西 直哉 准教授 (Naoya NISHI, Ph.D., Associate Professor)

連絡先 (Address)

経歴 (Academic and Professional history)

所属学会 (Memberships)

アメリカ化学会、国際電気化学会、日本化学会、電気化学会、日本分析化学会、日本ポーラログラフ学会、日本中性子科学会、イオン液体研究会

American Chemical Society, International Society of Electrochemistry, The Chemical Society of Japan, The Electrochemical Society of Japan, The Japan Society for Analytical Chemistry, The Polarographic Society of Japan, The Japanese Society for Neutron Science, Ionic Liquid Research Association

研究内容 (Research)

イオン液体界面（気液、液液、固液）の電気化学、界面分光学、界面化学

Electrochemistry, interfacial spectroscopy, and interfacial chemistry at ionic liquid interfaces (A/L, L/L, S/L)

原著論文 (Original papers, * mark for the corresponding author)

1. • Koji Miyazato, Yuko Yokoyama, Tetsuo Sakka, Naoya Nishi,*
   • “Charge transfer across the ionic liquid/oil interface: facilitated ion transfer and electron transfer,”
   • J. Electroanal. Chem., in press.
2. • Naoya Nishi,* Hiromasa Baba, Takashi Yamazawa, Yuko Yokoyama, Tetsuo Sakka,
   • “Second harmonic generation as a probe of structure and dynamics of ionic liquids at the electrode interface,”
   • J. Electroanal. Chem., 950, 117905(1-6) (2023).
3. • Haru Kitaoka,* Naoya Nishi, Yuko Yokoyama, Tetsuo Sakka,*
   • “Distribution of Hydroxyl Groups Causes Anisotropic Molecular Clustering of Liquid Ethanol on Hydrophobic Surfaces: a Molecular Dynamics Study,”
   • J. Mol. Liq., 392 123488(1-9) (2023).
4. • Toshiaki Ogaki, Yuki Kitazumi, Naoya Nishi, Takashi Kakiuchi,*
   • “A new potentiometric method of determining the ionization constant of water based on the ionic liquid salt bridge consisting of N-ethyl-N-heptylpyrrolidinium bis(pentafluoroethanesulfonyl)amide,”
   • J. Electroanal. Chem., 949, 117858(1-4) (2023).
5. • Naohiro Yoshida, Yohei Kuroyama, Yuko Yokoyama, Tetsuo Sakka, Naoya Nishi,*
   • “Reductive deposition of aluminum at the water-free ionic liquid/oil interface,”
   • Electrochem. Commun., 156, 107575(1-4) (2023).
6. • Kazuhiro Akutsu-Suyama,* Misaki Ueda, Mitsuhiro Shibayama, Kosuke Ishii, Naoya Nishi,
   • “Effective Synthesis of Deuterated 1-Octylamine and Its Analogues,”
   • EPJ Web of Conferences, 286, 01004 (2023).
7. • Ken-ichi Amano,* Satoshi Furukawa, Yuto Kubo, Yuka Nakamura, Rina Ishii, Ayane Tanase, Masahiro Maebayashi, Tomohiro Hayashi, Naoya Nishi, Tetsuo Sakka
   • “Nonadditivities of the Particle Sizes Hidden in Model Pair Potentials and Their Effects on Physical Adsorptions,”
   • Langmuir, 37, 12999–13007 (2023).
8. • Nan Li, Naoya Nishi, Ronger Zheng, Yongqiu Zheng, Jinge Guan, Chenyang Xue, Tetsuo Sakka,*
   • “Fraunhofer-type absorption lines from a submerged Cu target by long-pulse laser-induced breakdown spectroscopy: toward non-gated detection,”
   • J. Anal. At. Spectrom., 38, 1908-1913 (2023).
9. • Weilun Gu, Naoya Nishi, Zongyu Hou, Zhe Wang,* Tetsuo Sakka,*
   • “Investigation of the signal uncertainty in laser-induced breakdown spectroscopy based on error propagation considering self-absorption,”
   • Spectrochim. Acta B, 206, 106732(1-11) (2023).
10. • Naoya Nishi,* Yohei Kuroyama, Naohiro Yoshida, Yuko Yokoyama, Tetsuo Sakka,
    • “A Water-free ITIES: ionic liquid/oil interface for base metal nanostructure formation – Zn case,”
    • ChemElectroChem, 10, e202201000 (2023).(selected as "Front Cover Article")
    Cover Profile article
11. • Shiwei Zhang, Takashi Yamazawa, Tetsuo Sakka, Naoya Nishi,*
    • “In-situ Electrochemical Surface Plasmon Resonance Study on Lithium Underpotential Deposition and Stripping in Bis(fluorosulfonyl)amide-based Ionic Liquids,”
    • J. Phys. Chem. C, 126, 9551-9558 (2022).
12. • Ippei Koya, Yuko Yokoyama, Tetsuo Sakka, Naoya Nishi,*
    • “Formation of Au nanofiber/fullerene nanowhisker 1D/1D composites via reductive deposition at the interface between an ionic liquid and water,”
    • Chem. Lett., 51, 643-645 (2022).
13. • Shiwei Zhang, Hiromasa Baba, Tetsuo Sakka, Naoya Nishi,*
    • “Interfacial Viscosity and Ionic Reorientation Probed Using Electrochemical Surface Plasmon Resonance at the Gold Electrode Interface of Ionic Liquids,”
    • J. Electroanal. Chem., 913, 116299(1-5) (2022).
14. • Shiwei Zhang, Tetsuo Sakka, Naoya Nishi,*
    • “Slow and Fast Dynamics at the Ionic Liquid/Gold Electrode Interface Separately Probed by Electrochemical Surface Plasmon Resonance Combined with Sequential Potential Pulse Techniques,”
    • J. Electrochem. Soc., 169, 066501(1-5) (2022).
15. • Haru Kitaoka,* Ken-ichi Amano, Naoya Nishi, Tetsuo Sakka,
    • "Improvement of the Nelder-Mead method using Direct Inversion in Iterative Subspace,"
    • Optim. Eng., 23, 1033–1055 (2022).
16. • Naoya Nishi,* Junya Uchiyashiki, Tatsuro Oda, Masahiro Hino, Norifumi L. Yamada,
    • “Overscreening Induced by Ionic Adsorption at the Ionic Liquid/Electrode Interface Detected Using Neutron Reflectometry with a Rational Material Design,”
    • Bull. Chem. Soc. Jpn., 94, 2914-2918 (2021).(selected as "Selected Paper")
    https://www.journal.csj.jp/doi/abs/10.1246/bcsj.20210328
17. • Kosuke Ishii, Tetsuo Sakka, Naoya Nishi,*
    • “Potential dependence of the ionic structure at the ionic liquid/water interface studied using MD simulation,”
    • Phys. Chem. Chem. Phys., 23, 22367-22374 (2021).(selected as "2021 Hot PCCP Article")
18. • Satoshi Yamaguchi, Naoya Nishi, Tetsuo Sakka*,
    • “Analysis of pulse-to-pulse fluctuation in underwater LIBS on the basis of error propagation calculation,”
    • Spectrochim. Acta B, 183, 106271(1-8) (2021).
19. • Ippei Koya, Tetsuo Sakka, Naoya Nishi,*
    • “Au nanofibers/CNT 1D/1D composites Formed via Redox Reaction at the lonic Liquid/Water Interface,”
    • Langmuir, 37, 9553-9559 (2021).
20. • Nan Li, Kota Tanabe, Naoya Nishi, Ronger Zheng, Tetsuo Sakka*,
    • “Simultaneous detection of a submerged Cu target and bulk water by long-pulse laser-induced breakdown spectroscopy,”
    • J. Anal. At. Spectrom., 36, 1960-1968 (2021).
21. • Naoya Nishi,* Kenta Ezawa, Tetsuo Sakka,
    • “In-situ surface roughness analysis of electrodeposited Co films in an ionic liquid using electrochemical surface plasmon resonance,”
    • J. Electrochem. Soc., 168, 072505(1-7) (2021).
22. • Shiwei Zhang, Naoya Nishi,* Seiji Katakura, Tetsuo Sakka,
    • “Evaluation of Static Differential Capacitance at the [C4mim+][TFSA−]/Electrode Interface Using Molecular Dynamics Simulation Combined with Electrochemical Surface Plasmon Resonance Measurements,”
    • Phys. Chem. Chem. Phys., 23, 13905-13917 (2021).
23. • Haru Kitaoka,* Kota Hashimoto, Naoya Nishi, Tetsuo Sakka,*
    • “Solid Surface Induced Anisotropic Clustering in Ethanol-Cyclohexane Binary Liquids Studied by Molecular Dynamics Simulations,”
    • Chem. Lett., 50, 1662-1666 (2021).
24. • 西　直哉,* 南　栄次，作花哲夫,
    • 「イオン液体|水界面における界面活性アニオンの吸着特性：イオン液体カチオン依存性」,
    • 分析化学, 70, 521-527 (2021).
25. • Kota Hashimoto,* Ken-ichi Amano, Naoya Nishi, Hiroshi Onishi, Tetsuo Sakka,
    • "Comparison of atomic force microscopy force curve and solvation structure studied by integral equation theory,"
    • J. Chem. Phys., 154, 164702(1-14) (2021).
26. • Nan Li, Naoya Nishi, Ronger Zheng, Tetsuo Sakka*,
    • "Signal enhancement in the underwater long-pulse laser-induced breakdown spectroscopy for the analysis of bulk water,"
    • J. Anal. At. Spectrom., 36, 1170-1179 (2021).
27. • Yohei Kuroyama, Naoya Nishi,* Tetsuo Sakka,
    • "Electrochemical liquid-liquid interface between oil and ionic liquid for reductive deposition of metal nanostructures,"
    • J. Electroanal. Chem., 881, 114959(1-6) (2021).
28. • Nan Li, Naoya Nishi, Ronger Zheng, Tetsuo Sakka*,
    • "Efficient detection of emission lines for H and O and the use as an internal standard for underwater LIBS,"
    • J. Anal. At. Spectrom., 36, 345–351 (2021).
29. • Kenta Ezawa, Naoya Nishi,* Tetsuo Sakka,
    • "In-situ electrochemical SPR study of gold surface smoothing by repetitive cathodic deposition and anodic dissolution of copper in an ionic liquid,"
    • J. Electroanal. Chem., 877, 114611(1–6) (2020).
30. • Naoya Nishi,* Takashi Yamazawa, Tetsuo Sakka, Hiroki Hotta, Kenjiro Hanaoka, Hiromi Takahashi,
    • "How Viscous Is the Solidlike Structure at the Interface of Ionic Liquids? A Study Using Total Internal Reflection Fluorescence Spectroscopy with a Fluorescent Molecular Probe Sensitive to High Viscosity,"
    • Langmuir, 36, 10397–10403 (2020).
31. • Yu Zhang, Naoya Nishi,* Ippei Koya, Tetsuo Sakka,
    • "Simultaneous Synthesis of One- and Two-dimensional Gold Nanostructures/Reduced Graphene Oxide Composites in the Redox-active Ionic Liquid/Water Interfacial System,"
    • Chem. Mater., 32, 6374–6383 (2020).
32. • Shiwei Zhang, Naoya Nishi,* Tetsuo Sakka,
    • "Electrochemical Surface Plasmon Resonance Measurements of Camel-shaped Static Capacitance and Slow Dynamics of Electric Double Layer Structure at the Ionic Liquid/Electrode Interface,"
    • J. Chem. Phys., 153, 044707(1–7) (2020).
33. • Seiji Katakura, Ken-ichi Amano, Tetsuo Sakka, Wei Bu, Binhua Lin, Mark Schlossman, Naoya Nishi,*
    • "Evolution and Reversible Polarity of Multilayering at the Ionic Liquid/Water Interface,"
    • J. Phys. Chem. B, 124, 6412–6419 (2020).
34. • Kota Hashimoto,* Ken-ichi Amano, Naoya Nishi, Tetsuo Sakka,
    • "Calculation method of number density distribution of liquid molecules or colloidal particles near substrate from surface force apparatus measurement,"
    • Chem. Phys. Lett., 754, 137666(1–5) (2020).
35. • Ken-ichi Amano,* Ryosuke Sawazumi, Hiroshi Imamura, Tomonari Sumi, Kota Hashimoto, Kazuhiro Fukami, Haru Kitaoka, Naoya Nishi, Tetsuo Sakka,
    • "An Improved Model-potential-free Analysis of the Structure Factor Obtained from a Small Angle scattering: Acquisitions of the Pair Correlation Function and the Pair Potential,"
    • Chem. Lett., 49, 1017–1021 (2020).
36. • Yu Zhang, Naoya Nishi,* Tetsuo Sakka,
    • "Interface-templated synthesis of single-crystalline silver chain-like nanobelts at the liquid-liquid interface between water and redox-active ionic liquid,"
    • Colloids Surf. A, 597, 124747(1–9) (2020).
37. • Seiji Katakura, Naoya Nishi,* Kazuya Kobayashi, Ken-ichi Amano, Tetsuo Sakka,
    • "Effect of switching the length of alkyl chains on electric double layer structure and differential capacitance at the electrode interface of quaternary ammonium-based ionic liquids studied using MD simulation,"
    • J. Phys. Chem. C, 124, 7873–7883 (2020).
38. • Seiji Katakura, Naoya Nishi,* Kazuya Kobayashi, Ken-ichi Amano, Tetsuo Sakka,
    • "An electric double layer structure and differential capacitance at the electrode interface of tributylmethylammonium bis(trifluoromethanesulfonyl)amide studied using a molecular dynamics simulation,"
    • Phys. Chem. Chem. Phys., 22, 5198–5210 (2020).
39. • Yu Zhang, Naoya Nishi,* Tetsuo Sakka,
    • "One-step fabrication of Au@Pd core-shell bimetallic nanofibers at the interface between water and redox-active ionic liquid,"
    • Electrochim. Acta, 325, 134919(1-9) (2019).
40. • Kota Hashimoto,* Ken-ichi Amano, Naoya Nishi, Tetsuo Sakka,
    • "Integral equation theory based method to determine number density distribution of colloidal particles near a substrate from colloidal probe atomic force microscopy,"
    • J. Mol. Liq., 294, 111584(1-8) (2019).
41. • Satoshi Furukawa, Ken-ichi Amano,* Taira Ishihara, Kota Hashimoto, Naoya Nishi, Hiroshi Onishi, Tetsuo Sakka,
    • "Enhancement of Stratification of Colloidal Particles near a Substrate Induced by Addition of non-adsorbing Polymers,"
    • Chem. Phys. Lett., 734, 136705(1-5) (2019).
42. • Yu Zhang, Naoya Nishi,* Tetsuo Sakka,
    • "Template-free and spontaneous formation of vertically aligned Pd nanofiber arrays at the liquid-liquid interface between redox-active ionic liquid and water,"
    • ACS Appl. Mater. Interfaces, 11, 23731–23740 (2019).
43. • Seiji Takagi, Naoya Nishi,* Tetsuo Sakka,
    • "Ionic Liquid-in-Water Emulsion-Templated Synthesis of Gold Nanoshells at the Liquid-Liquid Interface between Water and Primary Ammonium-based Ionic Liquids,"
    • Chem. Lett., 48, 589–592 (2019).
44. • Naoya Nishi,* Junya Uchiyashiki, Yoichi Ikeda, Seiji Katakura, Tatsuro Oda, Masahiro Hino, Norifumi L. Yamada,
    • "Potential-dependent structure of the ionic layer at the electrode interface of an ionic liquid probed using neutron reflectometry,"
    • J. Phys. Chem. C, 123, 9223−9230 (2019).
45. • Seiji Katakura, Naoya Nishi,* Kazuya Kobayashi, Ken-ichi Amano, Tetsuo Sakka,
    • "Surface Structure of Quaternary Ammonium-Based Ionic Liquids Studied Using Molecular Dynamics Simulation: Effect of Switching the Length of Alkyl Chains,"
    • J. Phys. Chem. C, 123, 7246-7258 (2019).(selected as "Supplementary Cover Art")
    
46. • Yu Zhang, Naoya Nishi,* Ken-ichi Amano, Tetsuo Sakka,
    • "One-dimensional Pt nanofibers formed by the redox reaction at the ionic liquid|water interface,"
    • Electrochim. Acta, 282, 886–891 (2018).
47. • Ken-ichi Amano,* Taira Ishihara, Kota Hashimoto, Naoyuki Ishida, Kazuhiro Fukami, Naoya Nishi, Tetsuo Sakka,
    • "Stratification of Colloidal Particles on a Surface: Study by a Colloidal Probe Atomic Force Microscopy Combined with a Transform Theory,"
    • J. Phys. Chem. B, 122, 4592–4599 (2018).
48. • Naoya Nishi,* Yoichi Ikeda, Tetsuo Sakka,
    • "Electrochemical surface plasmon resonance as a probe of redox reactions at the ionic liquid|gold interface,"
    • J. Electroanal. Chem., 817, 210–216 (2018).
49. • Ken-ichi Amano,* Tomohiko Hayashi, Kota Hashimoto, Naoya Nishi, Tetsuo Sakka,
    • "Potential of mean force between spherical particles in an ionic liquid and its decomposition into energetic and entropic components: An analysis using an integral equation theory,"
    • J. Mol. Liq., 257, 121–131 (2018).
50. • Naoya Nishi,* Ikumi Yajima, Ken-ichi Amano, Tetsuo Sakka,
    • "Janus-type gold/polythiophene composites formed via redox reaction at the ionic liquid|water interface,"
    • Langmuir, 34, 2441−2447 (2018).
51. • Naoya Nishi,* Yasuro Kojima, Seiji Katakura, Tetsuo Sakka,
    • "Static capacitance at the electrochemical liquid-liquid interface between ionic liquids and eutectic Ga-In alloy measured using the pendant drop method,"
    • Electrochemistry, 86, 38–41 (2018).
52. • Ken-ichi Amano,* Yasuyuki Yokota, Takashi Ichii, Norio Yoshida, Naoya Nishi, Seiji Katakura, Akihito Imanishi, Ken-ichi Fukui, Tetsuo Sakka,
    • "A Relationship between Force Curve Measured by Atomic Force Microscopy in Ionic Liquid and its Density Distribution on a Substrate,"
    • Phys. Chem. Chem. Phys., 19, 30504–30512 (2017).
53. • Kenta Motobayashi,* Yuki Inoue, Kazuya Minami, Naoya Nishi,* Tetsuo Sakka, Masatoshi Osawa,
    • "Potential-Induced Restructuring Dynamics of Ionic Liquids on a Gold Electrode: Steric Effect of Constituent Ions Studied by Surface-Enhanced Infrared Absorption Spectroscopy,"
    • J. Electroanal. Chem., 800, 126–133 (2017).
54. • Tetsuo Sakka,* Shinji Yamashita, Ken-ichi Amano, Naoya Nishi,
    • "Vibration of Water Sessile Drops in Various Oils,"
    • Chem. Lett., 46, 1337–1340 (2017).
55. • Kazuya Kobayashi,* Yunfeng Liang,* Sumihiko Murata,* Toshifumi Matsuoka, Satoru Takahashi, Ken-ichi Amano, Naoya Nishi, Tetsuo Sakka,
    • "Stability Evaluation of Cation Bridging on Muscovite Surface for Improved Description of Ion-Specific Wettability Alteration,"
    • J. Phys. Chem. C, 121, 9273–9281 (2017).
56. • Kazuya Kobayashi,* Yunfeng Liang,* Sumihiko Murata, Toshifumi Matsuoka, Satoru Takahashi, Ken-ichi Amano, Naoya Nishi, Tetsuo Sakka,
    • "Ion Distribution and Hydration Structure in the Stern Layer on Mica Surface,"
    • Langmuir, 33, 3892–3899 (2017).
57. • Naoya Nishi,* Shunsuke Yasui, Atsunori Hashimoto, Tetsuo Sakka,
    • "Anion dependence of camel-shape capacitance at the interface between mercury and ionic liquids studied using pendant drop method,"
    • J. Electroanal. Chem., 789, 108–113 (2017).
58. • Naoya Nishi,* Kazuya Minami, Kenta Motobayashi, Masatoshi Osawa, Tetsuo Sakka,
    • "Interfacial structure at the quaternary ammonium-based ionic liquids|gold electrode interface probed by surface enhanced infrared absorption spectroscopy: anion dependence of the cationic behavior,"
    • J. Phys. Chem. C, 121, 1658−1666 (2017).
59. • Ken-ichi Amano,* Mitsuhiro Iwaki, Kota Hashimoto, Kazuhiro Fukami, Naoya Nishi, Ohgi Takahashi, Tetsuo Sakka,
    • "Number Density Distribution of Small Particles around a Large Particle: Structural Analysis of a Colloidal Suspension,"
    • Langmuir, 32, 11063–11070 (2016).
60. • Ken-ichi Amano,* Yunfeng Liang, Keisuke Miyazawa, Kazuya Kobayashi, Kota Hashimoto, Kazuhiro Fukami, Naoya Nishi, Tetsuo Sakka, Hiroshi Onishi, Takeshi Fukuma,
    • "Number density distribution of solvent molecules on a substrate: A transform theory for atomic force microscopy,"
    • Phys. Chem. Chem. Phys., 18, 15534–15544 (2016).
61. • Kazuya Kobayashi, Yunfeng Liang,* Ken-ichi Amano, Sumihiko Murata,* Toshifumi Matsuoka, Satoru Takahashi, Naoya Nishi, Tetsuo Sakka,
    • "Molecular Dynamics Simulation of Atomic Force Microscopy at Water-Muscovite Interface: Hydration Layer Structure and AFM Force,"
    • Langmuir, 32, 3608–3616 (2016).
62. • Ayumu Matsumoto,* Ayaka Tamura, Atsushi Kawasaki, Takaya Honda, Peter Gregorčič, Naoya Nishi, Ken-ichi Amano, Kazuhiro Fukami, Tetsuo Sakka,*
    • "Comparison of the overall temporal behavior of the bubbles produced by short- and long-pulse nanosecond laser ablations in water using a laser-beam-transmission probe,"
    • App. Phys. A, 122, 234(1-6) (2016).
63. • 柿並達也，西　直哉,* 天野健一，作花哲夫、
    • 「イオン液体｜水界面における酸化還元反応を利用する金の樹枝状ナノファイバーの合成:粘度とナノ構造の相関の検討」：
    • 分析化学, 65, 157–161 (2016).
64. • Ayumu Matsumoto,* Ayaka Tamura, Ryo Koda, Kazuhiro Fukami, Yukio H. Ogata, Naoya Nishi, Blair Thornton, Tetsuo Sakka,*
    • "A calibration-free approach for on-site multi-element analysis of metal ions in aqueous solutions by electrodeposition-assisted underwater laser-induced breakdown spectroscopy,"
    • Spectrochim. Acta B, 118, 45–55 (2016).
65. • Naoya Nishi,* Tomoya Uruga, Hajime Tanida,
    • "Potential dependent structure of an ionic liquid at ionic liquid | water interface probed by x-ray reflectivity measurements,"
    • J. Electroanal. Chem., 759, 129 – 136 (2015).
66. • Ayumu Matsumoto,* Ayaka Tamura, Takaya Honda, Tsuyoshi Hirota, Kazuya Kobayashi, Seiji Katakura, Naoya Nishi, Ken-ichi Amano, Kazuhiro Fukami, Tetsuo Sakka,*
    • "Transfer of the Species Dissolved in a Liquid into Laser Ablation Plasma: An Approach using Emission Spectroscopy,"
    • J. Phys. Chem. C, 119, 26506 – 26511 (2015).
67. • Naoya Nishi,* Tatsuya Kakinami, Tetsuo Sakka,
    • "Dendritic nanofibers of gold formed by the electron transfer at the interface between water and highly hydrophobic ionic liquid,"
    • Chem. Commun., 51, 13638 – 13641 (2015).
68. • Ken-ichi Amano,* Eisuke Tanaka, Kazuya Kobayashi, Hiroshi Onishi, Naoya Nishi, Tetsuo Sakka,
    • "Force measurement reveals structure of a confined liquid: Observation of the impenetrable space,"
    • Surf. Sci., 641, 242 – 246 (2015).
69. • Kazuhiro Fukami,* Tomoko Urata, Katharina Krischer, Naoya Nishi, Tetsuo Sakka, Atsushi Kitada, Kuniaki Murase,
    • "Spontaneous Formation of Microgroove Arrays on the Surface of p-Type Porous Silicon Induced by a Turing Instability in Electrochemical Dissolution,"
    • ChemPhysChem, 16, 1613 – 1618 (2015).
70. • Ayaka Tamura,* Ayumu Matsumoto, Kazuhiro Fukami, Naoya Nishi, Tetsuo Sakka,*
    • "Simultaneous observation of nascent plasma and bubble induced by laser ablation in water with various pulse durations,"
    • J. Appl. Phys., 117, 173304 (2015).
71. • Naoya Nishi,* Atsunori Hashimoto, Eiji Minami, Tetsuo Sakka,
    • "Electrocapillarity and zero-frequency differential capacitance at the interface between mercury and ionic liquids measured using pendant drop method,"
    • Phys. Chem. Chem. Phys., 17, 5219 – 5226 (2015).
72. • Ayumu Matsumoto,* Ayaka Tamura, Ryo Koda, Kazuhiro Fukami, Yukio Ogata, Naoya Nishi, Blair Thornton, Tetsuo Sakka,*
    • "On-Site Quantitative Elemental Analysis of Metal Ions in Aqueous Solutions by Underwater Laser-Induced Breakdown Spectroscopy Combined with Electrodeposition under Controlled Potential,"
    • Anal. Chem., 87, 1655 – 1661 (2015).
73. • 片倉誠士，西　直哉,* 小林和弥，天野健一，作花哲夫、
    • 「分子動力学シミュレーションによる四級アンモニウム系イオン液体の表面構造の研究」：
    • 分析化学, 64, 219 – 224 (2015).
74. • Ayaka Tamura,* Ayumu Matsumoto, Takashi Nakajima, Kazuhiro Fukami, Yukio H. Ogata, Naoya Nishi, Tetsuo Sakka,*
    • "Effects of temporal laser profile on the emission spectra for underwater laser-induced breakdown spectroscopy: Study by short-interval double pulses with different pulse durations,"
    • J. Appl. Phys., 117, 023302 (2015).
75. • Naoya Nishi,* Junya Uchiyashiki, Ryo Oogami, Tetsuo Sakka,
    • "Ionic liquid structure at the electrified ionic liquid|Hg interface studied using in situ spectroscopic ellipsometry,"
    • Thin Solid Films, 571, 735-738 (2014).
76. • Ryo Koda, Akira Koyama, Kazuhiro Fukami,* Naoya Nishi, Tetsuo Sakka, Takeshi Abe, Atsushi Kitada, Kuniaki Murase, Masahiro Kinoshita,*
    • "Effect of cation species on surface-induced phase transition observed for platinum complex anions in platinum electrodeposition using nanoporous silicon"
    • J. Chem. Phys., 141, 074701 (2014).
77. • Tetsuo Sakka,* Daichi Kozawa, Kiyoto Tsuchiya, Nao Sugiman, Gisle Øye, Kazuhiro Fukami, Naoya Nishi, Yukio H. Ogata,
    • "Two-dimensional array of particles originating from dipole-dipole interaction as evidenced by potential curve measurements at vertical oil/water interfaces"
    • Phys. Chem. Chem. Phys., 16, 16976-16984 (2014).
78. • Tetsuo Sakka,* Ayaka Tamura, Ayumu Matsumoto, Kazuhiro Fukami, Naoya Nishi, Blair Thornton,
    • "Effects of pulse width on nascent laser-induced bubbles for underwater laser-induced breakdown spectroscopy"
    • Spectrochim. Acta B, 97, 94-98 (2014).
79. • Akira Koyama, Kazuhiro Fukami,* Takeshi Yamauchi, Naoya Nishi, Tetsuo Sakka, Atsushi Kitada, Kuniaki Murase,
    • "Lateral growth of polypyrrole electropolymerized along hydrophobic insulative substrates"
    • ECS Electrochem. Lett., 3, G5-G7 (2014).
80. • Kenta Motobayashi,* Kazuya Minami, Naoya Nishi, Tetsuo Sakka, Masatoshi Osawa,*
    • "Hysteresis of Potential-Dependent Changes in Ion Density and Structure of an Ionic Liquid on a Gold Electrode: In Situ Observation by Surface-Enhanced Infrared Absorption Spectroscopy,"
    • J. Phys. Chem. Lett., 4, 3110 – 3114 (2013)
81. • Naoya Nishi,* Yuta Hirano, Toshiyuki Motokawa and Takashi Kakiuchi,
    • "Ultraslow relaxation of the structure at the ionic liquid|gold electrode interface to a potential step probed by electrochemical surface plasmon resonance measurements: asymmetry of the relaxation time to the potential-step direction,"
    • Phys. Chem. Chem. Phys., 15, 11615 – 11619 (2013)
82. • Naoya Nishi,* Kohji Kasuya, and Takashi Kakiuchi,
    • "Surface structure of a hydrophobic ionic liquid probed by spectroscopic ellipsometry,"
    • J. Phys. Chem. C, 116, 5097 – 5102 (2012)
83. • Shimpei Makino, Yuki Kitazumi, Naoya Nishi, Takashi Kakiuchi,*
    • "Charging current probing of the slow relaxation of the ionic liquid double layer at the Pt electrode,"
    • Electrochem. Commun., 13, 1365 – 1368 (2011)
84. • Naoya Nishi,* Tomoya Uruga, Hajime Tanida, and Takashi Kakiuchi,
    • "Temperature Dependence of Multilayering at the Free Surface of Ionic Liquids Probed by X-ray Reflectivity Measurements,"
    • Langmuir, 27, 7531– 7536 (2011)
85. • Takuya Ohtani, Naoya Nishi, and Takashi Kakiuchi,*
    • "Differential pulse stripping voltammetry of moderately hydrophobic ions based on hydrophobic ionic liquid membranes supported on the Ag/AgCl electrode,"
    • J. Electroanal. Chem., 656, 102–105 (2011)
86. • Yukinori Yasui, Yuki Kitazumi, Naoya Nishi, and Takashi Kakiuchi,*
    • "A comparison of the ultraslow relaxation processes at the ionic liquid-water interface for three hydrophobic ionic liquids,"
    • Electrochem. Commun., 12, 1479–1482 (2010)
87. • Yukinori Yasui, Yuki Kitazumi, Naoya Nishi, and Takashi Kakiuchi,*
    • "Electrocapillarity under Ultraslow Relaxation of the Ionic Liquid Double Layer at the Interface between Trioctylmethylammonium Bis(nonafluorobutanesulfonyl)amide and Water,"
    • J. Phys. Chem. B, 114, 11141–11148 (2010)
88. • Takashi Kakiuchi,* Yukinori Yasui, Yuki Kitazumi, and Naoya Nishi,
    • "Voltammetric Manifestation of the Ultraslow Dynamics at the Interface between Water and an Ionic Liquid, Trioctylmethylammonium bis(nonafluorobutanesulfonyl)amide,"
    • ChemPhysChem, 11, 2912 – 2918 (2010)
89. • Yukinori Yasui, Yuki Kitazumi, Naoya Nishi, and Takashi Kakiuchi,*
    • "Analysis of equilibrium electrocapillary curves at the interface between hydrophobic ionic liquid, trioctylmethylammonium bis(nonafluorobutanesulfonyl)amide, and aqueous lithium chloride solutions,"
    • J. Chem. Eng. Data, 55, 4463 – 4466 (2010)
90. • Naoya Nishi, Yukinori Yasui, Tomoya Uruga, Hajime Tanida, Tasuku Yamada, Shun-ichi Nakayama, Hideki Matsuoka, and Takashi Kakiuchi,*
    • "Ionic multilayers at the free surface of an ionic liquid, trioctylmethylammonium bis(nonafluorobutanesulfonyl)amide, probed by X-ray reflectivity measurements,"
    • J. Chem. Phys., 132, 164705(1-6) (2010)
91. • Yuko Hirohata, Naoya Nishi and Takashi Kakiuchi,*
    • "Determination of the Activity of 1-Methyl-3-octylimidazolium Bis(trifluoromethanesulfonyl)amide in Binary Ionic Liquids from the Solubility in Water,"
    • J. Chem. Eng. Data, 55, 1980 – 1985 (2010)
92. • Guillaume Revillod, Naoya Nishi, and Takashi Kakiuchi,*
    • "Orientation Correlation of Sulfosuccinate-based Room-Temperature Ionic Liquids Studied by Polarization-Resolved Hyper-Rayleigh Scattering,"
    • J. Phys. Chem. B, 113, 15322 – 15326 (2009)
93. • Aaron R. Halpern, Naoya Nishi, Jia Wen, Fan Yang, Chengxiang Xiang, Reginald M. Penner, Robert M. Corn,*
    • "Characterization of Electrodeposited Gold and Palladium Nanowire Gratings with Optical Diffraction Measurements,"
    • Anal. Chem., 81, 5585 – 5592 (2009). (selected as "Accelerated Article" and "Cover Article")
94. • Ryoichi Ishimatsu, Yuki Kitazumi, Naoya Nishi, and Takashi Kakiuchi,*
    • "Phase transition of a Binary Room-temperature Ionic Liquid Composed of Bis(pentafluoroethanesulfonyl)amide Salts of Tetraheptylammonium and N-Tetradecylisoquinolinium and its Surface Properties at the Ionic Liquid|Water Interface,"
    • J. Phys. Chem. B, 113, 9321 – 9325 (2009)
95. • Yukinori Yasui, Yuki Kitazumi, Ryoichi Ishimatsu, Naoya Nishi, and Takashi Kakiuchi,*
    • "Ultraslow response of interfacial tension to the change in the phase-boundary potential at the interface between water and a room-temperature ionic liquid, trioctylmethylammonium bis(nonafluorobutanesulfonyl)amide,"
    • J. Phys. Chem. B, 113, 3273 – 3276 (2009)
96. • Naoya Nishi, Akihito Suzuki, and Takashi Kakiuchi,*
    • "Hydrophobic ionic liquids composed of perfluoroalkyltrifluoroborates for ionic liquid-water two-phase systems,"
    • Bull. Chem. Soc. Jpn, 82, 86 – 92 (2009) (selected as "Selected Paper")
97. • Naoya Nishi, Hiroshi Murakami, Yukinori Yasui, and Takashi Kakiuchi,*
    • "Use of Highly Hydrophobic Ionic Liquids for Ion-selective Electrodes of the Liquid Membrane Type,"
    • Anal. Sci., 23, 1315 – 1320 (2008) (selected as "Hot Article")
98. • Naoya Nishi, Seiichi Imakura, and Takashi Kakiuchi,*
    • "A digital simulation study of steady-state voltammograms for the ion transfer across the liquid|liquid interface formed at the orifice of a micropipette,"
    • J. Electroanal. Chem., 621, 297 – 303 (2008)
99. • Pham Hong Phong, Hiroyuki Tomono, Naoya Nishi, Masahiro Yamamoto, and Takashi Kakiuchi,*
    • "Artificially phase-separated binary self-assembled monolayers composed of 11-amino-1-undecanethiolate and 10-carboxy-1-decanethiolate on Au(111) by use of fluoren-9-ylmethyl N-(11-mercaptoundecyl)carbamate,"
    • Electrochim. Acta, 53, 4900 – 4906 (2008)
100. • Takashi Kakiuchi,* Takahiro Yoshimatsu, and Naoya Nishi,
     • "New class of Ag/AgCl electrodes based on hydrophobic ionic liquid saturated with AgCl,"
     • Anal. Chem., 79, 7187 – 7191 (2007)
101. • Ryoichi Ishimatsu, Naoya Nishi, and Takashi Kakiuchi,*
     • "Wide Polarized Potential Windows at the Interface between Water and an Ionic Liquid, Tetraheptylammonium Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate,"
     • Chem. Lett., 36, 1166 - 1167 (2007)
102. • Naoya Nishi, Ryoichi Ishimatsu, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "Orientation of 1-dodecyl-4-phenylpyridinium ions constituting an ionic liquid at the ionic liquid|water interface studied by second harmonic generation,"
     • J. Phys. Chem. C, 111, 12461 - 12466 (2007)
103. • 西　直哉，山本雅博，垣内　隆,*
     • 「光第二高調波発生法によるＮ－アルキルイソキノリニウム系イオン液体｜水界面の構造解析」：
     • 分析化学, 56, 491 - 498 (2007)
104. • Ryoichi Ishimatsu, Naoya Nishi, and Takashi Kakiuchi,*
     • "Interfacial Ion Pairing at the Interface between Water and a Room-Temperature Ionic Liquid, N-tetradecylisoquinolinium bis(pentafluoroethylsulfonyl)imide,"
     • Langmuir, 23, 7608-7611 (2007)
105. • Pham Hong Phong, Vladimir Viktorovich Sokolov, Naoya Nishi, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "Concentration-dependent Switching of the Mode of Phase Separation in Ternary Self-assembled Monolayers of 2-Mercaptoethane Sulfonic acid, 2-Aminoethanethiol and 1-Dodecanethiol on Au(111),"
     • J. Electroanal. Chem. 600, 35 - 44 (2007)
106. • Ryoichi Ishimatsu, Fumiko Shigematsu, Takuma Hakuto, Naoya Nishi, and Takashi Kakiuchi,*
     • "Structure of the electrical double layer on the aqueous solution side of the polarized interface between water and a room-temperature ionic liquid, tetrahexylammonium bis(trifluoromethylsulfonyl)imide,"
     • Langmuir, 23, 925 - 929 (2007)
107. • Naoya Nishi, Hiroshi Murakami, Seiichi Imakura, and Takashi Kakiuchi,*
     • "Facilitated transfer of alkali-metal cations by dibenzo-18-crown-6 across the electrochemically polarized interface between an aqueous solution and a hydrophobic room-temperature ionic liquid,"
     • Anal. Chem. 78, 5805 - 5812 (2006)
108. • Norihiro Tsujioka, Seiichi Imakura, Naoya Nishi, and Takashi Kakiuchi,*
     • "Voltammetry of ion transfer across the electrochemically polarized micro liquid-liquid interface between water and a room-temperature ionic liquid, tetrahexylammonium bis(trifluoromethylsulfonyl)imide, using a glass capillary micropipette,"
     • Anal. Sci. 22, 667 - 671 (2006)
109. • Naoya Nishi, Seiichi Imakura, and Takashi Kakiuchi,*
     • "Wide electrochemical window at the interface between water and a hydrophobic room-temperature ionic liquid of tetrakis[3,5-bis(trifluoromethyl)- phenyl]borate,"
     • Anal. Chem. 78, 2726 - 2731 (2006)
110. • Naoya Nishi, Takahiro Kawakami, Fumiko Shigematsu, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "Fluorine-free and hydrophobic room-temperature molten salts, tetraalkylammonium bis(2-ethylhexyl)sulfosuccinates, and their molten salt-water two-phase properties,"
     • Green Chem. 8, 349 - 355 (2006).
111. • Pham Hong Phong, Yosuke Ooi, Daisuke Hobara, Naoya Nishi, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "Phase separation of ternary self-assembled monolayers into hydrophobic 1-dodecanethiol domains and electrostatically stabilized hydrophilic domains composed of 2-aminoethanethiol and 2-mercaptoethanesulfonic acid on Au(111),"
     • Langmuir, 21, 10581 - 10586 (2005).34
112. • 岩見安展，山本雅博,* 西直哉，垣内隆、
     • 「クマリン343の蛍光寿命測定による水|Aerosol-OT|1,2-ジクロロエタン逆ミセル系におけるサブピコ秒溶媒和ダイナミクス解析」：
     • 分析化学, 54, 485 - 494 (2005)
113. • Takashi Kakiuchi,* Norihiro Tsujioka, Kenji Sueishi, Naoya Nishi, and Masahiro Yamamoto,
     • "Polarized potential window available at the interface between an aqueous electrolyte solution and tetraalkylammonium imide salts,"
     • Electrochemistry, 72, 833 - 835 (2004)
114. • Kazuyuki Tanaka, Naoya Nishi, and Takashi Kakiuchi,*
     • "Electroneutrality-coupling of the electron transfer at the electrode surface and the ion transfer across the interface between the thin-layer of 1-octyl-3-methylimidazolium bis(perfluoroalkylsulfonyl)imide covering the electrode surface and the outer electrolyte solution,"
     • Anal. Sci., 20, 1553 - 1557 (2004)
115. • Takashi Kakiuchi,* Fumiko Shigematsu, Takuya Kasahara, Naoya Nishi, and Masahiro Yamamoto,
     • "Electrocapillarity at the nonpolarized interface between the aqueous solution and the room-temperature molten salt composed of 1-octyl-3-methylimidazolium bis(pentafluoroethylsulfonyl)imide,"
     • Phys. Chem. Chem. Phys., 6, 4445 - 4449 (2004)
116. • Takuya Kasahara, Naoya Nishi, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "Electrochemical Instability in the Transfer of Cationic Surfactant across the 1,2-Dichloroethane|Water interface,"
     • Langmuir, 20, 875-881 (2004)
117. • Naoya Nishi, Daisuke Hobara, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "Orientation of o-, m-, and p-Methylbenzylmercaptans Adsorbed on Au(111) Probed by Broad-Bandwidth Sum Frequency Generation Spectroscopy,"
     • Langmuir, 19, 6187-6192 (2003)
118. • Naoya Nishi, Daisuke Hobara, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "Chain-length-dependent change in the structure of self-assembled monolayers of n-alkanethiols on Au(111) probed by broad-bandwidth sum frequency generation spectroscopy,"
     • J. Chem. Phys., 118, 1904-1911 (2003)
119. • Naoya Nishi, Daisuke Hobara, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "Total-internal-reflection broad-bandwidth sum frequency generation spectroscopy of hexadecanethiol adsorbed on thin gold film deposited on CaF2 prism,"
     • Anal. Sci., 19, 887-890 (2003)
120. • Naoya Nishi and Takashi Kakiuchi,*
     • "Potential-dependent Adsorption of Transferring Ions Having Asymmetric Charge Distribution at the 1,2-Dichloroethane|Water Interface and Its Ion-transfer Kinetics Studied by AC-modulated Voltfluorometry,"
     • Russ. J. Electrochem., 39, 138-142 (2003)
121. • Takashi Kakiuchi,* Naoya Nishi, Takuya Kasahara, and Minako Chiba,
     • "Regular Irregularity in the Transfer of Anionic Surfactant across the Liquid|Liquid Interface,"
     • ChemPhysChem, 4, 179-185 (2003)
122. • Naoya Nishi, Kazuo Izawa, Masahiro Yamamoto, and Takashi Kakiuchi,*
     • "AC-modulated voltfluorometric study of the transient adsorption of Rose Bengal dianions in the transfer across the 1,2-dichloroethane|water interface,"
     • J. Phys. Chem. B, 105, 8162-8169 (2001)
123. • Atsushi Mineshige,* Toshiya Taji, Yasunori Muroi, Masafumi Kobune, Satoshi Fujii, Naoya Nishi, Minoru Inaba, and Zempachi Ogumi,
     • "Oxygen chemical potential variation in ceria-based solid oxide fuel cells determined by Raman spectroscopy,"
     • Solid State Ionics, 135, 481-485 (2000)

総説・解説 (Review papers)

1. • 西　直哉、
   • 「イオン液体と油との間の非水液液界面における金属ナノ構造の還元析出」：
   • 溶融塩および高温化学, 66, 20–24 (2023).
2. • Masaki Matsui,* Yuki Orikasa, Tomoki Uchiyama, Naoya Nishi, Yuto Miyahara, Misae Otoyama, Tetsuya Tsuda,
   • "Electrochemical in situ/operando spectroscopy and microscopy Part 2: Battery Applications,"
   • Electrochemistry, 90, 102020(1-17) (2022).
3. • Masaki Matsui,* Yuki Orikasa, Tomoki Uchiyama, Naoya Nishi, Yuto Miyahara, Misae Otoyama, Tetsuya Tsuda,
   • "Electrochemical in situ/operando spectroscopy and microscopy Part 1: Fundamentals,"
   • Electrochemistry, 90, 102009(1-16) (2022).
4. • Naoya Nishi,
   • "Ionic liquids as liquid materials for analytical chemistry,"
   • Anal. Sci., 36, 1 - 2 (2020).
5. • 西　直哉、
   • 「イオン液体のソフト液液界面で成長する金属ナノファイバー」：
   • 科学と工業, 92(4), 91 – 96 (2018).
6. • 西　直哉、
   • 「イオン液体表面における分子レベルの構造」：
   • オレオサイエンス, 15(7), 305 – 310 (2015).
7. • 本林健太、西　直哉、作花哲夫、大澤雅俊、
   • 「電極界面におけるイオン液体の構造とその電位応答：表面増強赤外分光法による研究」：
   • 溶融塩および高温化学, 58, 55 – 62 (2015).
8. • 西　直哉、
   • 「イオン液体界面における構造とダイナミクスの多角的な界面分光法による研究」：
   • Colloid and Interface Communication, 39(4), 35 – 37 (2014).
9. • 西　直哉、
   • 「汗の電気分析化学：一時転写タトゥー型 電気化学バイオセンサーによる 乳酸の非侵襲測定」：
   • 化学と工業, 67(9), 785 – 785 (2014).
10. • 西　直哉、垣内　隆、
    • 「イオン液体界面の電気二重層構造を探る！」：
    • 化学, 63(3), 68 – 69 (2008).
11. • 西　直哉、
    • 「有限要素法による電気化学反応のデジタルシミュレーション」：
    • Rev. Polarogr.,53, 41 – 50 (2007).
12. • 西　直哉、
    • 「疎水性イオン液体水二相系を用いる生体高分子の抽出」：
    • ぶんせき, 407 – 407 (2007).
13. • Takashi Kakiuchi and Naoya Nishi,
    • "Ionic liquid|water interface: A new electrified system fr electrochemistry,"
    • Electrochemistry 74, 942 - 948 (2006).
14. • 西　直哉、
    • 「イオン液体界面の分子構造」：
    • 溶融塩および高温化学, 48, 97 – 100 (2005).

受賞歴 (Awards)

1. 日本分析化学会2011年　奨励賞
2. 宇部興産学術振興財団　第52回学術奨励賞
3. 日本化学会コロイドおよび界面化学部会　2014年度　科学奨励賞

1. Young Researcher Award, The Japan Society for Analytical Chemistry (2011).
2. Young Researcher Award for Science, The UBE foundation (2011).
3. Young Researcher Award for Science, Division of Colloid and Surface Chemistry, Chemical Society of Japan (2014).