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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 5
BKCSDE 33(5)
May 20, 2012 

Poly(1,4-bis((E)-2-(3-dodecylthiophen-2-yl)vinyl)benzene) for Solution Processable Organic Thin Film Transistor
Chul Young Kim, Jonggwang Park, Min Jung Lee, Soon-Ki Kwon, Jin Hak Kim,* Sung-Chul Shin,* Yun-Hi Kim*
Organic thin film transistor, Organic semiconductor, Mobility, Solution process
New semiconducting polymer, poly[1,4-bis((E)-2-(5-bromo-3-dodecylthiophen-2-yl)vinyl)benzene], was designed, synthesized and characterized. The structure of polymer was confirmed by 1H-NMR, IR and elemental analysis. The polymer was soluble in specific organic solvent. The weight-average molecular weights (MW) of polymer was found to be 11,000 with polydispersity of 1.82. UV-Visible absorption spectrum showed the maximum absorption at 428 nm (in solution) and 438 nm (in film). The highest occupied molecular orbital (HOMO) energy of the polymer is −5.36 eV by measuring cyclic voltammetry (CV). A solutionprocessed polymer thin film transistor device shows a mobility of 8.59 × 10−4 cm2 V−1 s−1, an on/off current ratio of 2.0 × 104.
1659 - 1663
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