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

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 subuni...

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Detalles Bibliográficos
Autores principales: Bathula, Chinna, Appiagyei, Alfred Bekoe, Yadav, Hemraj, K., Ashok Kumar, Ramesh, Sivalingam, Shrestha, Nabeen K., Shinde, Surendra, Kim, Hyun-Seok, Kim, Heung Soo, Reddy, Lebaka Veeranjaneya, Mohammed, Arifullah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6955725/
https://www.ncbi.nlm.nih.gov/pubmed/31888164
http://dx.doi.org/10.3390/nano9121787
Descripción
Sumario: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 A(3) + B(2) 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) cm(2) V(−1) s(−1) and 7.47 × 10(2), respectively.

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