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薛 奇, Shi Jin and Gi Xue*
Macromolecules 1997, 30, 5753-5757,-0001,():
-1年11月30日
Fourier transform Raman spectroscopy of a thiophene solution shows a reduction of aromaticity of the thiophene ring by the interaction with a solvated Lewis acid, which lowers the oxidation potential of the monomer. Low-potential electrochemical deposition of polythiophene was carried out in the presence of a Lewis acid in a solvent with a suitable donor number. High quality conducting polythiophene films were prepared at low potential in BF3-ethyl ether. The conductivity parallel to the film surface is more than 104 times that across the film thickness. This anisotropy is related to the orientation of polythiophene chains. The molecular arrangement of polythiophene on a stainless steel electrode was investigated by surface-enhanced Raman scattering and infrared reflection-absorption spectroscopy.
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【期刊论文】Electrochemical Copolymerization of Pyrrole and Styrene
薛 奇, Shi Jin, Xiaorong Liu, Wei Zhang, Yun Lu, and Gi Xue*
Macromolecules 2000, 33, 4805-4808,-0001,():
-1年11月30日
A semiconducting pyrrole-styrene block copolymer film was electrochemically synthesized in nitromethane. The product polymer was confirmed to be a copolymer of pyrrole and styrene and not a composite or a blend of PPy and PSt through electrochemical, spectral, and dissolving experiments.
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【期刊论文】Ordered Conducting Polypyrrole Doped with Sulfopropyl Ether of β-Cyclodextrin
薛 奇, Wei Chen, Xiaobo Wan, Ning Xu, and Gi Xue*
Macromolecules 2003, 36, 276-278,-0001,():
-1年11月30日
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【期刊论文】Surface Reactions on Polymer Thin Films Studied by Surface-Enhanced Raman Scattering
薛 奇, Dong-Shan Zhou, Ning Xu, Liang Li, Gendin Ji, and Gi Xue*
J. Phys. Chem. B 2003, 107, 2748-2751,-0001,():
-1年11月30日
The laser-induced chemical reactions on the surface of a polymer film were investigated by surface-enhanced Raman scattering (SERS) using chemically deposited silver as the SERS activating layer on the surface of the film. The silver-catalyzed pyrolysis at the outermost surface of the polyacrylonitrile film under laser radiations with different wavelengths was investigated by this SERS technique. The extremely low carbonization temperature at room temperature under laser implies several responsible mechanisms.
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薛 奇, Jinglu Chen, Gi Xue, * and Yanhong Li, Lei Wang and Guohua Tian
Macromoloculos 2001, 34, 1297-1301,-0001,():
-1年11月30日
The partially disentangled poly(vinyl chloride) (PVC) samples were prepared by freezeextracting from dilute PVC/THF solutions. The conformation of these samples was investigated by infrared and Raman spectroscopy. The structural relaxation behaviors were studied by differential scanning calorimeter (DSC). The results showed that the PVC samples prepared from dilute solutions with concentrations lower than 0.25% were in the expanded state with fewer entanglements. The conformation and structural relaxation of PVC depended strongly on the entanglements in polymers, and the structural relaxation rate increased with decreasing chain entanglements, which is in good agreement with the modeling predictions.
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