The doping reaction of polyaniline with camphor sulfonic acid (CSAH) in different organic solvents was studied by UV Vis spectroscopy. The experimental results show that the polaron band of the species was shifted to ...The doping reaction of polyaniline with camphor sulfonic acid (CSAH) in different organic solvents was studied by UV Vis spectroscopy. The experimental results show that the polaron band of the species was shifted to shorter wavelength when polyaniline was doped with CSAH in N methyl 2 pyrrolidione (NMP) solvent, while the red shift of polaron band was observed when it was in N, N dimethylformamide (DMF). It indicates that the influence of different processing solvents on the doping property of polyaniline is greatly different. N methyl 2 pyrrolidione is a good solvent for polyaniline, polyaniline chain is unfolded in it. The interaction of NMP with CSAH is so strong that the resulting product is apt to dedoping, while the solubility of polyaniline in DMF is relatively low and polyaniline chain is in partly folded state. Thus the doping reaction is kinetically disadvantageous but thermodynamically advantageous.展开更多
The doping reaction of pristine polyaniline(udpan) with camphor sulfonic acid in N methyl 2 pyrrolidone(NMP) and N,N dimethylformamide(DMF) has been studied by UV Vis spectrometry. The results showed that the polaron ...The doping reaction of pristine polyaniline(udpan) with camphor sulfonic acid in N methyl 2 pyrrolidone(NMP) and N,N dimethylformamide(DMF) has been studied by UV Vis spectrometry. The results showed that the polaron band of the compound doped in NMP at 800 nm shifted to short wavelength with time and that of doped in DMF at 725 nm to long wavelength. The results are discussed in terms of the solubility behavior of the doped compounds in different solvents.展开更多
文摘The doping reaction of polyaniline with camphor sulfonic acid (CSAH) in different organic solvents was studied by UV Vis spectroscopy. The experimental results show that the polaron band of the species was shifted to shorter wavelength when polyaniline was doped with CSAH in N methyl 2 pyrrolidione (NMP) solvent, while the red shift of polaron band was observed when it was in N, N dimethylformamide (DMF). It indicates that the influence of different processing solvents on the doping property of polyaniline is greatly different. N methyl 2 pyrrolidione is a good solvent for polyaniline, polyaniline chain is unfolded in it. The interaction of NMP with CSAH is so strong that the resulting product is apt to dedoping, while the solubility of polyaniline in DMF is relatively low and polyaniline chain is in partly folded state. Thus the doping reaction is kinetically disadvantageous but thermodynamically advantageous.
文摘The doping reaction of pristine polyaniline(udpan) with camphor sulfonic acid in N methyl 2 pyrrolidone(NMP) and N,N dimethylformamide(DMF) has been studied by UV Vis spectrometry. The results showed that the polaron band of the compound doped in NMP at 800 nm shifted to short wavelength with time and that of doped in DMF at 725 nm to long wavelength. The results are discussed in terms of the solubility behavior of the doped compounds in different solvents.
