Synthesis of novel conjugated polymers based on benzo[1,2-: D:4,5- d ′]-bis([1,2,3]triazole) for applications in organic field-effect transistors

Yao Ming Yeh, Chiao Hui Huang, Shih Hao Peng, Chia-Chih Chang*, Chain-Shu Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Novel donor-acceptor (D-A) conjugated polymers based on 4,8-bis(5-bromothiophen-2-yl)-2,6-bis(2-octyldodecyl)-2H-benzo[1,2-d:4,5-d′]- bis([1,2,3]triazole)-6-ium-5-ide (BTBBTa) combined with three different electron-donating monomers bithiophene (BT), thieno[3,2-b]thiophene (TT), (E)-2-[2-(thiophen-2yl)vinyl]thiophene (TVT) were synthesized. By replacing the sulfur atoms on benzobisthiadiazole with nitrogen atoms, benzobistriazole (BBTa) can possess alkyl chains on the central nitrogen atoms rather than on the thiophene rings along the polymer chain, which can reduce the steric hindrance between neighboring monomers and increase the planarity of polymers. The optical, thermal and electrochemical properties of the polymers were characterized, respectively. DFT calculations were used to calculate the optimized geometries of polymer backbones. The thin film microstructures of the polymers were characterized by using GIWAXS and AFM. In these novel polymers, PBTBBTa-BT displayed the highest hole mobility of 0.21 cm2 V-1 s-1.

Original languageEnglish
Pages (from-to)1471-1479
Number of pages9
JournalPolymer Chemistry
Volume10
Issue number12
DOIs
StatePublished - 28 Mar 2019

Fingerprint

Dive into the research topics of 'Synthesis of novel conjugated polymers based on benzo[1,2-: D:4,5- d ′]-bis([1,2,3]triazole) for applications in organic field-effect transistors'. Together they form a unique fingerprint.

Cite this