Naphthodithiophene-diketopyrrolopyrrole-based donor-acceptor alternating π-conjugated polymers for organic thin-film transistors

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

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Novel naphtho[1,2-b:5,6-b′]dithiophene (NDT) and diketopyrrolopyrrole (DPP)-containing donor-acceptor conjugated polymers (PNDTDPPs) with different branched side chains were synthesized via Pd(0)-catalyzed Stille coupling reaction. Octyldodecyl (OD) and dodecylhexadecyl (DH) groups were tethered to the DPP units as the side chains. The soluble fraction of PNDTDPP-OD polymer in chloroform has much lower molecular weight than that of PNDTDPP-DH polymer. PNDTDPP-DH polymer bearing relatively longer DH side chains exhibited much better charge-transport behavior than PNDTDPP-OD polymer with shorter OD side chains. The thermally annealed PNDTDPP-DH polymer thin films exhibited an outstanding charge carrier mobility of ∼1.32 cm2 V-1 s-1 (Ion/Ioff ∼ 108) measured under ambient conditions, which is almost six times higher than that of thermally annealed PNDTDPP-OD polymer thin films.

Original languageEnglish
Pages (from-to)5280-5290
Number of pages11
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume51
Issue number24
DOIs
Publication statusPublished - 2013 Dec 15

Fingerprint

Conjugated polymers
Thin film transistors
Polymers
Polymer films
Bearings (structural)
Thin films
Carrier mobility
Chloroform
Chlorine compounds
Nondestructive examination
Charge carriers
Charge transfer
Molecular weight
Ions

Keywords

  • charge transfer
  • conjugated polymers
  • copolymer
  • diketopyrrolopyrrole
  • films
  • naphtodithiophene
  • organic thin-film transistor
  • semiconductor
  • synthesis
  • thin films

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry

Cite this

Naphthodithiophene-diketopyrrolopyrrole-based donor-acceptor alternating π-conjugated polymers for organic thin-film transistors. / Lee, Tae Wan; Lee, Dae Hee; Shin, Jicheol; Cho, Min Ju; Choi, Dong Hoon.

In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 51, No. 24, 15.12.2013, p. 5280-5290.

Research output: Contribution to journalArticle

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