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Abstract This study introduces a benzodithiophene‐S,S‐tetraoxide (BDTT) monomer as an acceptor and 3,4‐ethylenedioxythiophene flanked thiophene (TEDOT2) and terthiophene (T3) as donor molecules for polymer formation. The synthesis of thepoly(TEDOT2‐BDTT)andpoly(T3‐BDTT)copolymers was performed via a single‐step monomer radical formation that is typically associated with electropolymerization methods. The electropolymerization is controlled by using a suitable monomer stoichiometric ratio that enables the deposition of copolymer thin films on the working electrode. Resultant copolymers were investigated by electrochemical analysis and their electronic properties are discussed in detail. A low average electron transport resistance of 16.5 Ω was found forpoly(TEDOT2‐BDTT), indicating excellent conductive behavior. Solid‐state absorbance and emission studies of the copolymers show visible to near‐infrared spectral activity. Results support an effective strategy towards highly efficient electronically conducting polymers (ECPs) based on a unique BDTT monomer.
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The Direct Arylation Polymerization (DArP) of Well‐Defined Alternating Copolymers Based On 5,6‐Dicyano[2,1,3]benzothiadiazole (DCBT)
Abstract Alternating donor–acceptor copolymers are important materials with readily tunable optical and electronic properties. Direct arylation polymerization (DArP) is emerging as an attractive synthetic methodology for the synthesis of these polymers, avoiding the use of prefunctionalized building blocks. However, challenges remain in achieving well‐defined structure, high molecular weight, and impurity‐free polymers. Herein, a study to synthesize three well‐defined donor–acceptor copolymers through DArP is presented. Comparison of1H NMR and13C NMR, as well as optical and electrochemical properties analysis for the polymers and corresponding oligomers provides evidence for the regioregular structure of the polymers. On the basis of the chemical structure of poly(IIDCBT) and the solution electrochemical studies we surmised poly(IIDCBT) could potentially be an electron transport material for organic field‐effect transistors (OFETs), and we determined an electron mobility of 1.2×10−3 cm2 V−1 s−1for this material.
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- Award ID(s):
- 1700982
- PAR ID:
- 10061733
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Asian Journal of Organic Chemistry
- Volume:
- 7
- Issue:
- 7
- ISSN:
- 2193-5807
- Page Range / eLocation ID:
- p. 1419-1425
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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