TY - JOUR
T1 - Electrochemical synthesis, characterization, and electrochromic properties of poly(3-chlorothiophene) and its copolymer with 3-methylthiophene in a room temperature ionic liquid
AU - Pang, Yuehong
AU - Xu, He
AU - Li, Xiaoyu
AU - Ding, Hongliu
AU - Cheng, Yuxiao
AU - Shi, Guoyue
AU - Jin, Litong
PY - 2006/11
Y1 - 2006/11
N2 - Electrochemical homopolymerization of 3-chlorothiophene (ClT) and copolymerization with 3-methylthiophene (MeT) were carried out via potentiodynamic and galvanostat methods by using ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate, [BMIM]PF6) as the growth medium and the supporting electrolyte. Both homopolymer(PClT) and copolymer P(ClT-co-MeT) were characterized via cyclic voltammetry (CV), Fourier transform infrared spectroscopy (FTIR), spectroelectrochemical analysis and kinetic study. Homopolymer revealed color changes between deep red and deep blue, whereas copolymer showed the most vivid change of color between bright red and greenish blue in fully reduced and oxidized states. Via kinetic studies, switching time and the maximum optical contrast % ΔT were found to be 2.4 s and 17% for PClT, 0.9 s and 26% for P(ClT-co-MeT). Compared with PClT (580 times), the copolymer exhibited a long-term switching stability up to 2300 double switches. Results implied that copolymerization is a valuable approach to achieve the desired electrochromic properties.
AB - Electrochemical homopolymerization of 3-chlorothiophene (ClT) and copolymerization with 3-methylthiophene (MeT) were carried out via potentiodynamic and galvanostat methods by using ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate, [BMIM]PF6) as the growth medium and the supporting electrolyte. Both homopolymer(PClT) and copolymer P(ClT-co-MeT) were characterized via cyclic voltammetry (CV), Fourier transform infrared spectroscopy (FTIR), spectroelectrochemical analysis and kinetic study. Homopolymer revealed color changes between deep red and deep blue, whereas copolymer showed the most vivid change of color between bright red and greenish blue in fully reduced and oxidized states. Via kinetic studies, switching time and the maximum optical contrast % ΔT were found to be 2.4 s and 17% for PClT, 0.9 s and 26% for P(ClT-co-MeT). Compared with PClT (580 times), the copolymer exhibited a long-term switching stability up to 2300 double switches. Results implied that copolymerization is a valuable approach to achieve the desired electrochromic properties.
KW - Conducting polymers
KW - Electrochromism
KW - Electropolymerization
KW - Ionic liquids
KW - Polythiophene derivatives
UR - https://www.scopus.com/pages/publications/33750528514
U2 - 10.1016/j.elecom.2006.08.007
DO - 10.1016/j.elecom.2006.08.007
M3 - 文章
AN - SCOPUS:33750528514
SN - 1388-2481
VL - 8
SP - 1757
EP - 1763
JO - Electrochemistry Communications
JF - Electrochemistry Communications
IS - 11
ER -