A01 Otsubo Kazuya

Kazuya Otsubo		Participating A01
Affiliation	Division of Chemistry, Graduate School of Science, Kyoto University
Position	Assistant Professor
Contact	kazuya@kuchem.kyoto-u.ac.jp
HP	http://kuchem.kyoto-u.ac.jp/ossc/index.html
Research Project	Investigation of physical properties in dimensional crossover complexes with asymmetric components
Abstract	Recently, we have studied synthesis and investigation of the dimensional-crossover complexes based on the one-dimensional (1D) mixed-valence transition-metal complex. We succeeded in syntheses of mixed-valence metal–organic nanotubes and triple-helix complex, which straddle between 1D and 2D electronic systems. In this project, we aim realization of the functionality in dimensional crossover complexes utilizing mixed-valence metal–organic nanotube with asymmetric components and artificial triple-helix complex. Especially, we investigate following subjects: (1) Fine-tuning of porous character, water-cluster formation and proton/water dynamics in asymmetric nanospace of metal–organic nanotube with chiral components. (2) Fabrication of chiral liquid-crystal phase showing circularly polarized luminescence and specific electronic properties utilizing artificial-triple-helix complex with controlled its helicity.
Research Areas	Inorganic Chemistry, Coordination Chemistry, Solid-State Chemistry
Keywords	Dimensional Crossover Complexes, Nanotube, Helicate

2021

[8] Surface morphology-induced spin-crossover-inactive high-spin state in a coordination framework,
Shun Sakaida; Kazuya Otsubo; Ken-ichi Otake; Shogo Kawaguchi; Mitsuhiko Maesato; Susumu Kitagawa; Hiroshi Kitagawa, Chem. Commun., 57, , 2021
DOI: 10.1039/D0CC06682F.

[7] A mixed-valent metal–organic ladder linked by pyrazine,
Ken-ichi Otake; Kazuya Otsubo; Hiroshi Kitagawa, Journal of Physics: Condensed Matter, 33, 034002, 2021
DOI: 10.1088/1361-648X/abbbc7.

2020

[6] Crystal size effect on spin-crossover behavior of {Fe(py)₂[Pt(CN)₄]} (py= pyridine) monitored by Raman spectroscopy,
Shun Sakaida; Kazuya Otsubo; Mitsuhiko Maesato; Hiroshi Kitagawa, Inorg. Chem., 59, 23, 16819 – 16823, 2020
DOI: 10.1021/acs.inorgchem.0c02874.

[5] Confined water-mediated high proton conduction in hydrophobic channel of a synthetic nanotube,
Ken-ichi Otake; Kazuya Otsubo; Tokutaro Komatsu; Shun Dekura; Jared M Taylor; Ryuichi Ikeda; Kunihisa Sugimoto; Akihiko Fujiwara; Chien-Pin Chou; Aditya Wibawa Sakti; Yoshifumi Nishimura; Hiromi Nakai; Hiroshi Kitagawa, Nat. Commun., 11, 843, 2020
DOI: 10.1038/s41467-020-14627-z.

[4] Remarkably Enhanced Proton Conduction of {NBu₂(CH₂COOH)₂}[MnCr(ox)₃] by Multiplication of Carboxyl Carrier in the Cation,
Hisashi Ōkawa; Kazuya Otsubo; Yukihiro Yoshida; Hiroshi Kitagawa, Chem. Commun., 56, 6138 – 6140, 2020
DOI: 10.1039/D0CC02192J.

2019

[3] A Novel Platinum(III)–Platinum(III) Neutral Dimer Complex, Pt₂(cdtb)₄I₂ (cdtb: 4-Cyanodithiobenzoate),
Hayato Moriyama; Kazuya Otsubo; Kentaro Aoki; Mitsuhiko Maesato; Kunihisa Sugimoto; Hiroshi Kitagawa, Chem. Lett., 48, 9, 1035 – 1037, 2019
DOI: 10.1246/cl.190355.

2018

[2] Modular Cavities: Induced Fit of Polar and Apolar Guests into Halogen-Based Receptors,
Kentaro Aoki; Kazuya Otsubo; Garry S Hanan; Kunihisa Sugimoto; Hiroshi Kitagawa, Inorg. Chem., 57, 11, 6222 – 6225, 2018
DOI: 10.1021/acs.inorgchem.8b01069.

2017

[1] Nanoscale crystalline architectures of Hofmann-type metal–organic frameworks,
Kazuya Otsubo; Tomoyuki Haraguchi; Hiroshi Kitagawa, Coord. Chem. Rev., 346, 123 – 138, 2017
DOI: 10.1016/j.ccr.2017.03.022.