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Fujiwara T, Takashika M, Hasegawa M, Ie Y, Aso Y, Aoyagi S, Otani H, Iyoda M. Small Structural Changes in the Alkyl Substituents of Macrocyclic π-Extended Thiophene Oligomers Causes a Key Effect on Their Stacking and Functional Properties. Chempluschem 2020; 84:694-703. [PMID: 31944018 DOI: 10.1002/cplu.201900062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/24/2019] [Indexed: 11/10/2022]
Abstract
Three new macrocyclic π-extended thiophene hexamers composed of four thienylene-ethynylene and two thienylene-vinylene units with or without four alkyl substituents have been synthesized. Despite similar shape-persistent structures in solution, the alkyl substituents control the solid-state structures and morphologies. The unsubstituted hexamer exhibited a planar conformation with a theoretically predicted structure in the solid state; however, the planar hexamer with four ethyl substituents formed a closely stacked columnar crystal structure to exhibit π-π interactions. Interestingly, the hexamer with four butyl substituents adopted both planar and twisted conformations in the solid state, exhibiting polymorphism based on induced-fit stacking of molecules. Thus, the butyl-substituted hexamer produces a mixture of yellow, orange, and red single crystals from toluene/acetone, and X-ray analysis revealed six different conformations. Consequently, the small structural difference in the macrocycles causes a key effect on their functional properties in the solid state, and their morphology governs electrical conductivity and organic field-effect-transistor activity. The polymorphism of the hexamers was applied to the switching of film morphology.
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Affiliation(s)
- Toshihiro Fujiwara
- Graduate School of Environment and Information Sciences, Yokohama National University Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan
| | - Masataka Takashika
- Graduate School of Environment and Information Sciences, Yokohama National University Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan
| | - Masashi Hasegawa
- School of Science, Kitasato University Sagamihara, Kanagawa, 252-0373, Japan
| | - Yutaka Ie
- The Institute of Scientific and Industrial Research, Osaka University Ibaraki, Osaka, 567-0047, Japan
| | - Yoshio Aso
- The Institute of Scientific and Industrial Research, Osaka University Ibaraki, Osaka, 567-0047, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Hiroyuki Otani
- Graduate School of Environment and Information Sciences, Yokohama National University Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan
| | - Masahiko Iyoda
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University Hachioji, Tokyo, 192-0397, Japan
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Wang D, Guo Q, Gao H, Yang Z, Cao H, He W, Wang H. Facile synthesis of functional poly(vinylene sulfide)s containing donor–acceptor chromophores by a double click reaction. RSC Adv 2016. [DOI: 10.1039/c6ra05000j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The new electronically active poly(vinylene sulfide)s containing dialkylaniline-substituted electron-rich alkynes in the side chains were designed and synthesized by the ‘thiol-click’ polymerization.
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Affiliation(s)
- Dong Wang
- Department of Materials Physics and Chemistry
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Qingsen Guo
- Department of Materials Physics and Chemistry
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Hong Gao
- Division of Material Engineering
- China Academy of Space Technology
- Beijing 100094
- PR China
| | - Zhou Yang
- Department of Materials Physics and Chemistry
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Hui Cao
- Department of Materials Physics and Chemistry
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Wanli He
- Department of Materials Physics and Chemistry
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Huihui Wang
- Department of Materials Physics and Chemistry
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
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