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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 

 
Title
Highly Crystalline 2,6,9,10-Tetrakis((4-hexylphenyl)ethynyl)anthracene for Efficient Solution-Processed Field-effect Transistors
Author
Jung A Hur, Jicheol Shin, Tae Wan Lee, Kyung Hwan Kim, Min Ju Cho, Dong Hoon Choi*
Keywords
Organic semiconductor, Conjugated molecule, Thin film transistor, Field-effect transistor, Photoresponsivity
Abstract
A new anthracene-containing conjugated molecule was synthesized through the Sonogashira coupling and reduction reactions. 1-Ethynyl-4-hexylbenzene was coupled to 2,6-bis((4-hexylphenyl) ethynyl)anthracene- 9,10-dione through a reduction reaction to generate 2,6,9,10-tetrakis((4-hexylphenyl)ethynyl) anthracene. The semiconducting properties were evaluated in an organic thin film transistor (OTFT) and a single-crystal fieldeffect transistor (SC-FET). The OTFT showed a mobility of around 0.13 cm2 V−1 s−1 (ION/IOFF > 106), whereas the SC-FET showed a mobility of 1.00-1.35 cm2 V−1 s−1, which is much higher than that of the OTFT. Owing to the high photoluminescence quantum yield of 2,6,9,10-tetrakis((4-hexylphenyl)ethynyl) anthracene, we could observe a significant increase in drain current under irradiation with visible light (λ = 538 nm, 12.5 μW/ cm2).
Page
1653 - 1658
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