トップ > 発表論文

発表論文

原著論文

2017

Fluctuational parameters based on the Bhatia-Thornton theory for supercritical solutions: Application to a supercritical aqueous solution of n-pentane

S. Shibuta, H. Imamura, K. Nishikawa, T. Morita

Chem. Phys., 487, 30-36, 2017.

2016

Interaction Potential between Biological Sensing Nanoparticles Determined by Combining Small-Angle X-ray Scattering and Model-Potential-Free Liquid Theory

T. Morita, N. Uehara, K. Kuwahata, H. Imamura, T. Shimada, K. Ookubo, M. Fujita, and T. Sumi

J. Phys. Chem. C, 120, 25564-25571, 2016.

The effect of 2,2,2-trifluoroethanol on water studied by using third derivatives of Gibbs energy, G

H. Ohgi, H. Imamura, K. Yonenaga, T. Morita, K. Nishikawa, P. Westh, and Y. Koga

J. Mol. Liq., 224, 401-407, 2016.

Nitroxyl-Radical-Catalyzed Oxidative Coupling of Amides with Silylated Nucleophiles through N-Halogenation

K. Moriyama, M. Kuramochi, K. Fujii, T. Morita, H. Togo

Angew. Chem. Int. Ed., 55, 14546-14551, 2016.

NMR Study on Ion Dynamics and Phase Behavior of a Piperidinium-Based Room-Temperature Ionic Liquid: 1-Butyl-1-methylpiperidinium Bis(fluorosulfonyl)amide

Y. Shimizu, Y. Wachi, K. Fujii, M. Imanari, K. Nishikawa

J.Phys. Chem. B, 120, 5710 - 5719, 2016.

Comprehensive Conformational and Rotational Analyses of the Butyl Group in Cyclic Cations: DFT Calculations for Imidazolium, Pyridinium, Pyrrolidinium, and Piperidinium

T. Endo, S. Hoshino, Y. Shimizu, K. Fujii, K. Nishikawa

J. Phys. Chem. B, 120, 10336 - 10349, 2016.

Anion and Cation Effects on the Size Control of Au Nanoparticles Prepared by Sputter Deposition in Imidazolium-based Ionic Liquids.

Y. Hatakeyama, K. Judai, K. Onishi, S. Takahashi, S. Kimura and K. Nishikawa

Phys. Chem. Chem. Phys., 18, 2339-2349 2016.

Large-area Silica Aerogel for Use as Cherenkov Radiators with High Refractive Index, Developed by Supercritical Carbon Dioxide Drying.

M. Tabata, I. Adachi, Y. Hatakeyama, H. Kawai, T. Morita and T. Sumiyoshi

J. Super. Fluid, 110, 183-192, 2016.

Temperature-independent Formation of Au Nanoparticles in Ionic Liquids by Arc Plasma Deposition

Y. Hatakeyama, S. Kimura, T. Kameyama, Y. Agawa, H. Tanaka, K. Judai, Torimoto and K. Nishikawa

Chem. Phys. Lett., 658, 188-191, 2016

2015

Asphaltene Aggregation Behavior in Bromobenzene Determined By Small-angle X-ray Scattering.

M. Morimoto, H. Imamura, S. Shibuta, T. Morita, K. Nishikawa, H. Yamamoto, R. Tanaka and T. Takanohashi

Energy Fuels, 29, 5737-5743, 2015.

Phase Behavior of a Piperidinium-Based Room-Temperature Ionic Liquid Exhibiting Scanning Rate Dependence.

Y. Shimizu, K. Fujii, M. Imanari, and K. Nishikawa

J. Phys. Chem. B, 119, 12552-12560, 2015.

Structure and Dynamics of Room Temperature Ionic Liquids with Bromide Anion: Results from 81Br NMR Spectroscopy.

T. Endo, M. Imanari, Y. Hidaka, H. Seki, K. Nishikawa and S. Sen

Mag. Res. Chem., 53, 369-378, 2015.

Anion and Cation Dynamics of Sulfonylamide-Based Ionic Liquids and the Solid-Liquid Transitions.

M. Imanari, K. Fujii, T. Mukai, N. Mizushima, H. Seki and K. Nishikawa

Phys. Chem. Chem. Phys., 17, 8750-8757, 2015.

Effects of Constituent Ions of a Phosphonium-based Ionic Liquid on Molecular Organization of H2O as Probed by 1-propanol: Tetrabutylphosphonium and Trifluoroacetate Ions.

T. Morita, K. Miki, A. Nitta, H. Ohgi, and P. Westh

Phys. Chem. Chem. Phys., 17, 22170-22178, 2015.

Absorption- and Pressure-Induced Structural Transition Exhibiting V-shaped Density Change in Imidazolium-based Ionic Liquid + CO2 System.

S. Okumura, M. Ushio, A. Oishi, K. Nishikawa, and T. Morita

Chem. Lett., 44, 937-939, 2015.

Density Fluctuations in Aqueous Solution of Ionic Liquid with Lower Critical Solution Temperature: Mixture of Tetrabutylphosphonium Trifluoroacetate and Water.

A. Nitta, T. Morita, S. Saita, Y. Kohno, H. Ohno and K. Nishikawa

Chem. Phys. Lett., 628, 108-112, 2015.

2014

How Much Weaker Are the Effects of Cations than Those of Anions? The Effects of K+ and Cs+ on the Molecular Organization of Liquid H2O.

T. Morita, P. Westh, K. Nishikawa, and Y. Koga

J. Phys. Chem. B, 118, 8744-8749, 2014.

Microscopic Structure of Naked Au Nanoparticles Synthesized in Typical Ionic Liquids by Sputter Deposition.

Y. Hatakeyama, K. Asakura, S. Takahashi, K. Judai, and K. Nishikawa

J. Phys. Chem. C, 118, 27973-27980, 2014.

Model-potential-free analysis of small angle scattering of proteins in solution: insights into solvent effects on protein-protein interaction.

T. Sumi, H. Imamura, T. Morita, Y. Isogai, and K. Nishikawa

Phys. Chem. Chem. Phys., 16, 25492-25497, 2014.

Characterization of BF4- in terms of its effect on water by the 1-propanol probing methodology.

T. Morita, A. Nitta, K. Nishikawa, P. Westh, and Y. Koga

J. Mol. Liq., 198, 211-214, 2014.

A model-free method for extracting interaction potential between protein molecules using small-angle X-ray scattering.

T. Sumi, H. Imamura, T. Morita, K. Nishikawa

J. Mol. Liq., 200, 42-46, 2014.

K-Edge X-ray Absorption Fine Structure Analysis of Pt/Au Core-Shell Electrocatalyst: Evidence for Short Pt-Pt Distance.

T. Kaito, H. Mitsumoto, S. Sugawara, K. Shinohara, H. Uehara, H. Ariga, S. Takakusagi, Y. Hatakeyama, K. Nishikawa, and K. Asakura

J. Phys. Chem. C, (in press)

Effect of Adding a Thiol Stabilizer on Synthesis of Au Nanoparticles by Sputter Deposition onto Polyethylene Glycol.

Y. Hatakeyama, J. Kato, T. Mukai, K. Judai, and K. Nishikawa

Bull. Chem. Soc. Jpn., 87, 773-779, 2014.

Crystal structure of 1,3-dimethylimidazolium bis(fluorosulfonyl)amide: unexpectedly high melting point arising from polydentate hydrogen bonding.

Kozo Fujii, Tomohiro Mukai, and Keiko Nishikawa

Chem. Lett., 43, 405-407, 2014.

Fast Cation Dynamics in the Crystalline State of an Imidazolium-Based Room Temperature Ionic Liquid due to the Presence of a Tiny Amount of H2O.

Takatsugu Endo, Mamoru Imanari, Hiroko Seki, Sabyasachi Sen, and Keiko Nishikawa

Solid State Ionics, 259, 41-45, 2014.

2013

Specific Asphaltene Aggregation in Toluene at Arouond 50 mg/L.

M. Morimoto, T. Morita, T. Takanohoshi, and K. Nishikawa

J. Jpn. Petrol. Inst., 56, 58-59, 2013.

Determination of missing crystal structures in the 1-alkyl-3-methylimidazolium hexafluorophosphate series: implications on structure-property relationships.

Takatsugu Endo, Hyuma Masu, Kozo Fujii, Takeshi Morita, Hiroko Seki, Sabyasachi Sen, and Keiko Nishikawa

Cryst. Growth and Design, 13, 5383-5390, 2013.

Modulation of the intermolecular interaction of myoglobin by removal of the heme.

Hiroshi Imamura, Takeshi Morita, Tomonari Sumi, Yasuhiro Isogai, Minoru Kato, and Keiko Nishikawa

J. Synchrotron Rad., 20, 919-922, 2013.

4,5-Dihaloimidazolium-based ionic liquids: Effects of halogen-bonding on crystal structures and ionic conductivity.

Tomohiro Mukai, and Keiko Nishikawa

RSC Advances, 3, 19952-19955, 2013.

Visible photoluminescence of gold nanoparticles prepared by sputter deposition technique in a room-temperature ionic liquid.

Toshifumi Iimori, Yoshikiyo Hatakeyama, Keiko Nishikawa, Masako Kato, Nobuhiro Ohta

Chem. Phys. Lett., 586, 79-82, 2013.

Thermal phase behavior of 1-butyl-3-methylimidazolium hexafluorophosphate: Simultaneous measurements of the melting of two polymorphic crystals by Raman spectroscopy and calorimetry.

Takatsugu Endo, and Keiko Nishikawa

Chem. Phys. Lett., 584, 100-103, 2013.

Fusion Growth of Gold Nanoparticles Induced by the Conformational Change of a Thermoresponsive Polymer Studied by Distance Distribution Functions.

Takeshi Morita, Kenta Kurihara, Osamu Yoshida, Hiroshi Imamura, Yoshikiyo Hatakeyama, Keiko Nishikawa, and Nobuo Uehara

J. Phys. Chem. C, 117, 13602-13608, 2013.

Crystal Structure of 1-Methy-2,4,5-Triiodolimidazole: Formation of Triangular Trimmer through Halogen Bonding.

Tomohiro Mukai, and Keiko Nishikawa

X-ray Structure Analysis online, 29, 13-14, 2013.

Effects of Tetramethyl- and Tetraethyl-Ammonium Chloride on H2O: Calorimetric and Near Infrared Spectroscopic Study.

Yoshikata Koga, Fumie Sebe, and Keiko Nishikawa

J. Phys. Chem. B, 117, 877-883, 2013.

A comparative study of the rotational dynamics of PF6? anions in the crystals and liquid states of 1-butyl-3-methylimidazolium hexafluorophosphate : Results from 31P NMR spectroscopy.

Takatsugu Endo, Hiroki Murata, Mamoru Imanari, Noriko Mizhisima, Hiroko Seki, Sabyasachi Sen, and Keiko Nishikawa

J. Phys. Chem. B, 117, 326-332, 2013.

X-ray radiographic technique for measuring density uniformity of silica aerogel.

M. Tabata, Y. Hatakeyama, I. Adachi, T. Morita and K. Nishikawa

Nuclear Inst. and Methods in Physics Research A, 697 52-58, 2013.

2012

Optical and radiographical characterization of silica aerogel for Cherenkov radiator.

M. Tabata, I. Adachi, Y. Hatakeyama, H. Kawai, T. Morita, and K. Nishikawa

IEEE Transactions Nuclear Science 59, 2506-2511, 2012.

Transglycosylated rutin induced non-surface active nanostructure for absorption enhancement of flurbiprofen.

Y. Tozuka, K. Higashi, T. Morita, K. Nishikawa, H. Uchiyama, J. Zhang, K. Moribe, H. Takeuchi, and K. Yamamoto

European Journal of Pharmaceutics and Biopharmaceutics 82, 120-126, 2012.

Linker-length dependence of the reorientational dynamics and viscosity of bis(imidazolium)-based ionic liquids incorporating bis(trifluoromethanesulfonyl)amide anions.

Toshihiko Mandai, Mamoru Imanari, Keiko Nishikawa

Chem. Phys. Lett., 543, 72-75, 2012.

Small-angle X-ray scattering study on the fluctuations of supercritical aqueous solution of n-pentane along the critical isotherm of water.

Takeshi Morita, Hiromi Murai, Syunsuke Kase, Keiko Nishikawa

Chem. Phys. Lett., 543, 68-71, 2012.

Small-angle X-ray Scattering Measurements of Ionic Liquids pressurized with Carbon Dioxide Using High-Pressure Titanium Sample Holder: 1-Butyl-3-methylimidazolium.

Takeshi Morita, Masayoshi Ushio, Kaori Kanoh, Eiichi Tanaka, and Keiko Nishikawa

Jpn. J. Appl. Phys., 51, 076703-1~6, 2012.

Effects of ethanol and dimethylsufoxide on the molecular organization of H2O as probed by 1-propanol.

Takeshi Morita, Peter Westh, Keiko Nishikawa, Yoshikata Koga

J. Phys. Chem. B, 116, 7328-7333, 2012.

Linker-Length Dependence of Crystal Structures and Thermal Properties of Bis-imidazolium Salts.

Toshihiko Mandai, Hyuma Masu, Hiroko Seki, and Keiko Nishikawa

Bull. Chem. Soc. Jpn., 85, 599-605, 2012.

Dynamical scaling analysis using the Lillie Number for vitrification of deeply supercooled glycerol.

Kalyan Sou, Keiko Nishikawa, Yoshikata Koga, Ken-ichi Tozaki

J. Non-Crystalline Solids, 358, 1313-1318, 2012.

Ultraslow Dynamics at Crystallization of a Room-Temperature Ionic Liquid, 1-Butyl-3-methylimidazolium Bromide.

Mamoru Imanari, Kozo Fujii, Takatsugu Endo, Hiroko Seki, Ken-ichi Tozaki, Keiko Nishikawa

J. Phys. Chem. B, 116, 3991-3997, 2012.

NMR Study of Cation Dynamics in Three Crystalline States of 1-Butyl-3-Methylimidazolium Hexafluorophosphate Exhibiting Crystal Polymorphism.

Takatsugu Endo, Hiroki Murata, Mamoru Imanari, Noriko Mizushima, Hiroko Seki, Keiko Nishikawa

J. Phys. Chem. B, 116, 3780-3788, 2012.

Spectrum of Excess Partial Molar Absorptivity. II: An NIR Study of Aqueous Na-Halides.

Fumie Sebe, Keiko Nishikawa, and Yoshikata Koga

Phys. Chem. Chem. Phys., 14, 4433-4439, 2012.

Effects of Cyclic-Hydrocarbon Substituents and Linker Length on Physicochemical Properties and Reorientational Dynamics of Imidazolium-Based Ionic Liquids.

Toshihiko Mandai, Akiko Matsumura, Mamoru Imanari, and Keiko Nishikawa

J. Phys. Chem. B, 116, 2090-2095, 2012.

Comparison between Cycloalkyl- and n-Alkyl-Substituted Imidazolium-Based Ionic Liquids in Physicochemical Properties, Reorientational Dynamics.

Toshihiko Mandai, Hyuma Masu, Mamoru Imanari, and Keiko Nishikawa

J. Phys. Chem. B, 116, 2059-2064, 2012.

Cation and anion dynamics in supercooled and glassy states of the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate: Results from 13C, 31P, and 19F NMR spectroscopy.

Takatsugu Endo, Scarlett Widgeon, Ping Yu, Sabyasachi Sen, Keiko Nishikawa

Phys. Rev. B, 85, 054307, 2012.

2011

Effects of Sputtering Conditions on Formation of Gold Nanoparticles in Sputter Deposition Technique.

Yoshikiyo Hatakeyama, Kei Onishi, Keiko Nishikawa

RSC Adv., 1, 1815-1821, 2011.

Crystal polymorphism of a room-temperature ionic liquid, 1,3-dimethylimidazolium hexafluorophosphate: Calorimetric and structural studies of two crystal phases having melting points of ~50 K difference.

Takatsugu Endo, Takeshi Morita and Keiko Nishikawa

Chem. Phys. Lett., 517, 162-165, 2011.

Is a Methyl Group always Hydrophobic? : Hydrophilicity of Trimethylamine-N-oxide, Tetramethyl Urea and Tetramethylammonium Ion.

Yoshikata Koga, Peter Westh, Keiko Nishikawa, S. Subramanian

J. Phys. Chem. B, 115, 2995-3002, 2011.

High-Resolution Calorimetry on Thermal behavior of Glycerol (1): Glass transition, crystallization and Melting, and Discovery of a Solid-Solid transition.

Kalyan Sou, Keiko Nishikawa, Yoshikata Koga, Ken-ichi Tozaki

Chem. Phys. Lett., 506, 217-220, 2011.

Correlation between Hydrocarbon Flexibility and Physicochemical Properties for Cyclohexyl-imidazolium Based Ionic Liquids Studied by 1H and 13C NMR.

Toshihiko Mandai, Mamoru Imanari, Keiko Nishikawa

Chem. Phys. Lett., 507, 100-104, 2011.

Effects of Methylation at Position 2 of Cation Ring on Rotational Dynamics of Imidazolium-based Ionic Liquids Investigated by NMR Spectroscopy: [C4mim]Br vs [C4C1mim]Br.

Takatsugu Endo, Mamoru Imanari, Hiroko Seki, Keiko Nishikawa

J. Phys. Chem. A, 115, 2999-3005, 2011.

Synthesis of Gold Nanoparticles in Liquid Polyethylene Glycol by Sputter Deposition and Temperature Effects on their Size and Shape.

Yoshikiyo Hatakeyama, Takeshi Morita, Satoshi Takahashi, Kei Onishi, Keiko Nishikawa

J. Phys. Chem. C, 115, 3279-3285, 2011.

2010

Effects of Methylation at the 2 Position of the Cation Ring on Phase Behaviors and Conformational Structures of Imidazolium-Based Ionic Liquids.

Takatsugu Endo, Tatsuya Kato, Keiko Nishikawa

J. Phys. Chem. B, 114, 9201-9208, 2010.

Can Temperature Control the Size of Au Nanoparticles Prepared in Ionic Liquids by Sputter Deposition Technique?

Yoshikiyo Hatakeyama, Satoshi Takahashi, Keiko Nishikawa

J. Phys. Chem. C, 114, 11098-11102, 2010.

Halogen Bonding and Hydrogen Bonding in 4,5-Diiodo-3-methyl-1-propylimidazolium Hexafluorophosphate.

Tomohiro Mukai, Keiko Nishikawa

X-ray Structure Analysis Online, 26, 39-40, 2010.

Zigzag sheet crystal packing in a halogen-bonding imidazolium salt: 1-butyl-4,5-dibromo-3-methylimidazolium iodide.

Tomohiro Mukai, Keiko Nishikawa

X-ray Structure Analysis Online, 26, 31-32, 2010.

Syntheses and crystal structures of two ionic liquids having halogen-bonding groups: 4,5-Dibromo- and 4,5-diiodo-1-butyl- -3-methylimidazolium trifluoromethanesulfonates.

Tomohiro Mukai, Keiko Nishikawa

Solid State Sciences, 12, 783-788, 2010.

NMR study on relationships between reorientational dynamics and phase behaviour of room-temperature ionic liquids: 1-alkyl-3-methylimidazolium cations.

Mamoru Imanari, Kei-ichi Uchida, Kozue Miyano, Hiroko Seki, Keiko Nishikawa

Phys. Chem. Chem. Phys., 12, 2959-2967, 2010. (Cover Article of No.12 Vol. 12)

Aspect-Ratio Dependence on Formation Process of Gold Nanorods Studied by Time-Resolved Distance Distribution Functions.

Takeshi Morita, Eiichi Tanaka, Yukihiro Inagaki, Hiroyasu Hotta, Rie Shingai, Yoshikiyo Hatakeyama, Keiko Nishikawa, Hiromi Murai, Hirofumi Nakano, Kazuyuki Hino

J. Phys. Chem. C, 114, 3804-3810, 2010.

Phase Behaviors of Room Temperature Ionic Liquid Linked with Cation Conformational Changes:1-Butyl-3-methylimidazolium Hexafluorophosphate.

Takatsugu Endo, Tatsuya Kato, Ken-ichi Tozaki, Keiko Nishikawa

J. Phys. Chem. B, 114, 407-411, 2010.

和文

微分的熱力学に基づくイオン液体イオンの疎水性/親水性

二田郁子、森田剛

熱測定 Vol. 42, 90 (2015)

変わりものどうしを混ぜる―イオン液体と水の混合状態を利用した新しい反応場

森田剛

化学4月号(化学同人) Vol. 68 68-69 (2013)

イオン液体のユニークな熱物性

西川恵子

真空 Vol. 56, No. 2, 47-53 (2013)

真空下でも使える『イオン液体』の概説

西川恵子

真空 Vol. 56, No. 2, 43-46 (2013)

イオン液体の科学 -新世代液体への挑戦-

西川惠子、大内幸雄、伊藤敏幸、渡邉正義、大野弘幸 編著

丸善 (2012)

ポリエチレングリコールへのスパッタ法適用による金ナノ粒子調整

畠山義清、加藤淳一、大西慧、西川恵子

ケミカルエンジニアリング 57, 530-537 (2012)

ゆらぎで観た溶液科学

西川恵子、森田剛

Molecular Science 6, A0054-1~9 (2012)

スパッタ注入法によるポリエチレングリコール中への 金ナノ粒子調製: 調製温度と添加物効果

畠山義清、加藤淳一、大西慧、西川恵子

ナノ学会会報第10巻第1号 (2011年10月)

イミダゾリウム系イオン液体の相転移挙動

遠藤太佳嗣、西川恵子

化学工学 第75巻第6号 (2011)

イオン液体研究の到達点と課題そして展望

西川恵子

現代化学 9月号 pp.18-20 (2010)

イオン液体はなぜ結晶化しにくいのか −相転移を司る超低速ダイナミクスに迫る−

今成司、関宏子、西川恵子

現代化学 9月号 pp.30-33 (2010)

熱物性からみたイオン液体 -特異な凝固・融解過程-

西川恵子、遠藤太佳嗣、東崎健一

熱測定 2009,Vol. 36 (2) 98-104

熱現象からみたイオン液体 -凝固・融解時の特異な熱挙動-

西川恵子

溶融塩および高温化学 2008,Vol. 51 No3. 298-303.

小角X線散乱法によるポリマーブレンド繊維の炭素化過程における細孔形成と構造評価

福山勝也、畠山義清、星野達朗、大谷朝男、西川恵子

炭素 2008,No.231, 21-29.(炭素材料学会論文賞)

小角X線散乱法による炭素材料の細孔構造解析

畠山義清、福山勝也、西川恵子

『炭素材料の新展開』p161-172  日本学術振興会炭素材料117委員会編 (2007)

熱物性からみたイオン液体

西川恵子

現代化学 3月号 pp.21-27 (2007)

特殊条件下の液体や溶液のゆらぎ

森田剛、田中良忠、西川恵子

放射光学会誌 Vol.19 No.6 402-407 (2006)

ゆらぎが超臨界流体の性質を決める

新井(鮎澤)亜沙子、森田剛、西川恵子

高温高圧流体研究会Letter Vol.19 (2005).

小角散乱実験から得られる超臨界流体の描像

新井(鮎澤)亜沙子、西川恵子

Photon Factory News Vol. 22 No. 2 (2004).

ゆらぎから見た超臨界流体

西川惠子、森田剛、齋藤健一

JASCO Report 「超臨界最新技術」特集第5号 pp. 65-70 (2002)

意外に多い小角散乱からの情報(6) -ゆらぎと小角散乱-

西川恵子

日本結晶学会誌 42, 339-345 (2000).

超臨界状態を見る

西川恵子

ペテロテック(石油学会機関誌)23, 317-320 (2000).

小角X線散乱による多孔質炭素材料の細孔構造の研究

西川恵子

炭素 No. 191, 71-76 (2000).

小角X線散乱法による超臨界流体のゆらぎ構造の研究

森田剛、西川恵子

日本結晶学会誌 41, 66-74 (1999).

臨界点近傍および超臨界流体に対し簡便で有効な熱伝導率測定法の開発

陳再華、東崎健一、西川恵子

高温高圧流体技術研究会レター Vol. 5 p.1-6 (1999).

2009

Comparison of Interionic/Intermolecular Vibrational Dynamics between Ionic Liquids and Concentrated Electrolyte Solutions.

Tomotsumi Fujisawa, Keiko Nishikawa, Hideaki Shirota

J. Chem. Phys., 131, 244519, 2009.

Polymorphic Properties of Ionic Liquid of 1-Isopropyl-3-methylimidazolium Bromide.

Masatoshi Kawahata, Takatsugu Endo, Hiroko Seki, Keiko Nishikawa, Kentaro Yamaguchi

Chem. Lett., 38, 1136-1137, 2009.

Ultrafast Dynamics in Aprotic Molecular Liquids: A Femtosecond Raman-Induced Kerr Effect Spectroscopic Study.

Hideki Shirota, Tomotsumi Fijisawa, Hiroki Fukazawa, Keiko Nishikawa

Bull. Chem. Soc. Jpn., 82, 1347-1366, 2009.

Hydrophobicity/Hydrophilicity of 1-Butyl-2,3-dimethyl and 1-Ethyl-3-methylimodazolium Ions: Towards Characterization of Room Temperature Ionic Liquids.

Hitoshi Kato, Kumiko Miki, Tomohiro Mukai, Keiko Nishikawa

J. Phys. Chem., 113, 14754-14760, 2009.

Thermodynamic Study on Phase Transitions of Poly(benzyl methacrylate) in Ionic Liquids Solvent.

Takeshi Ueki, Asako Ayusawa Arai, Koichi Kodama, Sayaka Kaino, Noriko Takada, Takeshi Morita, Keiko Nishikawa, Masayoshi Watanabe

Pure & Applied Chemistry, 81, 1829-1841, 2009.

Multiple Small-angle X-ray Scattering Analyses of the Structure of Gold Nanorod with Unique End Caps.

Takeshi Morita, Yoshikiyo Hatakeyama, Keiko Nishikawa, Eiichi Tanaka, Rie Shingai, Hiromi Murai, Hirofumi Nakano, Kazuyuki Hino

Chem. Phys., 364, 14-18, 2009.

Spectrum of Excess Partial Molar Absorptivity I. : Near Infrared Depectroscopic Study of Aqueous Acetonitrile and Acetone.

Yoshikata Koga, Fumie Sebe, Takamasa, Mimami, Keiko Otake, Ken-Ichi Saitow, Keiko Nishikawa

J. Phys. Chem. B, 113, 11928-11935, 2009.

Melting and Crystallization Behaviors of an Ionic Liquid, 1-Isopropyl-3-methylimidazolium Bromide, Studied by Using Nanowatt-Stabilized Differential Scanning Calorimetry.

Keiko Nishikawa, Shaolan Wang, Takatsugu Endo, Ken-ichi Tozaki

Bull. Chem. Soc. Jpn., 82, 806-812, 2009.

Atomic Mass Effects of [XF6]- ionic Liquids II. Theoretical Study.

Tateki Ishida, Keiko Nishikawa, Hideki Shirota

J. Phys. Chem. B, 113, 9840-9851, 2009.

Atomic Mass Effects of [XF6]- ionic Liquids I. Experimental Study.

Hideki Shirota, Keiko Nishikawa, Tateki Ishida

J. Phys. Chem. B, 113, 9831-9839, 2009.

Halogen-bonded and hydrogen-bonded network structures in crystals of 1-propyl- and 1-butyl-4,5-dibromo-3-methylimidazloium bromides.

Tomohiro Mukai, Keiko Nishikawa

Chem. Lett., 38, 402-403, 2009.

Interpretation of Correlation Length in Small-angle X-ray Scattering Experiments on fluids near critical point.

Hisashi Hayashi, Takeshi Morita, Keiko Nishikawa

Chem. Phys. Lett., 471, 249-252, 2009.

Small-Angle X-ray Scattering Study on Au Nanoparticles Dispersed in Ionic Liquids of 1-Alkyl-3-Methylimidazolium Tetrafluoroborate.

Yoshikiyo Hatakeyama, Maimi Okamoto, Tsukasa Torimoto, Susumu Kuwabata, Keiko Nishikawa

J. Phys. Chem. C, 113, 3917-3922, 2009.

Characterization of the molecular reorientational dynamics of the neat ionic liquid 1-butyl-3-methylimidazolium bromide in the super cooled state using 1H and 13C NMR spectroscopy.

Mamoru Imanari, Hiroyuki Tsuchiya, Hiroko Seki, Keiko Nishikawa, Mitsuru Tashiro

Mag. Res. Chem., 47, 67-70, 2009.

2008

Chemical Potentials in Aqueous Solutions of Some Ionic Liquids with 1-Ethyl-3-methylimidazolium Cation.

Hitoshi Kato, Keiko Nishikawa, Hiromi Murai, Takeshi Morita, Yoshikata Koga

J. Phys. Chem. B, 112, 13344-13348, 2008.

Intermittent crystallization of ionic liquid: 1-isopropyl-3-methylimidazolium bromide.

Keiko Nishikawa, Ken-ichi Tozaki

Chem. Phys. Lett., 463, 369-372, 2008.

Isomer Populations in Liquids for 1-Isopropyl-3-methylimidazolium Bromide and Its Iodide, and Their Conformational Changes Accompanying the Crystallizing and Melting Processes.

Takatsugu Endo, Keiko Nishikawa

J. Phys. Chem. A, 112, 7543-7550, 2008.

1H NMR Study on reorientational dynamics of an ionic liquid, 1-butyl-3-methylimidazolium bromide, accompanied with phase transitions.

M. Imanari, M. Nakakoshi, H. Seki, K. Nishikawa

Chem. Phys. Lett., 459, 89-93, 2008.

Self aggregation of 1-butyl-3-methylimidazolium bromide in aqueous solution.

H. Tsuchiya, M. Imanari, S. Ishihara, M. Nakakoshi, K. Nishikawa, H. Seki, M. Tashiro

Anal. Sci., 24, 1369-1371, 2008.

Conformational Analysis of 1-Butyl-3-methylimidazolium by CCSD(T) level Ab Initio Calculations: Effects of Neighboring Anions.

Seiji Tsuzuki, Asako Ayusawa Arai, Keiko Nishikawa

J. Phys. Chem. B, 112, 7739-7747, 2008.

Rhythmic Melting and Crystallizing of Ionic Liquid 1-Butyl-3-methylimidazolium Bromide.

Keiko Nishikawa, Shaolan Wang, Ken-ichi Tozaki

Chem. Phys. Lett., 458, 88-91, 2008.

Relative hydrophobicity and hydrophilicity of some “ionic liquid” anions determined by the 1-propanol probing methodology: A differential thermodynamic approach.

Hitoshi Kato, Keiko Nishikawa, Yoshikata Koga

J. Phys. Chem. B, 112, 2655-2660, 2008.

Development of an Apparatus for Simultaneous Measurements of Raman spectroscopy and High-Sensitive Calorimetry.

Takatsugu Endo, Ken-ichi Tozaki, Takashi Masaki, Keiko Nishikawa

Jpn. J. Appl. Phys., 47, 1175-1779, 2008.

Sample Holder for Small-Angle X-ray Scattering Measurements and Density Fluctuation of Supercritical Xenon.

Yoshitada Tanaka, Yoshihiro Takahashi, Takeshi Morita, Keiko Nishikawa

Jpn. J. Appl. Phys., 47, 334-336, 2008.

2007

Relative Hydrophobicity/Hydrophilicity of Fructose, Glucose, Sucrose and Trehalose as probed by 1-Propanol: A Differential Approach in Solution Thermodynamics.

Yoshikata Koga, Keiko Nishikawa, Peter Westh

J. Phys. Chem. B, 111, 13943-13948, 2007.

Crystal Structure of 2,3-Dimethyl-1-isopropylimidazolium Bromide.

T. Fujumoto, M. Kawahata, M. Nakakoshi, K. Yamaguchi, T. Machinami, H. Seki, K. Nishikawa, M. Tashiro

Anal. Sci., 23, 107-108, 2007.

Melting and freezing behaviors of prototype ionic liquids, 1-butyl-3-methylimidazolium bromide and its chloride, studied by using a nano-Watt differential scanning calorimeter.

K Nishikawa, S. Wang, H. Katayanagi, S. Hayashi, H. Hamaguchi, Y. Koga, K Tozaki

J. Phys. Chem. B, 111, 4894-4900, 2007.

Crystal Structure of 2,3-Dimethyl-1-propylimidazolium Bromide.

T. Fujumoto, M. Nakakoshi, T. Machinami, H. Seki, K. Nishikawa, M. Tashiro

Anal. Sci., 23, 9-10, 2007.

Apparatus for simultaneous measurement of X-ray absorption factor developed for small-angle X-ray scattering beam line.

T. Morita, Y. Tanaka, K. Ito, Y. Takahashi, K. Nishikawa

J. Appl. Cryst, 40, 791-795, 2007.

Investigation on structural fluctuation of supercritical cyclohexane by small-angle X-ray scattering.

A. A. Arai, T. Morita, K. Nishikawa

Fluid Phase Equilibria, 252, 114-118, 2007.

2006

Crystal Structure of 1-Butyl-3-methylimidazolium Iodide.

M. Nakakoshi, M. Shiro, T. Fujimoto, T. Machinami, H. Seki, M. Tashiro, K. Nishikawa

Chem. Lett., 35, 1400-1401, 2006.

Anomalous dynamic behavior of ions and water molecules in dilute aqueous solution of 1-butyl-3-methylimidazolium bromide studied by NMR.

M. Nakakoshi, S. Ishihara, H. Utsumi, H. Seki, Y. Koga, K. Nishikawa

Chem. Phys. Lett., 427, 87-90, 2006.

Br K-edge XAFS Analyses of IBr Residue Carbon Compounds.

H. Yoshikawa, K. Uno, N. Akuzawa, T. Konishi, T. Fujjikawa, K. Nishikawa

Carbon (submitted)

Development of polarized Raman spectrometer for supercritical fluids having high critical points.

K. Otake, M. Abe, K. Nishikawa, K. Saitow

Jpn. J. Appl. Phys., 45, 2801-2806, 2006.

Towards understanding the Hofmeister series (III): Effects of sodium halides on the molecular organization of H2O as probed by 1-propanol.

Peter Westh, Hitoshi Kato, Keiko Nishikawa, Yoshikata Koga.

J. Phys. Chem. A, 110, 2072-2078, 2006.

The effects of chloride salts of some cations on the molecular organization of H2O:Towards understanding the Hofmeister series (II).

Yoshikata Koga, Hideki Katayanagi, James V. Davies, Hitoshi Kato, Keiko Nishikawa, Peter Westh

Bull. Chem. Soc. Jpn., 79, 1347-1354, 2006.

Air oxidation of Carbon Spheres II Micropore Development.

M. Inagaki, T. Nishikawa, K. Oshida, K. Fukuyama, Y. Hatakeyama, K. Nishikawa

Adsorption Science and Technology, 24, 55-64, 2006.

Density Dependences of Long-range Fluctuations and Short-range Correlation Lengths of CHF3 and CH2F2 in Supercritical State.

T. Morita, Y. Takahashi, Y. Tanaka, A. A. Arai, K. Nishikawa

J. Chem. Phys., 124, 124549, 2006.

Novel method to measure heat capacity of supercritical fluids by using the Peltier elements.

Ken-ichi Tozaki, Yasutaka Kido, Yoshikata Koga, Keiko Nishikawa

Jpn J. Appl. Phys., 45, 269-273, 2006.

2005

Time Evolution of Density Fluctuation in Supercritical Region: Part 2. Comparison of Hydrogen- and Non-hydrogen- Bonded Fluids.

D. Kajiya, K. Nishikawa, K. Saitow

J. Phys. Chem. A, 109, 7365-7370, 2005.

Br K-edge XANES Analyses of Bromine Residue Carbon Compounds by Full Multiple Scattering Theory.

K. Uno, Y. Notoya, T. Fujikawa, H. Yoshikawa, K. Nishikawa.

Jpn. J. Appl. Phys., 44, 4073-4079, 2005.

Effect of an “ionic liquid” cation, 1-butyl-3-methylimidazolium, on the Molecular Organization of H2O.

K. Miki, P. Westh, K. Nishikawa, Y. Koga

J. Phys. Chem. B, 109, 9014-9019, 2005.

Volume-variable sample holder for small-angle X-ray scattering measurements of supercritical solutions and application to a CHF3-CO2 mixture.

T. Morita, T. Masakawa, A. A. Arai, M. Nakagawa, K. Nishikawa

Rev. Sci. Instrm., 76, 033902/1-033902/4, 2005.

Time Evolution of Density Fluctuation in Supercritical Region: Part I. Nonhydrogen Bonded Fluids Studied by Dynamic Light Scattering.

K. Saitow, D. Kajiya, K. Nishikawa

J. Phys. Chem. A, 109, 83-91, 2005.

Analysis to obtain precise density fluctuation of supercritical fluids by small-angle x-ray scattering.

A. A. Arai, T, Morita, K. Nishikawa

Chem. Phys., 310, 123-128, 2005.

2004

A novel detection method of Liquid-Liquid phase separation.

H. Kato, H. Katayanagi, Y. Koga, K. Nishikawa

Jpn. J. Appl. Phys., 43, 8217-8218, 2004.

Mesocellular Foam Carbons: Aggregates of Hollow Carbon Spheres with Open and Closed Wall Structures.

Y. Oda, K. Fukuyama, K. Nishikawa, S. Namba, H. Y., T. Tatsumi

Chem. Mater., 16, 3860-3866, 2004.

Mixing Schemes in Ionic Liquid– H2O Systems: A thermodynamic study.

H. Katayanagi, K. Nishikawa, H. Shimozaki, K. Miki, P. Westh, Y. Koga

J. Phys. Chem. B, 108, 19451-19457, 2004.

Towards Understanding the Hofmeister Series (1): The Effect of Sodium Salts of Some Anions on the Molecular Organization of H2O.

Y. Koga, P. Westh, J. V. Davies, K. Miki, K. Nishikawa, H. Katayanagi

J. Phys. Chem. A, 108, 8533-8541, 2004.

Attractive and Repulsive Intermolecular Interactions of a Polar Molecule: Short-range Structure of Neat Supercritical CHF3 Investigated by Raman Spectroscopy.

K. Saitow, H. Nakayama, K. Ishii, K. Nishikawa

J. Phys. Chem. A, 108, 5770-5784, 2004.

The Structure Study of Room-Temperature Ionic Liquid 1-n-butyl-3-methylimidazolium Iodide Utilizing Wide-Angle X-ray Scattering and Raman Spectroscopy.

H. Katayanagi, S. Hayashi, H. Hamaguchi, K. Nishikawa

Chem. Phys. Lett., 392, 460-464, 2004.

Fluctuations in Density and Concentration of Methanol-Water Mixtures at 7 MPa and 373, 423 K Studied by Small-Angle X-ray Scattering.

T. Morita, K. Nishikawa

Chem. Phys. Lett., 389, 29-33, 2004.

How are Hydrogen Bonds Perturbed in Aqueous NaCl04 Solution Depending on the Concentration?: A Near Infrared Study of Water.

K. Saitow, K. Kobayashi, K. Nishikawa

J. Sol. Chem., 33, 685-694, 2004.

Density Fluctuation of Supercritical Fluids Obtained from Small-angle X-ray Scattering Experiment and Thermodynamic Calculation.

K. Nishikawa, A. A. Arai, T. Morita

J. Supercritical Fluids, 30, 249-257, 2004.

“Icebergs” or No “Icebergs” in Aqueous Alcohols?: Composition-dependent Mixing Schemes.

Y. Koga, K. Nishikawa, P. Westh

J. Phys. Chem. A, 108, 3873-3877, 2004.

The Effects of Na2SO4 and NaClO4 on the Molecular Organization of H2O.

Y. Koga, P. Westh, K. Nishikawa

J. Phys. Chem. A, 108, 1635-1637, 2004.

Dynamics of Density Fluctuation of Supercritical Fluid Mapped on Phase Diagram.

K. Saitow, D. Kajiya, K. Nishikawa

J. Am. Chem. Soc., 126, 422-423, 2004.

2003

X-ray Absorption Fine Structure Study on Residue Bromine in Carbons with different Graphitization Degree.

H. Yoshikawa, K. Fukuyama, Y. Nakahara, T. Konishi, N. Ichikuni, Y. Yoshikawa, N. Akuzawa, Y. Takahashi, K. Nishikawa

Carbon, 41, 2931-2938, 2003.

Investigation on Structural Fluctuation of Supercritical Benzene by Small-angle X-ray Scattering.

A. A. Arai, T. Morita, K. Nishikawa

J. Chem. Phys., 119, 1502-1509, 2003.

Excess Partial Molar Entropy of Alkane-mono-ols in Aqueous Solutions at 25 oC.

Y. Koga, P. Westh, K. Nishikawa

Can. J. Chem., 81, 150-155, 2003.

Chemical Potential and Concentration Fluctuation in Some Aqueous Alkane-mono-ols at 25 oC.

J. Hu, C. A. Haynes, A. H. Y. Wu, C. M. W. Chang, M. G. M. Chen, E. G. M. Yee, T. Ichioka, K. Nishikawa, Y. Koga

Can. J. Chem., 81, 141-149, 2003.

Local Density Enhancement in neat Superrcritical Fluid due to Attractive Intermolecular Interactions.

K. Saitow, K. Otake, H. Nakayama, K. Ishii, K. Nishikawa

Chem. Phys. Lett., 368, 209-214, 2003.

Density Fluctuation of van der Waals Fluid at Supercritical State.

K. Nishikawa, K. Kusano, A. A. Arai, T. Morita

J. Chem. Phys., 118, 1341-1346, 2003.

Static Inhomogeneity of Supercritical Ethylene Studied by Small-Angle X-ray Scattering.

K. Nishikawa, H. Ochiai, K. Saitow, T. Morita

Chem. Phys., 286, 421-430, 2003.

2002

Pore Structure in Carbon Fibers Prepared from Polymer Blend.

K. Fukuyama, T. Hoshino, K. Nishikawa, A. Oya

Mol. Crys. Liq. Cryst., 388, 471-475, 2002.

Development of an Apparatus for High-Resolution Measurement of Permittivity for Fluids near the Critical Point and Detection of the Critical Anomaly on Supercritical Ethylene.

K. Tozaki, J. Kudo, Z. Chen, K. Nishikawa

Jpn. J. Appl. Phys., 41, 6455-6460, 2002.

Density-fluctuation-induced swelling of polymer thin films in carbon dioxide.

T. Koga, Y-S. Seo, Y. Zhang, K. Shin, K. Kusano, K. Nishikawa, M. H. Rafailovich, J. C. Sokolov, B. Chu. D. Peiffer, S. K. Satija

Phys. Rev. Lett., 89, 125506, 2002.

Correlation Time of Density Fluctuation for Supercritical Ethylene Studied by Dynamic Light Scattering.

K. Saitow, H. Ochiai, T. Kato, K. Nishikawa

J. Chem. Phys., 116, 4985-4992, 2002.

Inhomogeneity of Mixing in Acetonitrile Aqueous Solution Studied by Small-Angle X-ray Scattering.

K. Nishikawa , Y. Kasahara, T. Ichioka

J. Phys. Chem. B, 106, 693-700, 2002.

2001

Mixing Schemes of Aqueous Dimethyl Sulfoxide: A Support by X-ray Diffraction Data.

Y. Koga, Y. Kasahara, K. Yoshino, K. Nishikawa

J. Sol. Chem., 30, 885-893, 2001.

Titanium Sample Holder for Small-Angle X-ray Scattering Measurements of Supercritical Aqueous Solutions.

T. Morita, K. Kusano, K. Nishikawa, H. Miyagi, Y. Shimokawa, H. Matsuo

Rev. Sci. Instrm., 72, 3013-3018, 2001.

Terahertz Absorption Spectra of Supercritical CHF3 to Investigate Local Structure through Rotational and Hindered Rotational Motions.

K. Saitow, H. Ohtake, N. Sarukura, K. Nishikawa

Chem. Phys. Lett., 341, 86-92, 2001.

Construction of a Sample Cell of Poisonous Organic Solvents in Supercritical State for Small-Angle X-ray Scattering Measurements.

A. Ayusawa, K. Kusano, T. Morita, H. Miyagi, Y. Shimokawa, H. Matsuo, K. Nishikawa

Jpn. J. Appl. Phys., 40, 4260-4261, 2001.

Investigation of Pore Structure in Glass-like Carbon Prepared from Furan Resin.

K. Fukuyama, T. Nishizawa, K. Nishikawa

Carbon, 39, 2017-2021, 2001.

Effect of Hot Isostatic Pressing on Nanopore in Glass-like Carbon Prepared from Phenol Formaldehyde Resin.

K. Fukuyama, T. Nishizawa, K. Nishikawa

Carbon, 39, 1863-1867, 2001.

Small-angel X-ray Scattering Study on Pore Structure of Carbon Fiber Prepared from Polymer Blend of Phenolic Resin and Polystyrene.

K. Fukuyama, Y. Kasahara, N. Kasahara, A. Oya, K. Nishikawa

Carbon, 39, 287-290, 2001.

2000

Supercritical-Fluid Cell with Device of Variable Optical Path Length Giving Fringe-Free Terahertz Spectra.

K. Saitow, K. Nishikawa, H. Ohtake, N. Sarukura, H. Miyagi, Y. Shimokawa, H. Matsuo, K. Tominaga

Rev. Sci. Instrm., 71, 4061-4064, 2000.

A Thermodynamic Study of Aqueous Acetonitrile: Excess Chemical Potentials, Partial Molar Enthalpies, Entropies and Volumes, and Fluctuations.

P. V. Nikolova, S. J. B. Duff, P. Westh, C. A. Haynes, Y. Kasahara, K. Nishikawa, Y. Koga

Can. J. Chem., 78, 1553-1560, 2000.

Raman Spectral Changes of Neat CO2 across the Ridge of Density Fluctuation in Supercritical Region.

H. Nakayama, K. Saitow, M. Sakashita, K. Ishii, K. Nishikawa

Chem. Phys. Lett., 320, 323-327, 2000.

Study of Inhomogeneity of Supercritical Water by Small-angle X-ray Scattering.

T. Morita, K. Kusano, H. Ochiai, K. Saitow, K. Nishikawa

J. Chem. Phys., 112, 4203-4211, 2000.

Inhomogeneity of Molecular Distribution in Supercritical Fluids.

K. Nishikawa, T. Morita

Chem. Phys. Lett., 316, 238-242, 2000.

Construction of Small-angle X-ray Scattering Diffractometer by Use of Asymmetric-Cut Monochromator.

Y. Kasahara, K. Nishikawa

Jpn. J. Appl. Phys., 39, Part 1, 343-344, 2000.

Fractal Structural Change of Witbank Coal with Heat Treatment Studied by Small Angle X-ray Scattering.

T. Nakagawa, I. Komaki, M. Sakawa, K. Nishikawa

Fuel, 79, 1341-1346, 2000.

1999

Evaluation and Countermeasures of Convective Heat Transfer on Thermal Conductivity Measurement Using the Peltier Effect and Application to Supercritical CO2.

Z. Chen, K. Tozaki, K. Nishikawa

Jpn. J. Appl. Phys., 38, 6840-6845, 1999.

Pore-Width-Dependent Ordering of C2H5OH Molecules Contained in Graphitic Slit Nanopores.

T. Ohkubo, T. Iiyama, K. Nishikawa, T. Suzuiki, K. Kaneko

J. Phys. Chem. B, 103, 1859-1863, 1999.

Change of Surface Fractal Dimension for Witbank Coal with Heat Treatment Studied by Small Angle X-ray Scattering.

T. Nakagawa, K. Nishikawa, I. Komaki

Carbon, 37, 520-522, 1999.

Development of Thermal Conductivity Measurement for Fluids which is Convenient and Effective for Samples near the Critical Point.

Zai-hau Chen, K. Tozaki, K. Nishikawa

Jpn. J. Appl. Phys., 38, 91-94, 1999.

1998

Structure Change of Glass-like Carbon with Heat Treatment, Studied by Small-Angle X-ray Scattering: I Glass-like Carbon Prepared from Phenolic Resin.

K. Nishikawa, K. Fukuyama, T. Nishizawa

Jpn. J. Appl. Phys., 37, 6486-6491, 1998.

Construction of the Sample Holder and Small-Angle X-ray scattering Measurement for Supercritical Water.

T. Morita, H. Miyagi, Y Shimokawa, H. Matsuo, K. Nishikawa

Jpn. J. Appl. Phys., 37, 768-770, 1998.

Influence of Fine Particles on Carbon Deposition in the Coke Oven Chamber.

T. Nakagawa, T. Suzuki, A. Furusawa, Y. Maeno, I. Komaki, K. Nishikawa

Fuel, 77,1141-1146, 1998.

Fluid Behavior at Supercritical States Studied by Small-Angle X-Ray Scattering.

K. Nishikawa, T. Morita

J. Supercritical Fluids, 13, 143-148, 1998.

X-ray Scattering Study of the Structure of Silicon Oxides Grown on Silicon Substrates.

S. Yasuami, S. Sasaki, K. Nishikawa, T. Mori, M. Takahashi, H. Satake

J. Appl. Phys. (accepted)

1997

Study of the Structure of Water Molecular Assembly in a Hydrophobic Nanospace at Low Temperature with in situ X-ray Diffraction.

T. Iiyama, K. Nishikawa, T. Suzuki, K. Kaneko

Chem. Phys. Lett., 274, 152-158, 1997.

Structure Study of Supercritical CO2 near Higher-Order Phase Transition Line by X-ray Diffraction.

T. Morita, K. Nishikawa, M. Takematsu, H. Iida, S. Furutaka

J. Phys. Chem. B, 101, 7158-7162, 1997.

Reply to Comment on the Correlation Lengths and Density Fluctuations in Supercritical State of Carbon Dioxide.

K. Nishikawa

Chem. Phys. Lett., 271, 188, 1997.

Molecular Assembly Structure of CCl4 in Graphitic Nanospaces.

T. Iiyama, K. Nishikawa, T. Suzuiki, T. Otowa, M. Hijiriyama, Y. Nojima, K. Kaneko

J. Phys. Chem. B, 101, 3037, 1997.

Small-angle X-ray Scattering Study of Supercritical CF3H.

K. Nishikawa, T. Morita,

J. Phys. Chem. B, 101, 1413-1418, 1997.

1996

Small-angle X-ray Scattering Study of Supercritical Carbon Dioxide.

K. Nishikawa, I. Tanaka, Y. Amemiya,

J. Phys. Chem., 100, 418-421, 1996.

1995

Correlation Lengths and Density Fluctuations in Supercritical State of Carbon Dioxide.

K. Nishikawa, I. Tanaka

Chem. Phys. Lett., 244, 149-152, 1995.

An Ordered Water Molecular Assembly Structure in a Slit-shaped Carbon Nanospace.

T. Iiyama, K. Nishikawa, T. Otowa, K. Kaneko

J. Phys. Chem., 99, 10075, 1995.

An X-ray Diffraction Study of the Structure and Molecular Motion in Liquid CS2.

T. Iijima, K. Nishikawa

J. Mol. Struct., 352-353, 213, 1995.

1994

Anomalous X-ray Scattering from Aqueous 2-Butoxyethanol at XBE=0.06 near Freezing.

Y. Koga, K. Nishikawa, K. Yoshino, I. Tanaka, Y. Yu, Y. Amemiya

Chem. Phys. Lett., 228, 53, 1994.

X-ray Scattering Study of Carbon Dioxide at Supercritical States.

K. Nishikawa, M. Takematsu

Chem. Phys. Lett., 226, 359-363, 1994.

Structure Model of Liquid Water as Investigated by the Method of Reciprocal Space Expansion.

T. Iijima, K. Nishikawa

J. Chem. Phys., 101, 5017, 1994.

1993

Construction of Sample Holder for X-ray Diffraction Experiments on Supercritical Fluids.

K. Nishikawa, M. Takematsu

Jpn. J. Appl. Phys., 32, 5155-5158, 1993.

Small-Angle X-ray Scattering Study of Fluctuations in Ethanol and Water Mixtures.

K. Nishikawa, T. Iijima

J. Phys. Chem., 97, 10824, 1993.

1991

A Simulation Study of Small-Angle X-ray Scattering Behavior of Activated Carbon Fibers Adsorbing Water.

Y. Fujiwara, K. Nishikawa, T. Iijima, K. Kaneko

J. Chem. Soc. Faraday Trans., 87, 2763, 1991.

Accuracy of Intensity Measurement by Use of an Area Detector with a Photostimulable Phospher Screen, as Confirmed by Measureing Scattering Intensity from a Liquid.

K. Nishikawa, Y. Sakamoto, T. Iijima

Jpn. J. Appl. Phys., 30, 1303, 1991.

Surface Fractal Dimension of Microporous Carbon Fibers by Nitrogen Adsorption.

K. Kaneko, M. Sato, T. Suzuiki, Y. Fujiwara K. Nishikawa, M. Jaroniec

J. Chem. Soc. Faraday Trans., 87, 179, 1991.

1990

Small-Angle X-ray Scattering Study of Fluctuations in 1-Propanol-Water and 2-Propanol- Water Systems.

H. Hayashi, K. Nishikawa, T. Iijima

J. Phys. Chem., 94, 8334, 1990.

Structural Study of tert-Butyl Alcohol and Water Mixtures by X-ray Diffraction.

K. Nishikawa, T. Iijima

J. Phys. Chem., 94, 6227, 1990.

Easy Deduction of the Formula Relating the Fluctuations of a Binary System to the X-ray Scattering Intensity Extrapolated to s = 0.

H. Hayashi, K. Nishikawa, T. Iijima

J. Appl. Cryst., 23, 134, 1990.

1989

The Micropore Swelling of Activated Carbon Fibers with Water Adsorption Studied by Use of in situ Small-Angle X-ray Scattering.

K. Kaneko, Y. Fujiwara, K. Nishikawa

J. Colloid Interface Sci., 127, 298, 1989.

Construction of a Small-Angle X-ray Scattering Diffractometer for Study of Fluctuations in Solutions.

H. Hayashi, K. Nishikawa, T. Iijima

Jpn. J. Appl. Phys., 28, 1501, 1989.

Temperature Dependence of the Concentration Fluctuation, the Kirkwood-Buff Parameters and the Correlation Length of tert-Butyl Alcohol and Water Mixtures Studied by Small-Angle X-ray Scattering.

K. Nishikawa, H. Hayashi, T. Iijima

J. Phys. Chem., 93, 6559, 1989.

1988

X-ray Inelastic Scattering Intensity Measured by the Energy-Dispersive Diffractometry.

T. Iijima, K. Nishikawa

J. Appl. Cryst., 21, 943, 1988.

Structural Study of Liquid 1,1,1-Trichloroethane by X-ray Diffraction.

K. Nishikawa, T. iijima

Bull. Chem. Soc. Jpn., 61, 217, 1988.

1987

Binding and Correlation Effects in Nitrogen and Oxygen and the Correlation Effects in Neon, as Studied by Gas X-ray Diffraction.

K. Nishikawa, T. Iijima

J. Chem. Phys., 87, 3753, 1987.

Fluctuations in the Particle Number and Concetration and the Kirkwood-Buff Parameters of tert-Butyl Alcohol and Water Mixtures Studied by Small-Angle X-ray Scattering.

K. Nishikawa, Y. Kodera, T. Iijima

J. Phys. Chem., 91, 3694, 1987.

1986

Simple Relationship between the Kirkwood-Buff Parameters and the Fluctuations of the Particle Number and Concentration Obtained by Small-Angle X-ray Scattering.

K. Nishikawa

Chem. Phys. Lett., 132, 50, 1986.

Determination of Energy Spectrum of the Primary Beam in Energy-Dispersive Diffractometry.

K. Nishikawa, K. Ishizawa, K. Kodera, T. Iijima

Jpn. J. Appl. Phys., 25, 1431, 1986.

Structure Model for Liquid Neopentane.

K. Nishikawa

Bull. Chem. Soc. Jpn., 59, 2920, 1986.

Reciprocal Space Expansion in the Analysis of X-ray Scattering Intensities from Liquid CCl4.

K. Nishikawa, T. Iijima

Bull. Chem. Soc. Jpn., 59, 117, 1986.

1985

Use of Reciprocal Space Expansion in the Analysis of X-ray Scattering Intensities from Liquids.

T. Iijima, K. Nishikawa

Chem. Phys. Lett., 115, 522, 1985.

Mean Square Deviations of Interatomic Distances in Liquid Carbon Tetrachloride.

K. Nishikawa, T. Iijima

Bull. Chem. Soc Jpn., 58, 1220, 1985.

Structure Model for Liquid Carbon Tetrachloride.

K. Nishikawa, T. Iijima

Bull. Chem. Soc. Jpn., 58, 1215, 1985.

1984

Clathrate-like Structure of Water around Some Nonelectrolytes in Dilute Solution as Revealed by Computer Simulation and X-ray Diffraction Studies.

H. Tanaka, K. Nishikawa, K. Nakanishi

J. Inclusion Studies, 2, 119, 1984.

Correction for Intensity Data in Energy-Dispersive X-ray Diffractometry of Liquids. Application to Carbon Tetrachloride.

K. Nishikawa, T. Iijima

Bull. Chem. Soc. Jpn., 57, 1750, 1984.

1983

X-ray Diffraction Study of Mixing State in the Carbon Tetrachloride Solutions of Methanol and Pentane.

M. Tanaka, K. Nishikawa, K. Tohji, T. Fujiyama

Bull. Chem. Soc. Jpn., 56, 1273, 1983.

1981

The Intermolecular Arrangement in Plastic Crystal (Phase Ia) of Carbon Tetrachloride Studied by X-ray Diffraction.

K. Nishikawa, K. Tohji, Y. Murata

J. Chem. Phys., 74, 5817, 1981.

X-ray Diffraction Study of Liquid Methanol.

M. Tanaka, K. Nishikawa, T. Fujiyama

Chem. Lett., 327, 1981.

1980

X-ray Diffraction Study of Liquid Water.

K. Nishikawa, N. Kitagawa

Bull. Chem. Soc. Jpn., 53, 2804, 1980.

Direct Obsevation of Phase Transformation Process by Energy-Dispersive X-ray Diffractometry.

K. Tohji, K. Nishikawa, Y. Murata

Jpn. J. Appl. Phys., 19, L365, 1980.

1979

The Temperature Dependence of the Liquid Structure of CCl4.

K. Nishikawa, K. Tohji, M. Shima, Y. Murata

Chem. Phys. Lett., 64, 154, 1979.

Liquids Structure of CCl4 and Long-Range Correlation.

K. Nishikawa, Y. Murata

Bull. Chem. Soc. Jpn., 52, 293, 1979.

1978

The Construction of Energy-Dispersive X-ray Diffractometer for Liquids and Its application to CCl4.

Y. Murata, K. Nishikawa

Bull. Chem. Soc. Jpn., 51, 411, 1978.

1975

Structure of Polyvanadotungstates II. The Crystal Structure of K7V5W8O40・12H2O.

K. Nishikawa, A. Kobayashi, Y. Sasaki

Bull. Chem. Soc. Jpn., 48, 3152, 1975.

Structure of Polyvanadotungstates I. The Crystal Structure of α-(CN3H6)4V2W4O19.

K. Nishikawa, A. Kobayashi, Y. Sasaki

Bull. Chem. Soc. Jpn., 48, 889, 1975.

ページの先頭へ戻る

  • 講演予定
  • 主催シンポジウム
  • 主要装置
  • 発表論文
  • フォトアルバム