Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Thiophene backbone-based polymers with electron-withdrawing pendant groups for application in organic thin-film transistors

Abstract

Two thiophene backbone-based hole-transporting poly-mers, namely, poly[(2,2'-bithiophene-5,5'-diyl)-alt-(5,7-bis(2-butyloctyl)-4H,8H-benzo[1,2-c:4,5-c']dithiophene-4,8-dione-1,3-diyl)] (PT2-BDD) and poly[(3,3'-difluoro-[2,2'-bithiophene]-5,5'-diyl)-alt-(5,7-bis(2-butyloctyl)-4H,8H-benzo[1,2-c:4,5-c']dithiophene-4,8-dione-1,3-diyl)] (PF2-BDD), were pre-pared by using electron-withdrawing pendant groups such as ketone and fluorine moieties. They both exhibited a planar backbone with effi-cient π conjugation, which is suitable for hole transport in organic thin-film transistors (OTFTs). However, the fluori-nated one (i.e., PF2-BDD), de-spite its perfect backbone planarity and strong intra- and intermolecular interactions, could not enhance the OTFT performance; due to its sol-vent resistance, electron neg-ativity, and random orienta-tion, PF2-BDD showed 10 times lower hole mobility than the non-fluorinated polymer (i.e., PT2-BDD). Nonetheless, the two-dimensional grazing incidence X-ray diffraction and temperature-dependent absorption spectra of the syn-thesized polymers provided crucial information to under-stand the relationship be-tween their hole transport behavior and molecular struc-ture.

Back to tab navigation

Supplementary files

Article information


Submitted
04 Mar 2020
Accepted
11 May 2020
First published
12 May 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Thiophene backbone-based polymers with electron-withdrawing pendant groups for application in organic thin-film transistors

M. Jeong, K. Lee, J. Kang, J. Jang and I. H. Jung, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/D0NJ01080D

Social activity

Search articles by author

Spotlight

Advertisements