Molecular Weight-Dependent Oxidation and Optoelectronic Properties of Defect-Free Macrocyclic Poly(3-hexylthiophene)

Sato, Ryohei; Utagawa, Atsuo; Fushimi, Koji; Li, Feng; Isono, Takuya; Tajima, Kenji; Satoh, Toshifumi; Sato, Shin-ichiro; Hirata, Hiroshi; Kikkawa, Yoshihiro; Yamamoto, Takuya

Molecular Weight-Dependent Oxidation and Optoelectronic Properties of Defect-Free Macrocyclic Poly(3-hexylthiophene)

Sato, Ryohei; Utagawa, Atsuo; Fushimi, Koji et al.

Polymers, 2023, 15(3), 666

Permalink : https://hdl.handle.net/2115/88580

このアイテムのアクセス数:251件（2026-01-17 20:06 集計）

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https://doi.org/10.3390/polym15030666

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アクセス権	metadata only access
URI	https://hdl.handle.net/2115/88580
タイトル	Molecular Weight-Dependent Oxidation and Optoelectronic Properties of Defect-Free Macrocyclic Poly(3-hexylthiophene)
著者	Sato, Ryohei ; Utagawa, Atsuo ; Fushimi, Koji ; Li, Feng ; Isono, Takuya ; Tajima, Kenji ; Satoh, Toshifumi ; Sato, Shin-ichiro ; Hirata, Hiroshi ; Kikkawa, Yoshihiro ; Yamamoto, Takuya
著者名 Sato, Ryohei
著者名 Utagawa, Atsuo
e-Rad_Researcher 20271645 著者名 Fushimi, Koji
著者名 Li, Feng
著者名 Isono, Takuya
e-Rad_Researcher 00271643 著者名 Tajima, Kenji
e-Rad_Researcher 80291235 著者名 Satoh, Toshifumi
e-Rad_Researcher 10262601 著者名 Sato, Shin-ichiro
e-Rad_Researcher 60250958 著者名 Hirata, Hiroshi
著者名 Kikkawa, Yoshihiro
e-Rad_Researcher 30525986 著者名 Yamamoto, Takuya
言語	英語
キーワード	cyclic polymer
	poly(3-hexylthiophene)
	molecular weight dependence
	oxidation
	polaron
	biradical
	dication
	cyclic voltammetry
	UV-Vis-NIR spectroscopy
	ESR spectroscopy
発行日	2023-01-28
出版者	MDPI
収録物名	Polymers
巻(号)	15(3)
ページ	666
抄録	The redox behaviors of macrocyclic molecules with an entirely pi-conjugated system are of interest due to their unique optical, electronic, and magnetic properties. In this study, defect-free cyclic P3HT with a degree of polymerization (DPn) from 14 to 43 was synthesized based on our previously established method, and its unique redox behaviors arising from the cyclic topology were investigated. Cyclic voltammetry (CV) showed that the HOMO level of cyclic P3HT decreases from -4.86 eV (14 mer) to -4.89 eV (43 mer), in contrast to the linear counterparts increasing from -4.94 eV (14 mer) to -4.91 eV (43 mer). During the CV measurement, linear P3HT suffered from electro-oxidation at the chain ends, while cyclic P3HT was stable. ESR and UV-Vis-NIR spectroscopy suggested that cyclic P3HT has stronger dicationic properties due to the interactions between the polarons. On the other hand, linear P3HT showed characteristics of polaron pairs with multiple isolated polarons. Moreover, the dicationic properties of cyclic P3HT were more pronounced for the smaller macrocycles.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3390/polym15030666