π-Conjugated polymers derived from 2,5-bis(2-decyltetradecyl)-3,6-di(selenophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione for high-performance thin film transistors

Tae Wan Lee, Dae Hee Lee, Jicheol Shin, Min Ju Cho, Dong Hoon Choi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Novel 2,5-bis(2-decyltetradecyl)-3,6-di(selenophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (DSDPP)-containing conjugated polymers with different donor monomers were synthesized via a Pd(0)-catalyzed Stille coupling reaction. Solubilized 2-decyltetradecyl (DT) groups were tethered to the N-atoms in diketopyrrolopyrrole (DPP). As electron-donating units, bithiophene (BT) and a π-extended (E)-2-(2-(thiophen-2-yl)vinyl)thiophene (TVT) were introduced into the polymer backbone. Besides thiophene-based monomers, biselenophene (BS) and (E)-2-(2-(selenophen-2-yl)vinyl)selenophene (SVS) were also copolymerized with the same DSDPP-based monomer. DSDPP-BS and DSDPP-SVS copolymers exhibited higher hole mobilities in thin film transistors (TFTs) than the corresponding BT and TVT analogs. In particular, a TFT having a DSDPP-SVS copolymer-based active layer showed the highest hole mobility of ∼5.23 cm2 V-1 s-1 and high current on/off ratios of ∼107; this indicates that the π-extended SVS significantly improves charge transport properties.

Original languageEnglish
Pages (from-to)1777-1785
Number of pages9
JournalPolymer Chemistry
Volume6
Issue number10
DOIs
Publication statusPublished - 2015 Mar 14

Fingerprint

Thiophenes
Pyrroles
Conjugated polymers
Thin film transistors
Polymers
Hole mobility
Monomers
Thiophene
Copolymers
Electrons
Transport properties
Charge transfer
Atoms

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Biochemistry
  • Biomedical Engineering
  • Bioengineering

Cite this

π-Conjugated polymers derived from 2,5-bis(2-decyltetradecyl)-3,6-di(selenophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione for high-performance thin film transistors. / Lee, Tae Wan; Lee, Dae Hee; Shin, Jicheol; Cho, Min Ju; Choi, Dong Hoon.

In: Polymer Chemistry, Vol. 6, No. 10, 14.03.2015, p. 1777-1785.

Research output: Contribution to journalArticle

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