A Distannylated Monomer of a Strong Electron-Accepting Organoboron Building Block: Enabling Acceptor-Acceptor-Type Conjugated Polymers for n-Type Thermoelectric Applications

被引：89

作者：

Dong, Changshuai ^{[1
,2
]}

Deng, Sihui ^{[1
,2
]}

Meng, Bin ^{[1
]}

Liu, Jun ^{[1
,2
]}

Wang, Lixiang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

[2] Univ Sci & Technol China, Hefei 230026, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2021年 / 60卷 / 29期

基金：

中国国家自然科学基金;

关键词：

acceptor-acceptor conjugated polymers; conducting materials; doping; organic thermoelectrics; organoboron polymers; STRUCTURE-PROPERTY CORRELATIONS; SEMICONDUCTORS SYNTHESIS; SOLAR-CELLS; UNIT; DONOR; COPOLYMERS; AFFINITY; DESIGN;

D O I：

10.1002/anie.202105127

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Acceptor-acceptor (A-A) copolymerization is an effective strategy to develop high-performance n-type conjugated polymers. However, the development of A-A type conjugated polymers is challenging due to the synthetic difficulty. Herein, a distannylated monomer of strong electron-deficient double B <- N bridged bipyridine (BNBP) unit is readily synthesized and used to develop A-A type conjugated polymers by Stille polycondensation. The resulting polymers show ultralow LUMO energy levels of -4.4 eV, which is among the lowest value reported for organoboron polymers. After n-doping, the resulting polymers exhibit electric conductivity of 7.8 S cm(-1) and power factor of 24.8 mu W m(-1) K-2. This performance is among the best for n-type polymer thermoelectric materials. These results demonstrate the great potential of A-A type organoboron polymers for high-performance n-type thermoelectrics.

引用

页码：16184 / 16190

页数：7

共 67 条

[1] π-Extended Naphthalene Diimide Derivatives for n-Type Semiconducting Polymers [J].