Electrochromic and electrochemical properties of copolymer films based on EDOT and phenylthiophene derivatives.

Autor:	Lacerda, Glenda Ribeiro de Barros Silveira, Calado, Claudinei Rezende, Calado, Hállen Daniel Rezende
Předmět:	THIOPHENE derivatives ELECTROCHROMIC effect ELECTROCHEMICAL electrodes COPOLYMERS POLYMER films
Zdroj:	Journal of Solid State Electrochemistry; Mar2019, Vol. 23 Issue 3, p823-835, 13p
Abstrakt:	The poly(3,4-ethylenedioxythiophene-co-3-phenylthiophene) (P(EDOT-co-3PT)) and poly(3,4-ethylenedioxythiophene-co-3-(4-fluorophenyl)thiophene) (P(EDOT-co-FPT)) were electropolymerized with the application of 1.62 V and 1.95 V, respectively. Unpublished spectroelectrochemical and electrochromic properties of the conjugated copolymers with monomer ratio of 1:1 were investigated. A potential range of − 1.0 to 2.0 V was found to be suitable for the device operation between blue to purple (P(EDOT-co-3PT)) and (P(EDOT-co-FPT)). The maximum transmittance difference (Δ% T) was determined to be 8.24 and 10.37%, and the time differences between oxidation and reduction were 2.14 and 2.94 s. The copolymers showed lower band gap energies than their original homopolymers (~ 1.4 eV). [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink