Hao-Chun Yang, Guan-Long Zeng, Su-Ying Chien, Shao-An Hua, Yuta Onohara, Martin Cigl, Alexej Bubnov, Jey-Jau Lee, Damian Pociecha, Krzysztof A. Bogdanowicz, Agnieszka Iwan, Petra Vaňkátová, Věra Hamplová, Kingo Uchida, Yasutaka Kitagawa, Hiroyuki Yoshida and Hsiu-Hui Chen*
Photo-active dithienylcyclopentene-derived room temperature nematics
J. Mater. Chem. C, 2025, accepted.
(Selected as Journal of Materials Chemistry C HOT Papers)
DOI: https://doi.org/10.1039/D5TC00261C
Kazuki Honjo, Taigo Kamimura, Kohei Tada, Ryohei Kishi, Yasutaka Kitagawa*
Theoretical study of local environmental effect on electronic structure of M-cluster
Eur. J. Inorg. Chem., 2025, accepted.
DOI: https://doi.org/10.1002/ejic.202500016
Hirokazu Miyoshi, Ryosuke Sugiura, Ryohei Kishi*, Atsuya Muranaka, Nagao Kobayashi, Masanobu Uchiyama, Yutaka Ie, Masayoshi Nakano, Yoshito Tobe*
Tetraanion of Tetracyclopentatetraphenylnene Derivative: Global versus Local Conjugation Modes
Chemistry, 2025, 7(2), 51 (17 pages). https://doi.org/10.3390/chemistry7020051. (Open-Shell Systems—a Memorial Issue Dedicated to Professor Masayoshi Nakano)
Naoka Amamizu*, Mitsuhiro Nishida, Keisuke Sasaki, Ryohei Kishi, Yasutaka Kitagawa*
Theoretical study on the open-shell electronic structure and electron conductivity of [18]annulene as a molecular parallel circuit model
Nanomaterials, 2024, 14(1), 98 (14 pages), DOI: https://doi.org/10.3390/nano14010098
Katsumasa Sakoda, Sho Yamaguchi, Kazuki Honjo, Yasutaka Kitagawa, Takato Mitsudome, Tomoo Mizugaki*
Reductive amination of carboxylic acids under H2 using a heterogeneous Pt–Mo catalyst
Green Chem., 2024, 26, 2571-2576, DOI:https://doi.org/10.1039/D3GC02155F
プレスリリース(2024.1.5)
『天然に多く存在するカルボン酸から 有用なアルキルアミンを合成する新触媒環境にやさしく、より安全で省エネルギーな触媒プロセスの開発に期待』
ResOU:https://resou.osaka-u.ac.jp/ja/research/2024/20240105_3
Wataru Yoshida*, Yasuteru Shigeta, Hiroshi Matsui, Hajime Miyamoto, Ryohei Kishi*, Yasutaka Kitagawa
Theoretical Study on Molecular Charge Populations of One-Dimensional π-Stacked Multimers in Neutral and Electron Oxidation States
Bull. Chem. Soc. Jpn., 2024, 97, uoae009, DOI: https://doi.org/10.1093/bulcsj/uoae009
Kaisheng Wang, Satoru Ito, Shuang Ren, Daiki Shimizu, Norihito Fukui, Ryohei Kishi, Qiang Liu, Atsuhiro Osuka, Jianxin Song, Hiroshi Shinokubo
A Triply Linked Porphyrin−Norcorrole Hybrid with Singlet Diradical Character
Angew. Chem. Int. Ed., 2024, 63, e202401233, DOI: https://doi.org/10.1002/anie.202401233
Wataru Yoshida*, Hajime Miyamoto, Jinki Shoda, Hiroshi Matsui, Ryota Sugimori, Ryohei Kishi*, Yasutaka Kitagawa
Theoretical Study on Open-Shell Electronic Structures of Through-Bond/Through-Space Hybrid Conjugated Ladder Graphs
Chem. Phys. Lett., 2024, 842, 141196, DOI: https://doi.org/10.1016/j.cplett.2024.141196
Shigenori Iwai*, Yuta Hayashi, Tomohiro Baba, Yasutaka Kitagawa
Acceleration of hydrolytic ring opening of N7-alkylguanine by the terminal carbamoyl group of glycidamide
Chem. Commun., 2024, 60, 5014-5017, DOI: https://doi.org/10.1039/D3CC04997C
Si-Yu Liu, Sha Li, Shusaku Ukai, Ryo Nozawa, Norihito Fukui, Ryota Sugimori, Ryohei Kishi, Hiroshi Shinokubo
Homochiral and Heterochiral Self-Sorting Assemblies of Antiaromatic Ni(II) Norcorrole Dimers
Chem. Eur. J., 2024, 30, e202400292, DOI: https://doi.org/10.1002/chem.202400292
Jinki Shoda, Masako Yokoyama, Wataru Yoshida, Hiroshi Matsui, Ryota Sugimori, Ryohei Kishi, Yasutaka Kitagawa
Theoretical study on the correlation between open-shell electronic structures and third-order nonlinear optical properties in one-dimensional chains of π-radicals
J. Phys. Chem. A, 2024, 128, 8473–8482. DOI: https://doi.org/10.1021/acs.jpca.4c05200
Kohei Tada
Neural network potential calculations for melamine adsorption onto Pt (111) compared with density functional theory
Chem. Lett., 2024, 53(10), upae173, DOI: https://doi.org/10.1093/chemle/upae173
Kaisheng Wang, Aninda Ghosh, Daiki Shimizu, Hideaki Takano, Masatoshi Ishida, Ryohei Kishi, Hiroshi Shinokubo
Bowl-Shaped Anthracene-Fused Antiaromatic Ni(II) Norcorrole: Synthesis, Structure, Assembly with C60, and Photothermal Conversion
Angew. Chem. Int. Ed., 2024, in press. DOI: https://doi.org/10.1002/anie.202419289
Masako Yokoyama, Ryohei Kishi, Yasutaka Kitagawa
Theoretical Study on One- and Two-Photon Absorption Properties of π-Stacked Multimer Models of Phenalenyl Radicals
Chemistry, 2024, 6, 1427–1438. https://doi.org/10.3390/chemistry6060085 (Open-Shell Systems—a Memorial Issue Dedicated to Professor Masayoshi Nakano)
Hajime Miyamoto, Kenji Okada, Kohei Tada, Ryohei Kishi, Yasutaka Kitagawa
Theoretical Study on Singlet Fission Dynamics and Triplet Migration Process in Symmetric Heterotrimer Models
Molecules, 2024, 29, 5449 (15 pages). https://doi.org/10.3390/molecules29225449
Masako Yokoyama, Ryohei Kishi, Yasutaka Kitagawa
Theoretical Study on Stacking Distance Dependence of One- and Two-Photon Absorption Properties of Phenalenyl π-Dimer Models
Bull. Chem. Soc. Jpn., 2024, 97, uoae126 (9 pages). https://doi.org/10.1093/bulcsj/uoae126
Ryota Sugimori, Ryohei Kishi, Hiroshi Shinokubo, Yasutaka Kitagawa
Diradical character view of energy stabilization in π-stacked dimers of antiaromatic molecules
Chem. Lett., 2024, 53, upae224 (5 pages). https://doi.org/10.1093/chemle/upae224
Ryota Sugimori, Masato Ikeuchi, Ryohei Kishi, Yasutaka Kitagawa
Theoretical study on aromatic characters in π-stacked multimers composed of antiaromatic molecules
Bull. Chem. Soc. Jpn., 2024, 97, uoae133 (11 pages). https://doi.org/10.1093/bulcsj/uoae133
Ryota Sugimori, Kenji Okada, Ryohei Kishi, Yasutaka Kitagawa
Stacked-ring aromaticity from the viewpoint of the effective number of π-electrons
Chem. Sci, 2025, 16, 1707-1715. DOI: 10.1039/D4SC07123A https://doi.org/10.1039/D4SC07123A
【Inside Back Cover】Chem. Sci., 2025, 16, 2047 https://doi.org/10.1039/D5SC90025E に選出されました
Chem Sci Pick of the Week Collection, Chemical Science HOT Article Collection に選出されました
Kei Wada*, Kenji Kobayashi†, Iori Era†, Yusuke Isobe, Taigo Kamimura, Masaki Marukawa, Takayuki Nagae, Kazuki Honjo, Noriko Kaseda, Yumiko Motoyama, Kengo Inoue, Masakazu Sugishima, Katsuhiro Kusaka, Naomine Yano, Keiichi Fukuyama, Masaki Mishima, Yasutaka Kitagawa*, Masaki Unno*
Protonation/deprotonation-driven switch for the redox stability of low potential [4Fe-4S] ferredoxin
eLife, 2024, in press., DOI:10.7554/eLife.102506
プレスリリース(2024.12.2)
『生体内の酸化還元反応における“電子の運び屋”役のタンパク質エネルギー獲得のための生物共通の電位制御の仕組みを解明―水素原子1つが司る“ナノスイッチ機構”の発見』
ResOU:https://resou.osaka-u.ac.jp/ja/research/2024/20241202_1
Naoka Amamizu, Keisuke Sasaki, Mitsuhiro Nishida, Koki Masuda, Ren Inoue, Kaito Taka, Kohei Tada, Ryohei Kishi, Yasutaka Kitagawa
Theoretical study on single-molecule electron conductivity of paddlewheel-type dichromium(II,II) tetracarboxylate complexes
Bull. Chem. Soc. Jpn., 2024, 97, uoae130.
DOI: https://doi.org/10.1093/bulcsj/uoae130
Naoka Amamizu, Kohei Tada, Ryohei Kishi, Wataru Kosaka, Hitoshi Miyasaka, Yasutaka Kitagawa
Difference in spin structure of magnetic metal-organic frameworks between cluster model and periodic system
Chem. Lett., 2024, 53, upae230.
DOI: https://doi.org/10.1093/chemle/upae230
Kohei Tada, Koki Masuda, Ryohei Kishi, Yasutaka Kitagawa
Systematic Investigation on Surface Diradicals Using Theoretical Models: 2M/MgO and 2M/BaO (M = Cu, Ag, and Au)
Chemistry, 2024, 6(6), 1572-1592
DOI: https://doi.org/10.3390/chemistry6060095
Yasutaka Kitagawa, Kazuki Honjo, Kohei Tada, Ryohei Kishi
Theoretical Study on Redox Potential Control of Iron-Sulfur Cluster by Hydrogen Bonds
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Invited talk (OIV-04), Hokkaido University, Sapporo, Japan, June 17-21, 2024
Y. Kitagawaa, R. Inouea, K. Masudaa, K. Takaa, N. Amamizua,K. Tadaa, R. Kishi
Density functional dependency of DFT-calculated magnetic anisotropic parameter (D) values on dysprosium(III) metallocene complex
Pre-Asian Conference on Molecular Magnetism, Invited talk (OL03), Ewha Womans University, Seoul, Republic of Korea, August 30, 2024
Yasutaka Kitagawa
Theoretical study of structural dependency on magnetic property of dysprosium(III) metallocene complex
3rd Asian Conference on Molecular Magnetism (ACMMⅢ) , Invited talk (IL06), Hanhwa Resort Haeundae, Busan, Republic of Korea, September 1-4, 2024
Kohei Tada
Quantum chemistry for solid-molecule interfaces: Theoretical development and issues on achieving ab initio data-driven science
Japan Society of Vacuum and Surface Science 2024 (JVSS2024) , Plenary Talk (3F19), Kitakyushu International Conference Center , Kita-kyushu, Japan, October 20-24, 2024
Ryota Sugimori, Kenji Okada, Ryohei Kishi, Yasutaka Kitagawa
On the relationship between stacked-ring aromaticity and Baird’s rule
Aromaticity 2025, Invited Talk, Gran Museo del Mundo Maya, Mérida, Mexico, January 27-30, 2025.
Hajime Miyamoto, Kenji Okada, Ryohei Kishi, Yasutaka Kitagawa
Theoretical study on singlet fission process in one-dimensional aggregate systems considering position-dependent intermolecular electronic couplings
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Poster(PI-06), Hokkaido University, Sapporo, Japan, June 17-21, 2024
Manaya Kawasaki, Chihiro Nakasuji, Ryohei Kishi, Nijito Mukai, Takuya Kodama, Mamoru Tobisu, Yasutaka Kitagawa
Theoretical Study on Electronic Excited States of a Gallylene Baring a Phenalenyl-Based Ligand
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Poster(PI-07), Hokkaido University, Sapporo, Japan, June 17-21, 2024
Naoka Amamizu, Kohei Tada, Ryohei Kishi, Wataru Kosaka, Hitoshi Miyasaka, Yasutaka Kitagawa
Difference in Spin Structure of Metal-Organic Frameworks between Cluster Model and Periodic System
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Poster(PI-33), Hokkaido University, Sapporo, Japan, June 17-21, 2024
Mitsuhiro Nishida, Naoka Amamizu, Ryohei Kishi, Yasutaka Kitagawa
Theoretical study on the impact of heteroatom substitution on single-molecule electrical conductivity
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Poster(PII-09), Hokkaido University, Sapporo, Japan, June 17-21, 2024
Kazuki Honjo, Ryohei Kishi, Yasutaka Kitagawa
Theoretical study on the effect of surrounding environment on electronic states around reaction active center of nitrogenase
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Poster(PII-28), Hokkaido University, Sapporo, Japan, June 17-21, 2024
Ryohei Kishi, Masato Ikeuchi, Ryota Sugimori, Yasutaka Kitagawa
Theoretical Study on Electronic Structures and Response Properties of π-Stacked Multimers of Antiaromatic Molecules
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Poster(PII-30), Hokkaido University, Sapporo, Japan, June 17-21, 2024
Ryota Sugimori, Kenji Okada, Ryohei Kishi, Yasutaka Kitagawa
Analysis of electronic structures of antiaromatic molecular π-dimers based on the multi-reference perturbation theory calculations using the diabatic basis representations
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Poster(PII-32), Hokkaido University, Sapporo, Japan, June 17-21, 2024
Kaichi Shimada, Ryohei Kishi, Yasutaka Kitagawa
Theoretical study on electronic structures and properties of open-shell molecular systems involving azulene units
The 8th Japan-Czech-Slovakia (JCS) International Symposium on Theoretical Chemistry, Poster(PII-08), Hokkaido University, Sapporo, Japan, June 17-21, 2024
◯Ryota Sugimori, Kenji Okada, Ryohei Kishi, Yasutaka Kitagawa
Mechanism of stacked-ring aromaticity from the viewpoint of the effective number of π-electrons
20th International Symposium on Novel Aromatic Compounds (ISNA-20), Poster(P-189), Ted Rogers School of Management (TRSM), Toronto Metropolitan University (TMU), Toronto, August 11-16, 2024.
Ryota Sugimori, Masato Ikeuchi, ◯Ryohei Kishi, Yasutaka Kitagawa
Theoretical study on electronic structures of multimers of closely π-stacked antiaromatic molecules
20th International Symposium on Novel Aromatic Compounds (ISNA-20), Poster(P-92), Ted Rogers School of Management (TRSM), Toronto Metropolitan University (TMU), Toronto, August 11-16, 2024.
Kaito Taka
Theoretical study on magnetic properties of Terbium(III) complexes with nitroxide radicals as ligands
3rd Asian Conference on Molecular Magnetism (ACMMⅢ) , Poster(PO33), Hanhwa Resort Haeundae, Busan, Republic of Korea, September 1-4, 2024
Koki Masuda
Theoretical study on relationship between structure and magnetic relaxation barrier in dysprosium (III) metallocene complex
3rd Asian Conference on Molecular Magnetism (ACMMⅢ) , Poster(PO36), Hanhwa Resort Haeundae, Busan, Republic of Korea, September 1-4, 2024
Naoka Amamizu
Theoretical study on relationship between inter-molecular magnetic exchange interaction and local molecular structure in metal-organic frameworks
3rd Asian Conference on Molecular Magnetism (ACMMⅢ) , Poster(PO47), Hanhwa Resort Haeundae, Busan, Republic of Korea, September 1-4, 2024
Ren Inoue
Theoretical Study on Functional Dependency of DFT Calculation for Magnetic Anisotropy toward Theoretical Design of SMMs
3rd Asian Conference on Molecular Magnetism (ACMMⅢ) , Poster(PO57), Hanhwa Resort Haeundae, Busan, Republic of Korea, September 1-4, 2024
Ryohei Kishi
Theoretical study on open-shell electronic structures of through-bond through-space hybrid conjugated systems
11th Triennial Congress of the International Society for Theoretical Chemical Physics(ISTCP 2024), Poster(PO2-41), Qingdao Huanghai Hotel, Qingdao, China, October 13-18, 2024
Hajime Miyamoto
Theoretical study on singlet fission dynamics in finite-size molecular aggregates with various intermolecular interaction strengths and structures
11th Triennial Congress of the International Society for Theoretical Chemical Physics(ISTCP 2024), Poster(PO1-42), Qingdao Huanghai Hotel, Qingdao, China, October 13-18, 2024
〇Kohei Tada, Sho Yamaguchi, Tomoo Mizugaki
Hydrogen adsorptions onto nickel carbide (113) surfaces: A comparative study of density functional theory and neural network potential calculations
10th International Symposium on Surface Science (ISSS10), Poster(2P86), Kitakyushu International Conference Center, Kita-kyushu, Japan, October 20-24, 2024
Tomohiko Nishiuchi*, Yuta Makihara, Ryohei Kishi, Hiroyasu Sato, Takashi Kubo*
Stacked antiaromaticity in the π-congested space between the aromatic rings in the anthracene dimer
J. Phys. Org. Chem. 2023, 36, e4451. https://doi.org/10.1002/poc.4451
Takayoshi Tonami, Masayoshi Nakano, Ryohei Kishi, Yasutaka Kitagawa
Effects of introducing nitrogen atoms into oligoacene skeleton on vibronic coupling and singlet fission dynamics
Chem. Phys. Lett., 2023, 813, 140311. DOI :https://doi.org/10.1016/j.cplett.2023.140311
Takayoshi Tonami, Hajime Miyamoto, Masayoshi Nakano, Ryohei Kishi, Yasutaka Kitagawa
Theoretical Study on Thermal Structural Fluctuation Effects of Intermolecular Configurations on Singlet Fission in Pentacene Crystal Models
J. Phys. Chem. A , 2023, 127, 1883–18931, https://doi.org/10.1021/acs.jpca.2c08864
Bo-Hao Chen, Jun-Jia Xu, Wei-Ren Lai, Chung-Kai Chang, Jeng-Lung Chen, Jyh-Fu Lee, Jin-Ming Chen, Hwo-Shuenn Sheu, Jey-Jau Lee, Yoshiki Kubota, Ming-Hsi Chiang, Yasutaka Kitagawa*, Yu-Chun Chuang*, I-Jui Hsu*
Structure determination and magnetic studies of triazole chelated Co(II) coordination polymers
J. Chin. Chem. Soc., 2023, 70, 1187-1199, https://doi.org/10.1002/jccs.202300061
Yuki Miyazawa, Zhe Wang, Sayaka Hatano, Ryukichi Takagi, Hideto Matsuoka, Naoka Amamizu, Yasutaka Kitagawa, Eiichi Kayahara, Shigeru Yamago, Manabu Abe
Generation and Characterization of a Tetraradical Embedded in a Curved Cyclic Paraphenylene Unit
Chem. Eur. J. , 2023, 29, e202301009, DOI:https://doi.org/10.1002/chem.202301009
Rina Takano, Koki Masuda, Keigo CHO, Yasutaka Kitagawa, Takayuki Ishida
Bilayered lanthanide squarate hydrates (Ln = Eu to Lu) and magnetization reversal barriers 21 K for Ln = Tm and 57 K for Yb
Dalton Trans., 2023, 52, 8873-8882, DOI : https://doi.org/10.1039/D2DT03878A
Takuya Kodama, Kenta Uchida, Chihiro Nakasuji, Ryohei Kishi, Yasutaka Kitagawa, and Mamoru Tobisu
Open-Shell Germylene Stabilized by a Phenalenyl-Based Ligand
Inorg. Chem., 2023, 62, 7861-7867, https://doi.org/10.1021/acs.inorgchem.3c00583
Dominika Pomikło, Anna Pietrzak, Ryohei Kishi, and Piotr Kaszyński
Bi-Blatter diradicals: Convenient access to regioisomers with tunable electronic and magnetic properties
Mater. Chem. Front., 7, 4928-4943, https://doi.org/10.1039/d3qm00666b
Yusuke Mizuno, Akira Nogata, Mitsuharu Suzuki, Ken-ichi Nakayama, Ichiro Hisaki, Ryohei Kishi, Akihito Konishi, and Makoto Yasuda
Synthesis and Characterization of Dibenzothieno[a,f]pentalenes Enabling Large Antiaromaticity and Moderate Open-Shell Character through a Small Energy Barrier for Bond-Shift Valence Tautomerization
J. Am. Chem. Soc., 2023, 145, 20595-20609, DOI: https://pubs.acs.org/doi/10.1021/jacs.3c07356
Wataru Kosaka, Yoshie Hiwatashi, Naoka Amamizu, Yasutaka Kitagawa, Jun Zhang, Hitoshi Miyasaka
Densely Packed CO2 Aids Charge, Spin, and Lattice Ordering Partially Fluctuated in a Porous Metal–Organic Framework Magnet
Angew. Chem. Int. Ed., 2023, 62, e202312205, DOI : https://doi.org/10.1002/anie.202312205
プレスリリース(2023.11.20)
『二酸化炭素の吸着により多孔性磁石の性能向上に成功 ―局所的な構造ゆらぎと電荷ゆらぎの抑制に起因―』
ResOU :https://resou.osaka-u.ac.jp/ja/research/2023/20231120_1
日経新聞:https://www.nikkei.com/article/DGXZRSP664696_Q3A121C2000000/
Kohei Tada, Yasutaka Kitagawa
Issues on DFT+U calculations of organic diradicals
Phys. Chem. Chem. Phys., 2023, 25, 32110-32122, DOI : https://doi.org/10.1039/D3CP04187E
Jun Zhang, Wataru Kosaka, Qingxin Liu, Naoka Amamizu, Yasutaka Kitagawa, and Hitoshi Miyasaka*
CO2-Sensitive Porous Magnet: Antiferromagnet Creation from a Paramagnetic Charge-Transfer Layered Metal–Organic Framework
J. Am. Chem. Soc. 2023, 145, 26179-26189, DOI : https://doi.org/10.1021/jacs.3c08583
プレスリリース(2023.12.5)
『二酸化炭素の吸着で非磁石を磁石に変えることに成功 ガス吸着による磁気スイッチ開発に進展』
ResOU :https://resou.osaka-u.ac.jp/ja/research/2023/20231205_1
日経新聞:https://www.nikkei.com/article/DGXZRSP665385_V01C23A2000000/