A02 Takashi Hirose

Takashi Hirose		Participating A02
Affiliation	Institute for Chemical Research, Kyoto University
Position	Associate Professor
Contact	hirose@scl.kyoto-u.ac.jp
HP	https://www.scl.kyoto-u.ac.jp/~kouzou/member/hirose_en.html
Research Project	Creation of Multi-Dimensional Chiral Assemblies Based on π-Extended Helical Aromatic Ligands
Abstract	The helically-twisted molecular geometry of rigid π-extended helicenes is a unique asymmetric structure to construct asymmetric spatial arrangements of metal elements. In this study, we construct metal-organic hybrid systems with a highly asymmetric structure induced by π-extended helical ligands to develop a new asymmetric chemistry based on mutual electronic interactions between p- and d- orbitals. More specifically, we will investigate on (1) introduction of metal coordination site to π-extended helicenes, (2) quantum chemical analysis of electronic interaction between helical ligands and metal centers, and (3) construction of metal-organic integrated self-assemblies using the p-extended helical ligands. Consequently, we intend to propose a molecular design strategy for chiroptical and electronic properties based on the control of the chiral arrangement of metal elements.
Research Areas	Physical Organic Chemistry、Photochemistry、Organic Chemistry
Keywords	Helicenes、Chiral Ligands、Circular Dichroism、Self-Assembly、Helical Chirality

2021

[9] Donor-Acceptor Type [5]Helicene Derivative with Strong Circularly Polarized Luminescence,
Hiromu Kubo; Takashi Hirose; Daiki Shimizu; Kenji Matsuda, Chem. Lett., , 2021
DOI: 10.1246/cl.200913.

[8] Tuning Transition Electric and Magnetic Dipole Moments: [7]Helicenes Showing Intense Circularly Polarized Luminescence,
Hiromu Kubo; Takashi Hirose; Takuya Nakashima; Tsuyoshi Kawai; Jun-ya Hasegawa; Kenji Matsuda, J. Phys. Chem. Lett., 12, 1, 686 – 695, 2021
DOI: 10.1021/acs.jpclett.0c03174.

[7] Arylene–Hexaynylene and –Octaynylene Macrocycles: Extending the Polyyne Chains Drives Self-Association by Enhanced Dispersion Forces,
Shin-ichiro Kato; Ryo Kumagai; Tsukasa Abe; Chisa Higuchi; Yoshihito Shiota; Kazunari Yoshizawa; Nobutaka Takahashi; Koji Yamamoto; Md. Z. Hossain; Kazuhiro Hayashi; Takashi Hirose; Yosuke Nakamura, Chem. Commun., 57, 576 – 579, 2021
DOI: 10.1039/D0CC07540J.

[6] HOMO–LUMO Energy-Gap Tuning of π-Conjugated Zwitterions Composed of Electron-Donating Anion and Electron-Accepting Cation,
Akihiro Shimizu; Yu Ishizaki; Shun Horiuchi; Takashi Hirose; Kenji Matsuda; Hiroyasu Sato; Jun-ichi Yoshida, J. Org. Chem., 86, 1, 770 – 781, 2021
DOI: 10.1021/acs.joc.0c02343.

2020

[5] An Orifice Design: Water Insertion into C₆₀,
Yoshifumi Hashikawa; Kazuro Kizaki; Takashi Hirose; Yasujiro Murata, RSC Adv., 10, 66, 40406 – 40410, 2020
DOI: 10.1039/D0RA09067K.

[4] Circularly Polarized Luminescence Designed from Molecular Orbitals: A Figure-Eight-Shaped [5]Helicene Dimer with D₂ Symmetry,
Hiromu Kubo; Daiki Shimizu; Takashi Hirose; Kenji Matsuda, Org. Lett., 22, 23, 9276 – 9281, 2020
DOI: 10.1021/acs.orglett.0c03506.

2019

[3] Polymorphism of Porphyrin 2D Assemblies at the Liquid–Graphite Interface: Effect of Polar Solvent Additive and Flexible Spacer on the Face-On and Edge-On Type Molecular Arrangements,
Kenya Adachi; Takashi Hirose; Kenji Matsuda, Chem. Commun., 55, 8836 – 8839, 2019
DOI: 10.1039/C9CC02579K.

[2] Fabrication of Robust Spatially Resolved Photochromic Patterns on Cellulose Papers by Covalent Printing for Anticounterfeiting Applications,
Guillaume Bretel; Erwan Le Grognec; Denis Jacquemin; Takashi Hirose; Kenji Matsuda; François-Xavier Felpin, ACS Appl. Polym. Mater., 1, 5, 1240 – 1250, 2019
DOI: 10.1021/acsapm.9b00266.

[1] Self-Assembly of Photochromic Diarylethene–Peptide Conjugates Stabilized by β-Sheet Formation at the Liquid/Graphite Interface,
Nobuhiko Nishitani; Takashi Hirose; Kenji Matsuda, Chem. Commun., 55, 5099 – 5102, 2019
DOI: 10.1039/C9CC02093D.