High mobility isoindigo-based π-extended conjugated polymers bearing di(thienyl)ethylene in thin-film transistors

Jicheol Shin; Hyun Ah Um; Dae Hee Lee; Tae Wan Lee; Min Ju Cho; Dong Hoon Choi

doi:10.1039/c3py00735a

High mobility isoindigo-based π-extended conjugated polymers bearing di(thienyl)ethylene in thin-film transistors

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

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

Abstract

New isoindigo and di(thienyl)ethylene-containing π-extended conjugated polymers with different branched side-chains and molecular weights (MWs) have been synthesized. Octyldodecyl (OD) and decyltetradecyl (DT) groups were employed as side chain moieties tethered to isoindigo units. In addition, the MW of the polymer was varied by changing the polymerization time. The polymers bearing DT side chains showed much better charge transport behavior, compared to that of polymers with OD side chains. The hole mobility of high-MW PIIDDTE-III with DT side-chains was determined to be higher than that of the low-MW polymer, PIIDDTE-II with identical side-chains. The thermally annealed film of PIIDDTE-III exhibited outstanding hole mobilities of ∼2.20 cm² V^-1 s^-1 measured under ambient conditions. This work unambiguously demonstrates the effect of the branched side-chain bulkiness and MW on the thin film transistor (TFT) performances.

Original language	English
Pages (from-to)	5688-5695
Number of pages	8
Journal	Polymer Chemistry
Volume	4
Issue number	23
DOIs	https://doi.org/10.1039/c3py00735a
Publication status	Published - 2013 Dec 7

ASJC Scopus subject areas

Bioengineering
Biochemistry
Polymers and Plastics
Organic Chemistry

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title = "High mobility isoindigo-based π-extended conjugated polymers bearing di(thienyl)ethylene in thin-film transistors",

abstract = "New isoindigo and di(thienyl)ethylene-containing π-extended conjugated polymers with different branched side-chains and molecular weights (MWs) have been synthesized. Octyldodecyl (OD) and decyltetradecyl (DT) groups were employed as side chain moieties tethered to isoindigo units. In addition, the MW of the polymer was varied by changing the polymerization time. The polymers bearing DT side chains showed much better charge transport behavior, compared to that of polymers with OD side chains. The hole mobility of high-MW PIIDDTE-III with DT side-chains was determined to be higher than that of the low-MW polymer, PIIDDTE-II with identical side-chains. The thermally annealed film of PIIDDTE-III exhibited outstanding hole mobilities of ∼2.20 cm2 V-1 s-1 measured under ambient conditions. This work unambiguously demonstrates the effect of the branched side-chain bulkiness and MW on the thin film transistor (TFT) performances.",

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AU - Shin, Jicheol

AU - Um, Hyun Ah

AU - Lee, Dae Hee

AU - Lee, Tae Wan

AU - Cho, Min Ju

AU - Choi, Dong Hoon

PY - 2013/12/7

Y1 - 2013/12/7

N2 - New isoindigo and di(thienyl)ethylene-containing π-extended conjugated polymers with different branched side-chains and molecular weights (MWs) have been synthesized. Octyldodecyl (OD) and decyltetradecyl (DT) groups were employed as side chain moieties tethered to isoindigo units. In addition, the MW of the polymer was varied by changing the polymerization time. The polymers bearing DT side chains showed much better charge transport behavior, compared to that of polymers with OD side chains. The hole mobility of high-MW PIIDDTE-III with DT side-chains was determined to be higher than that of the low-MW polymer, PIIDDTE-II with identical side-chains. The thermally annealed film of PIIDDTE-III exhibited outstanding hole mobilities of ∼2.20 cm2 V-1 s-1 measured under ambient conditions. This work unambiguously demonstrates the effect of the branched side-chain bulkiness and MW on the thin film transistor (TFT) performances.

AB - New isoindigo and di(thienyl)ethylene-containing π-extended conjugated polymers with different branched side-chains and molecular weights (MWs) have been synthesized. Octyldodecyl (OD) and decyltetradecyl (DT) groups were employed as side chain moieties tethered to isoindigo units. In addition, the MW of the polymer was varied by changing the polymerization time. The polymers bearing DT side chains showed much better charge transport behavior, compared to that of polymers with OD side chains. The hole mobility of high-MW PIIDDTE-III with DT side-chains was determined to be higher than that of the low-MW polymer, PIIDDTE-II with identical side-chains. The thermally annealed film of PIIDDTE-III exhibited outstanding hole mobilities of ∼2.20 cm2 V-1 s-1 measured under ambient conditions. This work unambiguously demonstrates the effect of the branched side-chain bulkiness and MW on the thin film transistor (TFT) performances.

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High mobility isoindigo-based π-extended conjugated polymers bearing di(thienyl)ethylene in thin-film transistors

Abstract

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