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

ABSTRACT: 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.

SUBMITTER: Bathula C 

PROVIDER: S-EPMC6955725 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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

Bathula Chinna C   Appiagyei Alfred Bekoe AB   Yadav Hemraj H   K Ashok Kumar AK   Ramesh Sivalingam S   Shrestha Nabeen K NK   Shinde Surendra S   Kim Hyun-Seok HS   Kim Heung Soo HS   Reddy Lebaka Veeranjaneya LV   Mohammed Arifullah A  

Nanomaterials (Basel, Switzerland) 20191216 12

In this study, we reported the synthesis and characterization of a novel hyperbranched polymer (HBPs) <i>tris</i>[(4-phenyl)amino-<i>alt</i>-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 A<sub>3</sub> + B<sub>2</sub> 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 t  ...[more]

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