Synthesis and electropolymerization of 5,12-dihydrothieno[3 ',4 ': 2,3][1,4]dioxocino[6,7-b]-quinoxaline and its electrochromic properties

2007-08-01
Ak, Mine Sulak
Ak, Metin
Guellue, Mustafa
Toppare, Levent Kamil
Synthesis of a new thiophene-based monomer; 5,12-dihydrothieno[3',4':2,3][1,4]dioxocino[6,7-b]quinoxaline (DDQ), was realized. The chemical structure of the monomer was characterized by H-1 NMR, FTIR and mass spectroscopy techniques. Electrochemical polymerization of DDQ and characterization of the resulting polymer [P(DDQ)] was performed. Moreover, the spectroelectrochemical and electrochromic properties of the polymer film were investigated. P(DDQ) has a low oxidation potential (0.9 V) and low band gap (1.73 eV) compared to polythiophene. In addition, dual-type polymer electrochromic device (ECD) based on P(DDQ) with poly(3,4-ethylenedioxythiophene) (PEDOT) was constructed. Spectroelectrochemistry, electrochromic switching, stability and open-circuit stability of the device were studied. It was observed that polymer have good switching time, reasonable contrast and optical memory.

Citation Formats
M. S. Ak, M. Ak, M. Guellue, and L. K. Toppare, “Synthesis and electropolymerization of 5,12-dihydrothieno[3 ‘,4 ’: 2,3][1,4]dioxocino[6,7-b]-quinoxaline and its electrochromic properties,” EUROPEAN POLYMER JOURNAL, vol. 43, no. 8, pp. 3452–3460, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41864.