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Siloxane-Terminated Solubilizing Side Chains: Bringing Conjugated Polymer Backbones Closer and Boosting Hole Mobilities in Thin-Film Transistors
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 π-π stacking distance of 3.58 Å, while the reference polymer showed a distance of 3.76 Å.
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Metadata
- Authors
- Mei, J., Kim, D. H., Ayzner, A. L., Toney, M. F., & Bao, Z.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-11-28
- Volume
- 133
- Issue
- 50
- Pages
- 20130-20133
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2070652170
- Cited by
- 690
- References
- 0
- FWCI
- 42.11
- Type
- journal article
- Language
- en
- Open access
- closed
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