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Synthesis and Characterization of Semiconducting Polymers Composed of All Electron-Accepting Monomer Units for Organic Thin Film Transistors

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In this paper, we report the synthesis of two conjugated polymers which were achieved by the Suzuki polycondensation reactions between dipotassium benzotriazolyl bis(trifluoroborate) and dibromofluorene or dibromo-naphthalimide comonomers and their characterization. These newly obtained polymers, P(BTZ-NI) and P(BTZ-FO), were found to have moderate molecular weights whose Mn values were 30 k and 42 k, respectively, and to be thermally stable with decomposition temperatures reaching as high as 410 °C. In terms of their electrical properties, P(BTZ-NI) was found to have an electron mobility of (4.4±0.8)×10-5 cm2 V-1 s-1, whereas P(BTZ-FO) showed a balanced ambipolar transport nature with hole and electron mobility of (5.6±2.0)×10-5 cm2 V-1 s-1 and (5.0±0.9)×10-5 cm2 V-1 s-1 respectively, as determined in top-gate, bottom contact organic thin film transistors (OTFTs). This result may be understood by considering the structures of the two conjugated polymers which are both composed of all electron-accepting monomer units.
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Keywords: Conjugated Polymer; Dipotassium Aryl Bis(trifluoroborate); Organic Thin Film Transistors (OTFTs); Suzuki Polycondensation

Document Type: Research Article

Affiliations: 1: Department of Polymer Science and Engineering, Inha University, Incheon 402-751, South Korea 2: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, UK 3: Department of Advanced Materials Engineering, Kookmin University, Seoul 402-707, South 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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