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Unidirectional Macroscopic Alignment of Chlorobenzo[c]‐[1,2,5]thiadiazole‐Based Semiconducting Copolymers with Controlled Regiochemistry.

Authors :
Chung, Sein
Cho, Yongjoon
Kim, Jinsung
Lee, Seon Baek
Park, Chaneui
Kim, Seunghyun
Kang, Boseok
Yang, Changduk
Cho, Kilwon
Source :
Advanced Electronic Materials; Nov2021, Vol. 7 Issue 11, p1-11, 11p
Publication Year :
2021

Abstract

Solution‐processable donor–acceptor‐type conjugated copolymers are considered one of the most promising alternatives to inorganic semiconductors. The introduction of strong electron‐withdrawing groups in the acceptor units of the copolymers has been shown to favor fast charge transport; however, the correlation among the halogen‐substituted molecular structure, solid‐state packing, and charge transport properties is unclear. In this study, new chlorine‐atom‐substituted donor–acceptor copolymers comprising chlorobenzo[c]‐[1,2,5]thiadiazole and 4,4‐dihexadecyl‐4H‐cyclopenta[1,2‐b:5,4‐b′]dithiophene are synthesized and their physicochemical properties are compared with those of their unsubstituted or nitrogen‐incorporated backbone analogs. In addition, the regioregularity of the synthesized copolymers is controlled to investigate the effects of regiochemistry on the polymer backbone alignment using the nanogroove method. The results demonstrate that different degrees of regioregularity in the main chains induce a substantially dissimilar effect of the nanogroove and capillary force on the orientation of the polymer backbone, long‐range crystalline order, and charge transport properties of the conjugated polymers. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
2199160X
Volume :
7
Issue :
11
Database :
Complementary Index
Journal :
Advanced Electronic Materials
Publication Type :
Academic Journal
Accession number :
153495392
Full Text :
https://doi.org/10.1002/aelm.202100551