Work

Extrinsic n-Doping of a Double B←N Bridged Bipyridine-Based Polymer Containing Oligoethylene Glycol Side Chains

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Organic mixed ionic-electronic conductor (OMIEC) polymers with the ability of mixed charge transport have been widely used in organic electronic devices, such as organic thermoelectric transistors (OTEs) and organic electrochemical transistors (OECTs). The development of an n-type OMIEC remains a grand challenge. Herein, a double B←N bridged bipyridine unit with strong electron deficiency is used to build acceptor-acceptor type conjugated polymers (PBN-alkyl and PBN-OEG). PBN-OEG with oligoethylene glycol side chains exhibits weaker crystallinity, improved doping efficiency, and superior ion uptake capacity relative to the counterpart polymer with alkyl side chains. As a result, PBN-OEG exhibits a higher conductivity of 1.95 S cm –1, a better power factor of 4.7 μW m –1 K –2 in OTEs, and a large μ C* of 2.6 F cm –1 V –1 s –1 in OECTs. Such results demonstrate the great potential of acceptor-acceptor type organoboron polymers for OMIEC materials.

Source: Polymer science & technology.

DOI: 10.1021/polymscitech.5c00042

Authors: Mingyu Ma, Linlong Zhang, Tangqing Yao, Huanzhou Yang, Jian Liu, Jun Liu

Institutions: University of Science and Technology of China, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry

Language: English

Topic: Conducting polymers and applications

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Jilin Scientific and Technological Development Program, National Science Fund for Distinguished Young Scholars

Awards: G1002452145, G1426561198