In the presence of p-toluene sulfonic acid (TSA) as a dopant, polyaniline (PAni) nanofibers, (about 80^-65 nm in diameter) were successfully synthesized with a chemical template-free method. It was found that the form...In the presence of p-toluene sulfonic acid (TSA) as a dopant, polyaniline (PAni) nanofibers, (about 80^-65 nm in diameter) were successfully synthesized with a chemical template-free method. It was found that the formation probability, morphology, and diameter of the resulting PAni-TSA nanofibers were sensitive to the synthetic conditions, such as reaction temperature, the molar ratio of TSA to aniline, and the concentration of TSA in the polymerization media. The molecular structure was characterized by using the FT-IR, Raman spectra and X-ray diffraction, which shows that the main chain structure of PAni-TSA nanofibers was in agreement with that of granular PAni.展开更多
The title compound 4-(3,4-methylenedioxylphenyl)-6-methyl-5-ethoxycaronyl-3,4- dihydropyrimidin-2(H)-one (C15H16N2O5) has been synthesized and determined by single-crystal X-ray diffraction. The crystal is of triclini...The title compound 4-(3,4-methylenedioxylphenyl)-6-methyl-5-ethoxycaronyl-3,4- dihydropyrimidin-2(H)-one (C15H16N2O5) has been synthesized and determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P with a = 7.580(1), b = 7.920(2), c = 13.168(4) ? a = 96.44(2), b = 96.71(2), g = 109.81(2), V = 728.8(3) 3, Z = 2, Mr = 304.30, Dc = 1.387 g/cm3, F(000) = 320, m(MoKa) = 0.105 mm-1 (l = 0.71073 ?, R = 0.0446 and wR = 0.1205. In the molecule the pyrimidine ring adopts a boat conformation.展开更多
文摘In the presence of p-toluene sulfonic acid (TSA) as a dopant, polyaniline (PAni) nanofibers, (about 80^-65 nm in diameter) were successfully synthesized with a chemical template-free method. It was found that the formation probability, morphology, and diameter of the resulting PAni-TSA nanofibers were sensitive to the synthetic conditions, such as reaction temperature, the molar ratio of TSA to aniline, and the concentration of TSA in the polymerization media. The molecular structure was characterized by using the FT-IR, Raman spectra and X-ray diffraction, which shows that the main chain structure of PAni-TSA nanofibers was in agreement with that of granular PAni.
基金Supported by the National Natural Science Foundation of China (No. 20372057) Natural Science Foundation of Jiangsu Province (No. BK2001142) and the Natural Science Foundation of Jiangsu Education Department (No. 01KJB150008) and Jiangsu Provincial
文摘The title compound 4-(3,4-methylenedioxylphenyl)-6-methyl-5-ethoxycaronyl-3,4- dihydropyrimidin-2(H)-one (C15H16N2O5) has been synthesized and determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P with a = 7.580(1), b = 7.920(2), c = 13.168(4) ? a = 96.44(2), b = 96.71(2), g = 109.81(2), V = 728.8(3) 3, Z = 2, Mr = 304.30, Dc = 1.387 g/cm3, F(000) = 320, m(MoKa) = 0.105 mm-1 (l = 0.71073 ?, R = 0.0446 and wR = 0.1205. In the molecule the pyrimidine ring adopts a boat conformation.
