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List of Publications and Presentations
Publications related to the thesis
(Chapter 2)
1. "An Au25(SR)18 Cluster with a Face-Centered Cubic Core", Tsubasa Omoda,
Shinjiro Takano, Seiji Yamazoe, Kiichirou Koyasu, Yuichi Negishi, Tatsuya Tsukuda,
J. Phys. Chem. C 2018, 122, 13199-13204.
(Chapter 3)
2.
"Reduction-resistant [Au25(cyclohexanethiolate)18]0 with an Icosahedral Au13 Core",
Tsubasa Omoda, Shinjiro Takano, Tatsuya Tsukuda, Chem. Lett. 2019, 48, 885-887.
Publications not related to the thesis
1. “Toward Controlling the Electronic Structures of Chemically Modified Superatoms of
Gold and Silver”, Tsubasa Omoda, Shinjiro Takano, Tatsuya Tsukuda, Small in press.
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Oral presentations
1.
2.
3.
4.
“Novel redox and optical properties of thiolate-protected gold superatom Au25(SR)18
induced by bulky ligands”, Tsubasa Omoda, Shinjiro Takano, Tatsuya Tsukuda, The
101st CSJ Annual Meeting, Online, March 2021.
“チオラート配位子の骨格が誘起する金超原子の特異的構造”, 重田 翼，高
野 慎二郎，佃 達哉，第 13 回分子科学討論会，名古屋，2019 年 9 月．
“面心立方型の新規チオラート保護金クラスターAu25(SR)18 の合成とその起
源”, 重田 翼，高野 慎二郎，山添 誠司，小安 喜一郎，根岸 雄一，佃 達
哉，第 12 回分子科学討論会，福岡，2018 年 9 月．
“面心立方型の Au25(SR)18 クラスターの合成と評価”, 重田 翼，高野 慎二郎，
山添 誠司，小安 喜一郎，佃 達哉，ナノ学会第 16 回大会，東京，2018 年
5 月．
Poster presentations
1.
2.
3.
4.
“Thiolate (RS)-protected Au25(SR)18 clusters with novel structures and redox
properties”, Tsubasa Omoda, Shinjiro Takano, Tatsuya Tsukuda, The 76th Fujihara
Seminar, International Workshop on Designer Nanocluster Materials -From Gas
Phase to Condensed phase-, Tomakomai, Japan, September 2019.
“XAFS を用いた面心立方型の新規チオラート保護金クラスターAu25(SR)18
の構造評価”, 重田 翼，高野 慎二郎，山添 誠司，小安 喜一郎，根岸 雄一，
佃 達哉，第 21 回 XAFS 討論会，札幌，2018 年 9 月．
“An Au25(SR)18 cluster with a face-centered cubic core: synthesis and
characterization”, Tsubasa Omoda, Shinjiro Takano, Seiji Yamazoe, Kiichirou
Koyasu, Yuichi Negishi, Tatsuya Tsukuda, The 19th International Symposium of
Small Particles and Inorganic clusters (ISSPIC19), Hangzhou, China, August 2018.
“A novel Au25(SR)18 cluster with a face-centered-cubic gold core”, Tsubasa Omoda,
Shinjiro Takano, Seiji Yamazoe, Kiichirou Koyasu, Tatsuya Tsukuda, Asian
Symposium on Nanoscience and Nanotechnology 2018 (ASNANO2018)
"Fundamentals and applications of Nanoclusters and Nanoparticles", Tokyo, Japan,
May 2018. (Best Poster Award)
115
Acknowledgements
The present works were conducted at Department of Chemistry, Graduate School of
Science, The University of Tokyo, under the supervision of Prof. Tatsuya Tsukuda.
First of all, I would like to express the deepest appreciation to Prof. Tsukuda for his
diligent guiding for five years. I learned what is required to be a scientist from him: the
elementary knowledge of physical chemistry, the skills for writing and presentations, and
how to propose and improve the research topics. Not only the scientific training, but also
he kindly gave me an opportunity to interact with domestic and international researchers.
Without his patient help, this thesis would not have been possible.
I am deeply grateful to Associate Prof. Kiichirou Koyasu for his instructions in the
gas phase experiments and theoretical calculations. He especially taught me the mass
spectrometric technique and the theoretical calculation. In addition, his comments from a
different perspective helped me to extend an understanding of my research. I would like
to express my gratitude to Assistant Prof. Shinjiro Takano for his supports in the liquid
phase experiments. He made a great contribution in the measurement and the analysis of
single crystal X-ray diffraction. He also spent much time for discussions concerned with
the experimental techniques and the research direction. My heartfelt appreciation goes to
Prof. Seiji Yamazoe (Tokyo Metropolitan University) who was a former Assistant Prof.
of Catalytic Chemistry Laboratory. During his tenure with our group, I got an education
about the X-ray absorption spectroscopy and many chances to measure it from him. He
continuously supported the analysis and the calculation on it even after the move. I owe
my gratitude to Assistant Prof. Shinya Masuda. I received a lot of insights and advices
from him during the research.
I would like to appreciate Prof. Yuichi Negishi (Tokyo University of Science) for the
collaboration and his valuable comments in the work of Chapter 2. I sincerely thank Dr.
Kazuo Kato (Japan Synchrotron Radiation Research Institute, JASRI) for the access of
the synchrotron facilities.
I owe my thanks to Ms. Yuka Sakurai for her punctilious support in an office work
and the daily life at the laboratory. Besides, my special thanks goes to the current group
members: Mr. Sojiro Emori, Mr. Shingo Hasegawa, Ms. Megumi Suyama, Mr.
Katsunosuke Nakamura, Mr. Haru Hirai, Mr. Shun Ito, Ms. Koto Hirano, Mr. Taro Shigeta,
Mr. Shotaro Matsuda, Mr. Li Xiang, Mr. Wang Lewei, Ms. Emi Ito, Mr. Kensuke Eya,
Mr. Toshiki Komagata, Ms. Yuriko Tasaka, Mr. Haruki Fukuda, Mr. Takumi Imagawa,
Mr. Masashi Iwamoto, Mr. Naoki Kito, and Mr. Koki Sakamoto. I am also grateful to the
former group members: Dr. Hirokazu Kitazawa, Dr. Liang Feng, Dr. Ryo Takahata, Dr.
116
Chun-Fu Chang, Dr. Satoru Muramatsu, Dr. Ryohei Tomihara, Dr. Shun Hayashi, Dr.
Keisuke Hirata, Dr. Kazuyuki Tsuruoka, Mr. Ryo Ishida, Mr. Naoto Sasaki, Mr. Daiki
Shuto, Mr. Toshiaki Yanase, Mr. Hiroki Yamada, Mr. Hiroki Yamamoto, Mr. Lim Wei
Loon, Mr. Kuenhee Kim, Mr. Ryota Shibuya, Mr. Naoaki Shinjo, Mr. Yuto Nakajima, Mr.
Ray Horie, Ms. Atsuko Horinouchi, Mr. Junichi Yamazaki, Mr. Keishiro Yamashita, Mr.
Satoshi Osugi, Mr. Takeki Konuma, Mr. Mizuki Shimojima, Mr. Atsushi Matsuo, and Ms.
Lin I-Hsuan.
I appreciate the financial supports from Hisao Iwai Memorial Scholarship
Foundation, Marubun Research Promotion Foundation, and Japan Society for the
Promotion of Science (JSPS) Research Fellowship for Young Scientists. Theoretical
calculations in Chapter 2 were partly performed using the Research Center for
Computational Science, Okazaki. Synchrotron radiation experiments in Chapter 2 were
performed with the approval of JASRI (Proposal Nos. 2016A1436, 2016B0910,
2017A0910, and 2017B0910).
Last but certainly not least, I would like to express my heartfelt thanks to my friends
and family for their selfless support at all times.
Tsubasa Omoda
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