SELENOPHENE AS A BRIDGE IN MOLECULAR ARCHITECTURE OF BENZOTRIAZOLE CONTAINING CONJUGATED COPOLYMERS TO GAIN INSIGHT ON OPTICAL AND ELECTROCHEMICAL PROPERTIES OF POLYMERS

2015-08-03
UNAY, Hande
UNLU, Naime Akbasoglu
HIZALAN, Gonul
HACIOGLU, Serife O.
Toppare, Levent Kamil
Çırpan, Ali
Polymers containing selenophene as a bridge; poly(2-(2-octyldodecyl)-4-(selenophen-2-yl)-7-(5-(thiophen-2-yl)selenophen-2-yl)-2H-benzo[d][1,2,3]triazole)(P1)and poly(2-(2-octyldodecyl)-4-(5-phenylselenophen-2-yl)-7-(selenophen-2-yl)-2H-benzo[d][1,2,3]triazole (P2) were synthesized via Stille and Suzuki coupling reactions, respectively. Optical and electrochemical properties were investigated and comparisons with their thiophene analogs were done. Selenophene substitution resulted in low band gap and red shifted absorption, fast switching times (less than 1s) with reasonable optical contrast. Switching time of P2 was 0.2 second which is the fastest switching time regarding benzotriazole-based polymers. Photovoltaic properties of P1 and P2 were investigated. The optimized devices showed 0.45% and 0.75% power conversion efficiency, respectively.

Citation Formats
H. UNAY, N. A. UNLU, G. HIZALAN, S. O. HACIOGLU, L. K. Toppare, and A. Çırpan, “SELENOPHENE AS A BRIDGE IN MOLECULAR ARCHITECTURE OF BENZOTRIAZOLE CONTAINING CONJUGATED COPOLYMERS TO GAIN INSIGHT ON OPTICAL AND ELECTROCHEMICAL PROPERTIES OF POLYMERS,” PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS, vol. 190, no. 8, pp. 1294–1306, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37165.