Synthesis and optical properties of fused aromatic thienopyrazine based pi-conjugated polymers

Date

2011-07-01

Author

Kolay, Merve
Tarkuc, Simge
Udum, Yasemin Arslan
Toppare, Levent Kamil

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Two new polythieno[3,4-b]pyrazine derivatives, poly-10,12-bis(4-hexylthiophen-2-yl)dibenzo[f,h]thieno[3,4-b]quinoxaline (PDBTQ) and poly-8,10-bis(4-hexylthiophen-2-yl)acenaphtho[1,2-b]thieno[3,4-e]pyrazine (PATP) were synthesized by electrochemical polymerization and their electrochemical properties reported. Electroactivity of the monomer and electrochemical redox behavior of its polymers were investigated by cyclic voltammetry. Spectroelectrochemical analysis was performed and the band gaps of the polymers were determined as 2.0 eV and 1.2 eV from the onset of the pi-pi* transitions of PDBTQ and PATP, respectively. The polymer PDBTQ shows multicolored electrochromic behavior with five distinct states-orange (0.0 V), yellow (+0.30 V), brown (+0.50 V), green (+0.65 V), blue-gray (0.80 V); PATP has two distinct colors-transmissive gray (0.0 V) and green (+0.80 V). The polymers revealed superior optical contrast in the near-infrared (NIR) region with fast switching times of less than 1 s.

Subject Keywords

Signal Processing, Electrical and Electronic Engineering, General Materials Science, Atomic and Molecular Physics, and Optics, Mechanics of Materials, Civil and Structural Engineering, Condensed Matter Physics

URI

https://hdl.handle.net/11511/37990

Journal

SMART MATERIALS & STRUCTURES

DOI

https://doi.org/10.1088/0964-1726/20/7/075013

Collections

Department of Chemistry, Article

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Citation Formats

M. Kolay, S. Tarkuc, Y. A. Udum, and L. K. Toppare, “Synthesis and optical properties of fused aromatic thienopyrazine based pi-conjugated polymers,” SMART MATERIALS & STRUCTURES, pp. 0–0, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37990.