Composites of high molecular weight polyaniline with various weight percentages of multi-walled carbon nanotubes(MWNTs) were synthesized in the presence of selected dissolved neutral salt by in situ polymerization.The...Composites of high molecular weight polyaniline with various weight percentages of multi-walled carbon nanotubes(MWNTs) were synthesized in the presence of selected dissolved neutral salt by in situ polymerization.The composites were characterized by means of SEM,FTIR and XRD,four-point probe conductivity measurements.The results indicate that the composites possess very different morphologies,high electrical conductivities and good crystallization compared with high molecular weight polyaniline.展开更多
By oxidative coupling polymerization a novel electroactive polyamide,with fixed conjugated length of oligoaniline(amine-capped aniline pentamer)in the main chain,was successfully synthesized.The structure of the elect...By oxidative coupling polymerization a novel electroactive polyamide,with fixed conjugated length of oligoaniline(amine-capped aniline pentamer)in the main chain,was successfully synthesized.The structure of the electroactive polyamide was confirmed via FTIR and NMR.The UV-Vis spectra were used to monitor the chemical oxidation process of the reduced polyamide.Moreove,its electrochemical behavior was investigated by cyclic voltammetry(CV)measurement.It was found that the obtained electroactive polyamide with amine-capped aniline pentamer segments had a quasi-reversible electrochemical property in the cyclic voltammetry,which was the same as polyaniline.Its electrical conductivity is about 1.24×10-6 S/cm at room temperature upon preliminarily protonic-doped experiment.展开更多
A new electroactive polyaryletherketone containing benzonitrile(EPEEK-CN) was synthesized from 2,6-difluorobenzonitrile,p-benzenediol and difluoromonomer containing phenyl-capped aniline tetramer segment,via ternary p...A new electroactive polyaryletherketone containing benzonitrile(EPEEK-CN) was synthesized from 2,6-difluorobenzonitrile,p-benzenediol and difluoromonomer containing phenyl-capped aniline tetramer segment,via ternary polycondensation.The obtained EPEEK-CN shows certain extent solubility in organic solvents,and its film casted from DMAc solution exhibits interesting electrical,mechanical and dielectric properties.展开更多
A novel electroactive poly(aryl ether ketone), with fixed conjugated length of oligoaniline(phenyl-capped aniline tetramer) in the main chain, was successfully synthesized via oxidative coupling polymerization method....A novel electroactive poly(aryl ether ketone), with fixed conjugated length of oligoaniline(phenyl-capped aniline tetramer) in the main chain, was successfully synthesized via oxidative coupling polymerization method. The structure of poly(aryl ether ketone) was systematically studied by Fourier-transform infrared( FTIR) spectra, 1H NMR, and X-ray powder diffraction(XRD). And its electrochemical behavior was studied by cyclic voltammetry(CV) measurement. It was found that the obtained poly(aryl ether ketone) bearing phenyl-capped aniline tetramer segments had a reversible electrochemical property in the cyclic voltammetry, which was the same as that of polyaniline. Moreover, the thermal properties of poly(aryl ether ketone) were evaluated by thermogravimetric analysis(TGA).展开更多
文摘Composites of high molecular weight polyaniline with various weight percentages of multi-walled carbon nanotubes(MWNTs) were synthesized in the presence of selected dissolved neutral salt by in situ polymerization.The composites were characterized by means of SEM,FTIR and XRD,four-point probe conductivity measurements.The results indicate that the composites possess very different morphologies,high electrical conductivities and good crystallization compared with high molecular weight polyaniline.
文摘By oxidative coupling polymerization a novel electroactive polyamide,with fixed conjugated length of oligoaniline(amine-capped aniline pentamer)in the main chain,was successfully synthesized.The structure of the electroactive polyamide was confirmed via FTIR and NMR.The UV-Vis spectra were used to monitor the chemical oxidation process of the reduced polyamide.Moreove,its electrochemical behavior was investigated by cyclic voltammetry(CV)measurement.It was found that the obtained electroactive polyamide with amine-capped aniline pentamer segments had a quasi-reversible electrochemical property in the cyclic voltammetry,which was the same as polyaniline.Its electrical conductivity is about 1.24×10-6 S/cm at room temperature upon preliminarily protonic-doped experiment.
文摘A new electroactive polyaryletherketone containing benzonitrile(EPEEK-CN) was synthesized from 2,6-difluorobenzonitrile,p-benzenediol and difluoromonomer containing phenyl-capped aniline tetramer segment,via ternary polycondensation.The obtained EPEEK-CN shows certain extent solubility in organic solvents,and its film casted from DMAc solution exhibits interesting electrical,mechanical and dielectric properties.
文摘A novel electroactive poly(aryl ether ketone), with fixed conjugated length of oligoaniline(phenyl-capped aniline tetramer) in the main chain, was successfully synthesized via oxidative coupling polymerization method. The structure of poly(aryl ether ketone) was systematically studied by Fourier-transform infrared( FTIR) spectra, 1H NMR, and X-ray powder diffraction(XRD). And its electrochemical behavior was studied by cyclic voltammetry(CV) measurement. It was found that the obtained poly(aryl ether ketone) bearing phenyl-capped aniline tetramer segments had a reversible electrochemical property in the cyclic voltammetry, which was the same as that of polyaniline. Moreover, the thermal properties of poly(aryl ether ketone) were evaluated by thermogravimetric analysis(TGA).
