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Synthesis of Polythiophenes with Electron-Donating Side-Chain and their Application to Organic Thin-Film Transistors
- Authors
- Paek, S[Paek, Sunhee]; Lee, J[Lee, Jaemin]; Ko, JM[Ko, Jung Min]; Lim, HS[Lim, Hyun Seok]; Lim, J[Lim, Jongsun]; Cho, SH[Cho, Seung Hyun]; Lee, JY[Lee, Jun Young]; Lee, C[Lee, Changjin]
- Issue Date
- 2009
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- organic semiconductor; OTFT; Stille polymerization; thiophene
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.504, pp.52 - 58
- Indexed
- SCIE
SCOPUS
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 504
- Start Page
- 52
- End Page
- 58
- ISSN
- 1542-1406
- Abstract
- Thiophene-based pi-conjugated polymers have been widely used in p-channel OTFTs due to their high charge carrier mobility. SPQT-12 which has dodecylsulfanyl side-chain was synthesized by Stille polymerization. The polymer was characterized by (1)H NMR, GPC, UV-Vis spectroscopy, and cyclic voltammetry. Molecular weight (Mn) of SPQT-12 was 10,000 (PDI = 1.7), and SPQT-12 were readily soluble in common organic solvents. In the film state, SPQT-12 showed absorption with lambda(max) at 553 nm and optical band gap of 1.87 eV. A mobility of 1.0 x 10(-3) cm(2)/Vs, an on/off ratio of 5.8 x 10(3) and threshold voltage of -11V have been obtained with OTFTs using SPQT-12.
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Related Researcher
- LEE, JUN YOUNG
- Engineering (Chemical Engineering)