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- Title
Thiazole Imide‐Based All‐Acceptor Homopolymer with Branched Ethylene Glycol Side Chains for Organic Thermoelectrics.
- Authors
Shi, Yongqiang; Li, Jianfeng; Sun, Hengda; Li, Yongchun; Wang, Yimei; Wu, Ziang; Jeong, Sang Young; Woo, Han Young; Fabiano, Simone; Guo, Xugang
- Abstract
n‐Type semiconducting polymers with high thermoelectric performance remain challenging due to the scarcity of molecular design strategy, limiting their applications in organic thermoelectric (OTE) devices. Herein, we provide a new approach to enhance the OTE performance of n‐doped polymers by introducing acceptor‐acceptor (A‐A) type backbone bearing branched ethylene glycol (EG) side chains. When doped with 4‐(2,3‐dihydro‐1,3‐dimethyl‐1H‐benzimidazol‐2‐yl)‐N,N‐dimethylbenzenamine (N‐DMBI), the A‐A homopolymer PDTzTI‐TEG exhibits n‐type electrical conductivity (σ) up to 34 S cm−1 and power factor value of 15.7 μW m−1 K−2. The OTE performance of PDTzTI‐TEG is far greater than that of homopolymer PBTI‐TEG (σ=0.27 S cm−1), indicating that introducing electron‐deficient thiazole units in the backbone further improves the n‐doping efficiency. These results demonstrate that developing A‐A type polymers with EG side chains is an effective strategy to enhance n‐type OTE performance.
- Subjects
ETHYLENE glycol; ELECTRIC conductivity; DOPING agents (Chemistry); BISMUTH telluride; THIAZOLES; SPINE; POLYMERS
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 51, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202214192