Synthetic strategy for thienothiophene-benzotriazole-based polymers with high backbone planarity and solubility for field-effect transistor applications
- Title
- Synthetic strategy for thienothiophene-benzotriazole-based polymers with high backbone planarity and solubility for field-effect transistor applications
- Author
- 장재영
- Keywords
- Organic field-effect transistor (OFET); Siloxane-terminated side chain; Thienothiophene; Benzotriazole; Conformational locking; Solubility
- Issue Date
- 2020-06
- Publisher
- ELSEVIER SCIENCE INC
- Citation
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v. 86, page. 150-157
- Abstract
- We report on a synthetic strategy for a series of thienothiophene-benzotriazole-based polymers-octyl-PTTBTz-F, Si-PTTBTz, and Si-PTTBTz-F-wherein conformational locks are introduced to induce intra- and intermolecular interactions (F center dot center dot center dot S, F center dot center dot center dot H-C, and C-F center dot center dot center dot pi(F)) for high backbone planarity and siloxane-terminated side chains are introduced to increase solubility. The three polymers were utilized as active layers in organic field-effect transistors, and the effects of thermal annealing on the polymer crystallinity and device performances were studied. Although the fluorine-atom-substituted octyl-PTTBTz-F showed a moderate hole mobility of up to 4.2 x 10(-3) cm(2) V-1 s(-1) with enhanced molecular orientation because of conformational locks, it had poor solubility in common organic solvents. The Si-PTTBTz polymer with the siloxane-terminated side chains showed good solubility but inferior device performance with a hole mobility of up to 2.2 x 10(-4) cm(2) V-1 s(-1). The rationally designed Si-PTIBTz-F polymer, which contains both fluorine atoms in the backbone and siloxane-terminated groups in the side chains, showed an excellent hole mobility of up to 0.11 cm(2) V-1 s(-1) and good solubility in common organic solvents. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S1226086X20301015?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/167387
- ISSN
- 1226-086X; 1876-794X
- DOI
- 10.1016/j.jiec.2020.02.022
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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