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Yasukazu Hirao · SciRah

Researcher profile · Semantic Scholar

Yasukazu Hirao

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Yasukazu Hirao — researcher profile on SciRah

h-index: 22
Works: 92
Citations: 2,119

Most-cited papers

Synthesis and characterization of teranthene: a singlet biradical polycyclic aromatic hydrocarbon having Kekulé structures.
Akihito Konishi, Yasukazu Hirao, M. Nakano, Akihiro Shimizu +8 more
2010Journal of the American Chemical Society251 citations
Semantic Scholar
Synthesis and characterization of quarteranthene: elucidating the characteristics of the edge state of graphene nanoribbons at the molecular level.
Akihito Konishi, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata +6 more
2013Journal of the American Chemical Society203 citations
Semantic Scholar
Alternating covalent bonding interactions in a one-dimensional chain of a phenalenyl-based singlet biradical molecule having Kekulé structures.
Akihiro Shimizu, T. Kubo, M. Uruichi, K. Yakushi +9 more
2010Journal of the American Chemical Society150 citations
Semantic Scholar
Dinaphthopentalenes: pentalene derivatives for organic thin-film transistors.
T. Kawase, T. Fujiwara, C. Kitamura, Akihito Konishi +8 more
2010Angewandte Chemie140 citations
Semantic Scholar
Resonance balance shift in stacks of delocalized singlet biradicals.
Akihiro Shimizu, M. Uruichi, K. Yakushi, H. Matsuzaki +6 more
2009Angewandte Chemie136 citations
Semantic Scholar
Aromaticity and π-bond covalency: prominent intermolecular covalent bonding interaction of a Kekulé hydrocarbon with very significant singlet biradical character.
Akihiro Shimizu, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata +3 more
2012Chemical Communications101 citations
Semantic Scholar
An extremely simple dibenzopentalene synthesis from 2-bromo-1-ethynylbenzenes using nickel(0) complexes: construction of its derivatives with various functionalities.
T. Kawase, Akihito Konishi, Yasukazu Hirao, Kouzou Matsumoto +2 more
2009Chemistry98 citations
Semantic Scholar
Design and synthesis of new stable fluorenyl-based radicals.
Yiyuan Tian, Kazuyuki Uchida, Hiroyuki Kurata, Yasukazu Hirao +2 more
2014Journal of the American Chemical Society90 citations
Semantic Scholar
Synthesis, crystal structure, and physical properties of sterically unprotected hydrocarbon radicals.
T. Kubo, Yoshiki Katada, Akihiro Shimizu, Yasukazu Hirao +5 more
2011Journal of the American Chemical Society81 citations
Semantic Scholar
Dual association modes of the 2,5,8-tris(pentafluorophenyl)phenalenyl radical.
Kazuyuki Uchida, Yasukazu Hirao, Hiroyuki Kurata, T. Kubo +2 more
2014Chemistry - An Asian Journal56 citations
Semantic Scholar
Facile Synthesis and Lateral π-Expansion of Bisanthenes
Akihito Konishi, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata +1 more
201350 citations
Semantic Scholar
Theoretical consideration of singlet open-shell character of polyperiacenes using Clar's aromatic sextet valence bond model and quantum chemical calculations
Akihiro Shimizu, Yasukazu Hirao, T. Kubo, M. Nakano +2 more
201248 citations
Semantic Scholar
Intramolecular charge transfer in a star-shaped oligoarylamine.
Yasukazu Hirao, Akihiro Ito, Kazuyoshi Tanaka
2007Journal of Physical Chemistry A46 citations
Semantic Scholar
Pentaleno[1,2-c:4,5-c′]dithiophene Derivatives: First Synthesis, Properties, and a Molecular Structure
Akihito Konishi, T. Fujiwara, Noriko Ogawa, Yasukazu Hirao +5 more
201039 citations
Semantic Scholar
High-spin radical cations of a dendritic oligoarylamine.
Yasukazu Hirao, H. Ino, Akihiro Ito, Kazuyoshi Tanaka +1 more
2006Journal of Physical Chemistry A37 citations
Semantic Scholar
An N-substituted aza[14]metacyclophane tetracation: a spin-quintet tetraradical with four para-phenylenediamine-based semi-quinone moieties.
Akihiro Ito, S. Inoue, Yasukazu Hirao, K. Furukawa +2 more
2008Chemical Communications35 citations Open access
Semantic Scholar
Intramolecular spin transfer in a spiro-fused bis(triarylamine).
Yasukazu Hirao, M. Urabe, Akihiro Ito, Kazuyoshi Tanaka
2007Angewandte Chemie34 citations
Semantic Scholar
Trimacrocyclic arylamine and its polycationic states.
Akihiro Ito, Y. Yamagishi, K. Fukui, S. Inoue +4 more
2008Chemical Communications27 citations Open access
Semantic Scholar
A facile synthesis of trinaphtho[3.3.3]propellane and its π-extension and the formation of a two-dimensional honeycomb molecular assembly.
T. Kubo, S. Miyazaki, T. Kodama, Mitsuya Aoba +2 more
2015Chemical Communications24 citations
Semantic Scholar
Experimental consideration of covalent‐bonding interactions in stacks of singlet biradicals having Kekulé structures
Akihiro Shimizu, M. Nakano, Yasukazu Hirao, T. Kubo
201124 citations
Semantic Scholar
Isolation of a hydrogen-bonded complex based on the anthranol/anthroxyl pair: formation of a hydrogen-atom self-exchange system.
Yasukazu Hirao, Tohru Saito, Hiroyuki Kurata, T. Kubo
2015Angewandte Chemie22 citations
Semantic Scholar
Investigating the edge state of graphene nanoribbons by a chemical approach: Synthesis and magnetic properties of zigzag-edged nanographene molecules
Akihito Konishi, Yasukazu Hirao, Hiroyuki Kurata, T. Kubo
201322 citations
Semantic Scholar
Polycationic States of Oligoanilines Based on Wurster's Blue
Akihiro Ito, D. Sakamaki, H. Ino, Aya Taniguchi +4 more
200922 citations
Semantic Scholar
Theoretical study on thermochemistry of solvated lithium-cation with propylene carbonate
H. Ohtani, Yasukazu Hirao, Akihiro Ito, Kazuyoshi Tanaka +1 more
201020 citations
Semantic Scholar
Molecular and Spin Structures of a Through-Space Conjugated Triradical System.
T. Kodama, Mitsuya Aoba, Yasukazu Hirao, Samara Medina Rivero +2 more
2022Angewandte Chemie18 citations
Semantic Scholar
Intramolecular Interaction, Photoisomerization, and Mechanical C-C Bond Dissociation of 1,2-Di(9-anthryl)benzene and Its Photoisomer: A Fundamental Moiety of Anthracene-Based π-Cluster Molecules.
T. Nishiuchi, Shinpey Uno, Yasukazu Hirao, T. Kubo
2016Journal of Organic Chemistry18 citations
Semantic Scholar
Anthenes: Model systems for understanding the edge state of graphene nanoribbons
Akihito Konishi, Yasukazu Hirao, Hiroyuki Kurata, T. Kubo +2 more
201418 citations Open access
Semantic Scholar
Biradicaloid Behavior of a Twisted Double Bond.
Yosuke Hamamoto, Yasukazu Hirao, T. Kubo
2021Journal of Physical Chemistry Letters17 citations
Semantic Scholar
Spin-Spin Interactions in One-Dimensional Assemblies of a Cumulene-Based Singlet Biradical.
Yasukazu Hirao, Yoko Daifuku, Keiji Ihara, T. Kubo
2021Angewandte Chemie17 citations
Semantic Scholar
Synthesis and electronic structure of bisanthene: A small molecular-sized graphene with zigzag edges
Yasukazu Hirao, Akihito Konishi, Kouzou Matsumoto, Hiroyuki Kurata +1 more
201217 citations
Semantic Scholar
A Bindschedler's Green-Based Arylamine: Its Polycations with High-Spin Multiplicity
Akihiro Ito, H. Ino, Yukinori Matsui, Yasukazu Hirao +3 more
200417 citations
Semantic Scholar
Synthesis and Properties of a Through-Space Interacting Diradicaloid
T. Kodama, Yasukazu Hirao, T. Kubo
2023Precision Chemistry16 citations Open access
Semantic Scholar
Polarity-Dependent Isomerization of an Unsymmetrical Overcrowded Ethylene Promoted by Zwitterionic Contribution in the Twisted Isomer.
Yasukazu Hirao, Nobuhiro Nagamachi, Katsumasa Hosoi, T. Kubo
2018Chemistry - An Asian Journal15 citations
Semantic Scholar
Charge‐Transfer and Arrangement Effects on Delayed Photoluminescence from Phthalimide Cocrystals
Y. Kita, J. Nishida, S. Nishida, Yasunori Matsui +3 more
201812 citations
Semantic Scholar
Dynamics of Water Molecules in a 3-Fold Interpenetrated Hydrogen-Bonded Organic Framework Based on Tetrakis(4-pyridyl)methane
D. Inokuchi, Yasukazu Hirao, Kazuyuki Takahashi, Kouzou Matsumoto +2 more
2019Journal of Physical Chemistry C11 citations
Semantic Scholar
Synthesis and Photophysical Studies of Dibenzophosphole Oxides with D-A-D Triad Structures
J. Nishida, Y. Kawakami, Shun Yamamoto, Yasunori Matsui +3 more
2019Annalen der Pharmacie11 citations
Semantic Scholar
para-Phenylene-bridged spirobi(triarylamine) dimer with four perpendicularly linked redox-active π systems.
Akihiro Ito, Kazuhira Hata, Kensuke Kawamoto, Yasukazu Hirao +4 more
2010Chemistry11 citations
Semantic Scholar
Elucidation of Intramolecular Through-Space Electronic Communication in a Propeller-Shaped Molecule.
T. Kodama, Yasukazu Hirao, T. Nishiuchi, T. Kubo
2017ChemPlusChem10 citations
Semantic Scholar
Stealth fast photoswitching of negative photochromic naphthalene-bridged phenoxyl-imidazolyl radical complexes.
Katsuya Mutoh, Yoichi Kobayashi, Yasukazu Hirao, T. Kubo +1 more
2016Chemical Communications10 citations
Semantic Scholar
Radical Cation of an Oligoarylamine Having a Nitroxide Radical Substituent: A Coexistent Molecular System of Localized and Delocalized Spins.
Akihiro Ito, Ryohei Kurata, Y. Noma, Yasukazu Hirao +1 more
2016Journal of Organic Chemistry9 citations
Semantic Scholar
Synthesis of sexithiophene-bridged cage compound: a new class of three-dimensionally expanded oligothiophenes.
Kazuhiko Adachi, Yasukazu Hirao, Kouzou Matsumoto, T. Kubo +1 more
2014Organic Letters9 citations
Semantic Scholar
Structure, molecular motion, and phase transition of a highly disordered crystal [Co(NH3)6](ClO4)3
N. Górska, A. Inaba, Yasukazu Hirao, E. Mikuli +1 more
20129 citations Open access
Semantic Scholar
Synthesis and identification of a trimethylenemethane derivative pi-extended with three pyridinyl radicals.
Kouzou Matsumoto, D. Inokuchi, Yasukazu Hirao, Hiroyuki Kurata +3 more
2010Organic Letters9 citations
Semantic Scholar
The Poly(Radical Cation) of a Star‐Shaped Oligoarylamine — Detection of Excited High‐Spin States
Yasukazu Hirao, H. Ishizaki, Akihiro Ito, T. Kato +1 more
20079 citations
Semantic Scholar
Formation of Perylenes by Oxidative Dimerization of Naphthalenes Bearing Radical Sources
Yasukazu Hirao, Tomoki Okuda, Yosuke Hamamoto, T. Kubo
2019ChemPlusChem8 citations
Semantic Scholar
Shape-persistent, double-helically twisted macrocycles with two quaterphenyl moieties: Synthesis, structure and physicochemical properties for a chiral sensor
T. Kawase, Yoko Daifuku, Yasukazu Hirao, Kouzou Matsumoto +2 more
20098 citations
Semantic Scholar
Enhancing NIR-to-visible photon upconversion in cast solid by introducing bulky substituents in rubrene and by suppressing back energy transfer
A. Sawa, Shota Shimada, Neeti Tripathi, C. Heck +9 more
2023Journal of Materials Chemistry C7 citations
Semantic Scholar
Stable Singlet Biradicals of Rare-Earth-Fused Diporphyrin-Triple-Decker Complexes with Low Energy Gaps and Multi-Redox States.
Sunri Lee, K. Yamashita, N. Sakata, Yasukazu Hirao +2 more
2019Chemistry7 citations
Semantic Scholar
Hydrogen-Bonded Quartz-type Network of Diprotonated Tetrakis(4-pyridyl)methane Dications
Kouzou Matsumoto, D. Inokuchi, Yasukazu Hirao, Hiroyuki Kurata +1 more
20107 citations
Semantic Scholar
Voltammetric and in situ frequency modulation atomic force microscopic investigation of phenalenyl derivatives adsorbed on graphite surfaces
T. Utsunomiya, Y. Yokota, T. Enoki, Yasukazu Hirao +2 more
20146 citations
Semantic Scholar

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Kazuyoshi Tanaka

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Akihito Konishi×9

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