Structure-Electrochemical Property Relationship of F vs 2F Substituents in Low Bandgap Conjugated Polymers

Date

2023-06-01

Author

Cevher, Duygu
Toppare, Levent Kamil
Çırpan, Ali

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Two alternating copolymers bearing fluorinated benzothiadiazole as a strong acceptor unit and dithienopyrrole as a strong donor unit were designed and synthesized to discuss the effect of the number of fluorine atom substitution. The polymers were characterized via cyclic voltammetry, spectroelectrochemistry, electrochemical impedance spectroscopy and galvanostatic charge discharge studies. Besides a red shift in absorption spectra, an anodic shift was also observed in the oxidation potentials when number of fluorine atom increases in the polymer backbone. Galvanostatic charge-discharge (GCD) studies revealed that difluorinated polymer exhibited enhanced area specific capacitance compared to mono fluorinated polymer.

Subject Keywords

fluorination, benzothiadiazole, dithienopyrrole, specific capacitance, DONOR-ACCEPTOR POLYMERS, SOLAR-CELLS, PERFORMANCE, BENZOTHIADIAZOLE, SUPERCAPACITOR, GAP, FLUORINATION, UNIT, BENZODITHIOPHENE, CONDUCTIVITY

URI

https://hdl.handle.net/11511/104573

Collections

Department of Chemistry, Article