研究者詳細 - 岡本　秀毅

論文 - 岡本　秀毅

分割表示 105 件中 21 - 40 件目／全件表示 >>

Roto‐Cyclization of 4‐Bromopicene in On‐Surface Synthesis 査読国際共著国際誌

19 ( 22 ) e202400620 2024年10月

Vertical Intermolecular Electronic Communication in Dibenzo[6]phenacene on Ag(111) 査読国際共著国際誌

128 ( 33 ) 14065 - 14074 2024年8月

Intramolecular [π4s + π4s] photocycloaddition of carbon- and nitrogen-bridged [32](1,4)naphthalenophanes 査読国際誌

Yukiko Oguma, Masanori Yamamoto, Yukinari Sunatsuki, Hiromi Ota, Minoru Yamaji, Hideki Okamoto

Photochemical & Photobiological Sciences 23 ( 8 ) 1509 - 1519 2024年7月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Springer Science and Business Media LLC

Abstract

[3₂](1,4)Naphthalenophanes, bearing carbon-bridge chains (syn- and anti-NPs) and nitrogen-bridge chains (syn- and anti-ANPs), were synthesized, and their X-ray structures and photoreactions were investigated. The intramolecular separation distance between the naphthalene cores for ANPs was shorter than that for NPs, suggesting that intramolecular interactions between the naphthalene rings were more efficient for ANPs compared to NPs. Upon photoirradiation at 300 nm, anti-NP, syn-ANP and anti-ANP produced the corresponding intramolecular [π4s + π4s] cycloadducts, whereas syn-NP gave an unidentified complex product mixture. Quantum yields for the photo-consumption (Φ_PC) of NPs and ANPs were evaluated to quantitatively compare their photoreactivity. The Φ_PC values of ANPs were approximately two-fold higher than those of ANPs.Noteworthily, the Φ_PC value of syn-ANP was estimated to be unity. Based on these results we discuss the effects of the alignments of the naphthalene cores (antivs. syn) and the bridging elements (C-bridge vs. N-bridge) on the photoreaction efficiencies of [3₂](1,4)naphthalenophanes.

DOI： 10.1007/s43630-024-00610-w

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その他リンク： https://link.springer.com/article/10.1007/s43630-024-00610-w/fulltext.html

Photochemical synthesis and solvatochromic fluorescence behavior of imide-fused phenace 査読国際誌

452 115613 - 115613 2024年7月

Coulomb Scattering Controlled by Ionized Molecules Adsorbed on Graphene 査読国際誌

128 ( 1 ) 467 - 473 2023年12月

Star-burst polycyclic aromatic hydrocarbons prepared by multi-photocyclization and the photophysical features 査読国際誌

Minoru Yamaji, Hideki Okamoto

Journal of Photochemistry and Photobiology A: Chemistry 436 114387 - 114387 2023年3月

Solvent-dependent fluorescence behaviour of imide-fused [n]phenacenes (n = 3, 5, 7) 査読国際誌

13 ( 6 ) 4096 - 4101 2023年

Charge Transport Capabilities of Dibenzo[n]phenacenes (n = 5–7): Influence of Trap States and Molecular Packing 査読

Yanting Zhang, Shino Hamao, Hidenori Goto, Yoshihiro Kubozono, Hideki Okamoto, Kunihisa Sugimoto, Nobuhiro Yasuda, Akihiko Fujiwara, Ritsuko Eguchi

The Journal of Physical Chemistry C 126 ( 44 ) 18849 - 18854 2022年10月

Evaluation of Effective Field-Effect Mobility in Thin-Film and Single-Crystal Transistors for Revisiting Various Phenacene-Type Molecules 査読国際誌

Yanting Zhang, Ritsuko Eguchi, Shino Hamao, Hideki Okamoto, Hidenori Goto, Yoshihiro Kubozono

ACS OMEGA 7 ( 6 ) 5495 - 5501 2022年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

The magnitude of the field-effect mobility mu of organic thin-film and single-crystal field-effect transistors (FETs) has been over-estimated in certain recent studies. These reports set alarm bells ringing in the research field of organic electronics. Herein, we report a precise evaluation of the mu values using the effective field-effect mobility, mu(eff), a new indicator that is recently designed to prevent the FET performance of thin-film and single-crystal FETs based on various phenacene molecules from being overestimated. The transfer curves of a range of FETs based on phenacene are carefully categorized on the basis of a previous report. The exact evaluation of the value of mu(eff) depends on the exact classification of each transfer curve. The transfer curves of all our phenacene FETs could be successfully classified based on the method indicated in the aforementioned report, which made it possible to evaluate the exact value of mu(eff) for each FET. The FET performance based on the values of mu(eff) obtained in this study is discussed in detail. In particular, the mu(eff) values of single-crystal FETs are almost consistent with the mu values that were reported previously, but the mu(eff) values of thin-film FETs were much lower than those previously reported for mu, owing to a high absolute threshold voltage, vertical bar V-th vertical bar. The increase in the field-effect mobility as a function of the number of benzene rings, which was previously demonstrated based on the mu values of single-crystal FETs with phenacene molecules, is well reproduced from the mu(eff) values. The FET performance is discussed based on the newly evaluated mu(eff) values, and the future prospects of using phenacene molecules in FET devices are demonstrated.

DOI： 10.1021/acsomega.1c06932

Web of Science

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Fabrication and characterization of thin-film field-effect transistors with alkyl-phenyl[n]phenacenes (n = 4–6) 査読

Yanting Zhang, Ritsuko Eguchi, Hideki Okamoto, Kenta Goto, Fumito Tani, Minoru Yamaji, Hidenori Goto, Yoshihiro Kubozono

Journal of Materials Chemistry C 10 ( 43 ) 16309 - 16320 2022年

Synthesis of 2,3-Anthracenedicarboxylic-acid-derived Fluorophore and Chemiluminophore Incorporating Dipicolylaminomethyl Receptors, and Their Luminescence Responses to Metal Ions 査読

Hideki Okamoto, Naomi Yamazaki, Ayako Matsui, Kyosuke Satake

HETEROCYCLES 104 ( 9 ) 1614 - 1614 2022年

Solid-state photoluminescence of biaryls: Relationship between photophysical feature and crystal structure 査読国際誌

Minoru Yamaji, Hideki Okamoto, Kenta Goto, Fumito Tani

Journal of Photochemistry and Photobiology A: Chemistry 421 113518 - 113518 2021年12月

Fabrication of ring oscillators using organic molecules of phenacene and perylenedicarboximide 査読国際共著国際誌

Niko Fioravanti, Luca Pierantoni, Davide Mencarelli, Claudio Turchetti, Shino Hamao, Hideki Okamoto, Hidenori Goto, Ritsuko Eguchi, Akihiko Fujiwara, Yoshihiro Kubozono

RSC Advances 11 ( 13 ) 7538 - 7551 2021年

Synthesis and photophysical properties of blue-color emitting compounds having multi N-methylanthranillic (MANT) chromophore 査読国際誌

Minoru Yamaji, Kanae Sano, Hideki Okamoto, Ichiro Matsuo

Journal of Photochemistry and Photobiology A: Chemistry 400 112650 - 112650 2020年9月

Facile synthesis of picenes incorporating imide moieties at both edges of the molecule and their application to n-channel field-effect transistors 査読国際誌

Yuxin Guo, Kaito Yoshioka, Shino Hamao, Yoshihiro Kubozono, Fumito Tani, Kenta Goto, Hideki Okamoto

RSC Advances 10 ( 52 ) 31547 - 31552 2020年

Low-voltage organic thin-film transistors based on [n]phenacenes 査読国際共著国際誌

Afra Al Ruzaiqi, Hideki Okamoto, Yoshihiro Kubozono, Ute Zschieschang, Hagen Klauk, Peter Baran, Helena Gleskova

Organic Electronics 73 286 - 291 2019年10月

Fluorescence properties of amido-substituted 2,3-naphthalimides: Excited-state intramolecular proton transfer (ESIPT) fluorescence and responses to Ca2+ ions 査読国際誌

Lei Wang, Mayu Fujii, Misa Namba, Minoru Yamaji, Hideki Okamoto

Tetrahedron Letters 60 ( 43 ) 151189 - 151189 2019年10月

Distinctive effects on fluorescence quantum yields of 4-substituted N-methylphthalimides by inclusion complexation with β-cyclodextrins 査読

Yoshimi Sueishi, Yuki Matsumoto, Junko Sohama, Yoshihiro Osawa, Hideki Okamoto

Journal of Inclusion Phenomena and Macrocyclic Chemistry 93 ( 3-4 ) 275 - 281 2019年4月

Transistor Application and Intercalation Chemistry of π-Conjugated Hydrocarbon Molecules

Yoshihiro Kubozono, Shino Hamao, Takahiro Mikami, Yuma Shimo, Yasuhiko Hayashi, Hideki Okamoto

Physics and Chemistry of Carbon-Based Materials 229 - 252 2019年

Blue fluorescence from N,O-coordinated BF2 complexes having aromatic chromophores in solution and the solid state 査読国際誌

Minoru Yamaji, Kazuhiro Tomonari, Keisuke Ikuma, Kenta Goto, Fumito Tani, Hideki Okamoto

Photochemical & Photobiological Sciences 18 ( 12 ) 2884 - 2892 2019年

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