6H-[1,2,5]Thiadiazolo[3,4-e]thieno[3,2-b]indole-flanked para-azaquinodimethane based aromatic-quinoidal polymer semiconductors with high molecular weights synthesized via direct arylation polycondensation

被引：10

作者：

Xiao, Yufa ^{[1
]}

Fu, Huaijie ^{[2
]}

Li, Zefeng ^{[1
]}

Zheng, Yingxuan ^{[1
]}

Deng, Ping ^{[1
]}

Lei, Yanlian ^{[2
]}

Yu, Yan ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Mat Sci & Engn, Key Lab Adv Mat Technol, Int HongKong Macao & Taiwan,Joint Lab Adv Mat Tech, Fuzhou 350108, Fujian, Peoples R China

[2] Southwest Univ, Sch Phys Sci & Technol, Chongqing Key Lab Micro&Nano Struct Optoelect, Chongqing 400715, Peoples R China

来源：

MATERIALS ADVANCES | 2023年 / 4卷 / 08期

基金：

中国国家自然科学基金;

关键词：

PI-CONJUGATED POLYMERS; BUILDING-BLOCK; DISCOVERY;

D O I：

10.1039/d3ma00037k

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The 6H-[1,2,5]thiadiazolo[3,4-e]thieno[3,2-b]indole-flanked para-azaquinodimethane (p-AQM)-based polymer semiconductors PQ-1 and PQ-2 are rationally designed through a p-extended aromatic-quinoidal design strategy. They are synthesized by the direct arylation polycondensation (DArP) method. Their physicochemical properties are investigated. Both polymers show high number-average molecular weights of over 120 kDa. PQ-1 exhibits a narrower band gap compared to its thiophene-flanked p-AQM polymer counterpart. PQ-2, with more aromatic thiophene units in the conjugated main chains, displays a broader band gap compared to PQ-1. Both PQ-1 and PQ-2 possess high-lying highest occupied molecular orbital energy levels (about -5.0 eV). They exhibit typical p-type semiconductor characteristics according to the results of characterization of organic field-effect transistors. This work presents an alternative p-extended aromatic-quinoidal design strategy and a convenient DArP method to build new p-AQM polymer semiconductors.

引用

页码：1927 / 1934

页数：8