Siloxane-Terminated Solubilizing Side Chains: Bringing Conjugated Polymer Backbones Closer and Boosting Hole Mobilities in Thin-Film Transistors
- Authors
- Mei, Jianguo; Kim, Do Hwan; Ayzner, Alexander L.; Toney, Michael F.; Bao, Zhenan
- Issue Date
- Dec-2011
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.133, no.50, pp.20130 - 20133
- Journal Title
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
- Volume
- 133
- Number
- 50
- Start Page
- 20130
- End Page
- 20133
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/6003
- DOI
- 10.1021/ja209328m
- ISSN
- 0002-7863
- Abstract
- We introduce a novel siloxane-terminated solubilizing group and demonstrate its effectiveness as a side chain in an isoindigo-based conjugated polymer. An average hole mobility of 2.00 cm(2) V-1 s(-1) (with a maximum mobility of 2.48 cm(2) V-1 s(-1)), was obtained from solution-processed thin-film transistors, one of the highest mobilities reported to date. In contrast, the reference polymer with a branched alkyl side chain gave an average hole mobility of 0.30 cm(2) V-1 s(-1) and a maximum mobility of 0.57 cm(2) V-1 s(-1). This is largely explained by the polymer packing: our new polymer exhibited a pi-pi stacking distance of 3.58 angstrom, while the reference polymer showed a distance of 3.76 angstrom.
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Collections - College of Engineering > Department of Organic Materials and Fiber Engineering > 1. Journal Articles
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