Selenophene based benzodithiophene polymers as potential candidates for optoelectronic applications
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
This work reports on the synthesis and characterization of two novel conjugated polymers consisting of selenophene substituted benzo[1,2-b:4,5-b?]dithiophene (SeBDT) donor, and dithienothiadiazole[3,4-c]pyridine(DTPyT)-P1 or thieno[3,4]pyrroledione(TPD)-P2 acceptors. The synthesized polymers are characterized for the significant photophysical prerequisites essential for organic electronics such as strong and broad optical absorption, thermal stability, and compatible highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels. The polymers are thermally stable up to 280–370 °C, and the optical band gaps for P1, P2 calculated from their film absorption edges are found to be 1.53 and 1.84 eV, respectively. In addition, the electrochemical studies of P1, P2 reveal the HOMO and LUMO energy levels of ?5.02,-5.04 eV, and ?3.49, ?3.20 eV, respectively, suggesting these materials to be potential candidates for the applications in organic electronics. © 2017 Elsevier Ltd
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Keywords
Conjugated polymers, Electromagnetic wave absorption, Electron energy levels, Energy gap, Light absorption, Molecular orbitals, Optoelectronic devices, Synthesis (chemical), Thermodynamic stability, Electrochemical studies, Highest occupied molecular orbital, HOMO and LUMO energies, Lowest unoccupied molecular orbital, Optoelectronic applications, Selenophene, Stilles reaction, Synthesis and characterizations, Organic polymers, Electronics, Polymers
Citation
Dyes and Pigments, 2018, 149, , pp. 639-643