Electrochemical polymerization of an isothianaphthene based monomer for low-bandgap polymer was carried out in a polymer lyotropic liquid crystal. We prepared hydroxypropyl cellulose/N,N-dimethylformamide (HPC/DMF) ly...Electrochemical polymerization of an isothianaphthene based monomer for low-bandgap polymer was carried out in a polymer lyotropic liquid crystal. We prepared hydroxypropyl cellulose/N,N-dimethylformamide (HPC/DMF) lyotropic liquid crystal system as an electrolyte solution to perform electrochemical polymerization of a hydrophobic monomer, although water was commonly employed as a solvent for HPC. Resultant polymer prepared in HPC/DMF shows both electro-activity and optical activity. Fourier transform infrared absorption spectroscopy measurement reveals that the resultant material is composite of HPC and polyisothianaphthene based.展开更多
Electrochemical polymerization of 4,4’-dimethyl-2,2’-bithiophene (4DMBT) was carried out in a concentrated solution of hydroxypropyl cellulose (HPC) liquid crystal in N,N-dimethylformamide. Infrared absorption spect...Electrochemical polymerization of 4,4’-dimethyl-2,2’-bithiophene (4DMBT) was carried out in a concentrated solution of hydroxypropyl cellulose (HPC) liquid crystal in N,N-dimethylformamide. Infrared absorption spectra suggested that the resultant polymer film contains HPC. This study demonstrates an electrochemical preparation of a polymer composite having liquid crystal order. We proposed a helical stacking composite model.展开更多
Synthesis of conductive polymer poly([thiophene]-[benzo[1,2,3]thiadiazole] [thiophene]) (abbreviated as P(T-Btdaz-T)) was achieved by electrochemical polymerization in hydroxypropyl cellulose (HPC)/N,N-dimethylformami...Synthesis of conductive polymer poly([thiophene]-[benzo[1,2,3]thiadiazole] [thiophene]) (abbreviated as P(T-Btdaz-T)) was achieved by electrochemical polymerization in hydroxypropyl cellulose (HPC)/N,N-dimethylformamide (DMF) in liquid crystal state. The polymer thus obtained shows fingerprint texture, which is derived from helical structure of the HPC in cholesteric liquid crystal state. Fourier transform infrared spectroscopy measurements revealed that the polymer film is P(T-Btdaz-T)/HPC composite. Circular dichroism optical absorption spectroscopy measurements show that the polymer has the optical activity. Next, electrochemical polymerization of 3,4-ethylene-dioxythiophene (EDOT) was carried out in columnar phase liquid crystal. The polymer transcribes the columnar structure and shows optical structure resembling columnar liquid crystal electrolyte solution.展开更多
文摘Electrochemical polymerization of an isothianaphthene based monomer for low-bandgap polymer was carried out in a polymer lyotropic liquid crystal. We prepared hydroxypropyl cellulose/N,N-dimethylformamide (HPC/DMF) lyotropic liquid crystal system as an electrolyte solution to perform electrochemical polymerization of a hydrophobic monomer, although water was commonly employed as a solvent for HPC. Resultant polymer prepared in HPC/DMF shows both electro-activity and optical activity. Fourier transform infrared absorption spectroscopy measurement reveals that the resultant material is composite of HPC and polyisothianaphthene based.
文摘Electrochemical polymerization of 4,4’-dimethyl-2,2’-bithiophene (4DMBT) was carried out in a concentrated solution of hydroxypropyl cellulose (HPC) liquid crystal in N,N-dimethylformamide. Infrared absorption spectra suggested that the resultant polymer film contains HPC. This study demonstrates an electrochemical preparation of a polymer composite having liquid crystal order. We proposed a helical stacking composite model.
文摘Synthesis of conductive polymer poly([thiophene]-[benzo[1,2,3]thiadiazole] [thiophene]) (abbreviated as P(T-Btdaz-T)) was achieved by electrochemical polymerization in hydroxypropyl cellulose (HPC)/N,N-dimethylformamide (DMF) in liquid crystal state. The polymer thus obtained shows fingerprint texture, which is derived from helical structure of the HPC in cholesteric liquid crystal state. Fourier transform infrared spectroscopy measurements revealed that the polymer film is P(T-Btdaz-T)/HPC composite. Circular dichroism optical absorption spectroscopy measurements show that the polymer has the optical activity. Next, electrochemical polymerization of 3,4-ethylene-dioxythiophene (EDOT) was carried out in columnar phase liquid crystal. The polymer transcribes the columnar structure and shows optical structure resembling columnar liquid crystal electrolyte solution.
