Poly(1,4-bis((E)-2-(3-dodecylthiophen-2-yl)vinyl)benzene) for Solution Processable Organic Thin Film Transistor

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 molecu...

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Bibliographic Details
Published in:Bulletin of the Korean Chemical Society 2012, Vol.33 (5), p.1659-1663
Main Authors: Kim, Chul-Young, Park, Jong-Gwang, Lee, Min-Jung, Kwon, Soon-Ki, Kim, Jin-Hak, Shin, Sung-Chul, Kim, Yun-Hi
Format: Article
Language:Korean
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Summary: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 $8.59{\pm}10^{-4}\;cm^2\;V^{-1}\;s^{-1}$, an on/off current ratio of $2.0{\times}10^4$.
ISSN:0253-2964
1229-5949