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Synthesis and Characterization of Quinoxaline Derivative as Organic Semiconductors for Organic Thin-Film Transistors

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Three new quinoxaline-based derivatives, end-functionalized with 2,3,5,8-tetraphenyl (3), 2,3- diphenyl-5,8-di(thiophen-2-yl) (4), and 2,3-diphenyl-5,8-bis(5-phenylthiophen-2-yl) (5) were synthesized, characterized, and incorporated as organic semiconductors in top-contact/bottom-gate organic thin-film transistors (OTFTs). Thermal, optical, and electrochemical properties of the newly developed compounds were fully investigated. For the fabrication of thin films of all three compounds, solution-shearing (SS) and vacuum deposition method were employed. Thin films of compound 5 showed p-channel characteristics with hole mobilities as high as 2.6×10-5 cm2/Vs and current on/off ratio of 1.8×105 via solution process and 1.9×10-4 cm2/Vs and current on/off ratio of 3.5×106 via vacuum deposition.
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Keywords: Organic Thin-Film Transistors; Quinoxaline; Self-Assembled Monolayer

Document Type: Research Article

Affiliations: 1: Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea 2: Department of Chemistry, Pukyong National University, Busan 48513, Korea 3: Department of Chemical Engineering, Pukyong National University, Busan, 48513, Korea

Publication date: August 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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