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Facile Synthesis of Triphenylamine Based Hyperbranched Polymer for Organic Field Effect Transistors

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Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea
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Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea
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Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, Seoul 04620, Korea
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Division of Physics and Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Korea
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Department of Biological and Environmental Science, Dongguk University, Biomedical Campus, Ilsandong, Seoul 10326, Korea
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Department of Food Science and Technology, Yeungnam University, Gyeongsan 712-749, Korea
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Department of Microbiology, Yogi Vemana University, Kadapa (A.P.) 516003, India
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Institute of Food Security and Sustainable Science (IFSSA), Universiti Malaysia Kelantan Campus Jeli, Locked Bag 100, Jeli 17600, Kelantan, Malaysia
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Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1787; https://doi.org/10.3390/nano9121787
Received: 5 November 2019 / Revised: 4 December 2019 / Accepted: 4 December 2019 / Published: 16 December 2019
(This article belongs to the Section Nanocomposite Thin Films and 2D Materials)
In this study, we reported the synthesis and characterization of a novel hyperbranched polymer (HBPs) tris[(4-phenyl)amino-alt-4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-b’]dithiophene] (PTPABDT) composed of benzo[1,2-b:4,5-b’]dithiophene (BDT) and triphenyleamine (TPA) constituent subunits by A3 + B2 type Stille’s reaction. An estimated optical band gap of 1.69 eV with HOMO and LUMO levels of −5.29 eV and −3.60 eV, respectively, as well as a high thermal stability up to 398 °C were characterized for the synthesized polymer. PTPABDT fabricated as an encapsulated top gate/bottom contact (TGBC), organic field effect transistors (OFET) exhibited a p-type behavior with maximum field-effect mobility (µmax) and an on/off ratio of 1.22 × 10−3 cm2 V−1 s−1 and 7.47 × 102, respectively. View Full-Text
Keywords: benzo[1,2-b:4,5-b’]dithiophene; triphenylamine; Stille reaction; OFET benzo[1,2-b:4,5-b’]dithiophene; triphenylamine; Stille reaction; OFET
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MDPI and ACS Style

Bathula, C.; Appiagyei, A.B.; Yadav, H.; K., A.K.; Ramesh, S.; Shrestha, N.K.; Shinde, S.; Kim, H.-S.; Kim, H.S.; Reddy, L.V.; Mohammed, A. Facile Synthesis of Triphenylamine Based Hyperbranched Polymer for Organic Field Effect Transistors. Nanomaterials 2019, 9, 1787.

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