TY - JOUR
T1 - An electrochemical study of soluble copolymer of ethyl carbazole with N-methyl pyrrole and 3-methyl thiophene
AU - Sezer, Esma
AU - Ustamehmetoǧlu, Belkis
AU - Saraç, A. Sezai
PY - 2004/2
Y1 - 2004/2
N2 - Copolymers of N-ethyl Carbazole (ECZ) with N-Methyl Pyrrole (N-MPy) and 3-Methyl Thiophene (3-MTh) were synthesized on platinum substrate and electrochemical investigation of polymeric films was performed. The characterization of homopolymer and copolymer films was performed by electrochemical methods (i.e. polarization curves and cyclovoltammetric measurements), solid-state conductivity measurements and spectrophotometric methods comparatively. A possible scheme for the copolymerization has been suggested. Solid state conductivity of PECz can be improved by inclusion of 3MTh and NMPy into chain. The ionization potentials, Ip, electron affinity, Ea, optical band gap, Eg, peak potentials, Ep, and doping degrees, y, of copolymer electrodes were calculated from these measurements. Copolymer electrodes have lower Ip, E g, Ep values and better switching properties in accordance with homopolymer electrodes. Presence of alkyl group gives solubility to copolymers obtained both chemically and electrochemically.
AB - Copolymers of N-ethyl Carbazole (ECZ) with N-Methyl Pyrrole (N-MPy) and 3-Methyl Thiophene (3-MTh) were synthesized on platinum substrate and electrochemical investigation of polymeric films was performed. The characterization of homopolymer and copolymer films was performed by electrochemical methods (i.e. polarization curves and cyclovoltammetric measurements), solid-state conductivity measurements and spectrophotometric methods comparatively. A possible scheme for the copolymerization has been suggested. Solid state conductivity of PECz can be improved by inclusion of 3MTh and NMPy into chain. The ionization potentials, Ip, electron affinity, Ea, optical band gap, Eg, peak potentials, Ep, and doping degrees, y, of copolymer electrodes were calculated from these measurements. Copolymer electrodes have lower Ip, E g, Ep values and better switching properties in accordance with homopolymer electrodes. Presence of alkyl group gives solubility to copolymers obtained both chemically and electrochemically.
KW - 3-methythiophene
KW - N-ethycarbazole
KW - N-methylpyrrole
KW - Soluble copolymers
UR - http://www.scopus.com/inward/record.url?scp=28444462522&partnerID=8YFLogxK
U2 - 10.1080/00914030490267645
DO - 10.1080/00914030490267645
M3 - Article
AN - SCOPUS:28444462522
SN - 0091-4037
VL - 53
SP - 105
EP - 118
JO - International Journal of Polymeric Materials and Polymeric Biomaterials
JF - International Journal of Polymeric Materials and Polymeric Biomaterials
IS - 2
ER -