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2,5-Bis(2-octyldodecyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione-Based Donor-Acceptor Alternating Copolymer Bearing Benzothieno[3,2-b] benzothiophene as an Organic Semiconductor and Its Application to Thin Film Transistors
- Authors
- Kim, Ji Ho; Kim, Kyung Hwan; Lee, Dae Hee; Yang, Da Seul; Heo, Dong Uk; Lee, Tae Wan; Cho, Min Ju; Choi, Dong Hoon
- Issue Date
- 1-1월-2013
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Benzothienobenzothiophene; conjugated polymer; diketopyrrolopyrrole; mobility; organic thin film transistor; semiconductor
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.581, no.1, pp.38 - 44
- Indexed
- SCIE
SCOPUS
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 581
- Number
- 1
- Start Page
- 38
- End Page
- 44
- ISSN
- 1542-1406
- Abstract
- New diketopyrrolopyrrole (DPP)-containing conjugated polymer such poly (benzothieno[3,2-b]benzothiophene-2,5-bis(2-octyldodecyl)-6-(thiophen-2-yl)pyrrolo [3,4-c]pyrrole-1,4(2H,5H)-dione) was successfully synthesized via Horner-Emmons condensation. The polymer showed a low bandgap energy (E-g = 1.56eV) in a film state. The polymer also exhibits good solubility in common organic solvents and good self-film-forming properties. The semiconducting properties of the polymer synthesized herein were evaluated in organic thin film transistors (OTFTs). The polymer exhibits charge carrier mobilities as high as 3.0 x 10(-3) cm(2)V(-1)s(-1) (I-on/off = 10(5)) after thermal annealing at 200 degrees C for 10min, which is three times higher than that of thin film transistor made of the pristine film.
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