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Thiazole Imide-Based All-Acceptor Homopolymer with Branched Ethylene Glycol Side Chains for Organic Thermoelectrics.

Authors :
Shi Y
Li J
Sun H
Li Y
Wang Y
Wu Z
Jeong SY
Woo HY
Fabiano S
Guo X
Source :
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2022 Dec 19; Vol. 61 (51), pp. e202214192. Date of Electronic Publication: 2022 Nov 21.
Publication Year :
2022

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 <superscript>-1</superscript> and power factor value of 15.7 μW m <superscript>-1</superscript>  K <superscript>-2</superscript> . The OTE performance of PDTzTI-TEG is far greater than that of homopolymer PBTI-TEG (σ=0.27 S cm <superscript>-1</superscript> ), 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.<br /> (© 2022 Wiley-VCH GmbH.)

Details

Language :
English
ISSN :
1521-3773
Volume :
61
Issue :
51
Database :
MEDLINE
Journal :
Angewandte Chemie (International ed. in English)
Publication Type :
Academic Journal
Accession number :
36282628
Full Text :
https://doi.org/10.1002/anie.202214192