Diphenylene was synthesized directly from benzene under the catalytic effect of GaP nanocrystals, and the effect of GaP nanocrystals content was studied. The experimental results showed that no reactions took place wi...Diphenylene was synthesized directly from benzene under the catalytic effect of GaP nanocrystals, and the effect of GaP nanocrystals content was studied. The experimental results showed that no reactions took place without GaP nanocrystals. The more the GaP nanocrystals added, the more the reaction complete. Furthermore, at high temperatures (450–480°C), when the content of GaP nanocrystals was high enough, almost all benzene polymerized and the yield of diphenylene was rather high. On the contrast, even if there are enough GaP nanocrystals in the reaction mixture, almost no polymerization reaction took place at low temperature (for example, 250–300°C), and the yield of diphenylene was very poor. The analytical results of XRD, IR, elemental analysis and NMR proved that the sample was truly diphenylene.展开更多
A GaP/morin nanocomposite material was prepared, and the key factorsaffecting the luminescent properties of the material were investigated. Intense luminescence wasobserved after the composite reaction between GaP nan...A GaP/morin nanocomposite material was prepared, and the key factorsaffecting the luminescent properties of the material were investigated. Intense luminescence wasobserved after the composite reaction between GaP nanocrystals and morin. The luminescence of theGaP/morin composite material is intensified remarkably with the ratio of morin to GaP nanocrystalsincreasing, but the peak wavelength remains unchanged. With the size of GaP particles decreasing,the luminescent intensity of the composite increases and the peak wavelength blue-shifts. Thepossible reason for this phenomenon was discussed.展开更多
基金the National Natural ScienceFoundation of China (Grant No. 60025409), the Fund for the Excellent Young Scientists in Shandong Province and the Fund for University Key Teacher by the Ministry of Education of China.
文摘Diphenylene was synthesized directly from benzene under the catalytic effect of GaP nanocrystals, and the effect of GaP nanocrystals content was studied. The experimental results showed that no reactions took place without GaP nanocrystals. The more the GaP nanocrystals added, the more the reaction complete. Furthermore, at high temperatures (450–480°C), when the content of GaP nanocrystals was high enough, almost all benzene polymerized and the yield of diphenylene was rather high. On the contrast, even if there are enough GaP nanocrystals in the reaction mixture, almost no polymerization reaction took place at low temperature (for example, 250–300°C), and the yield of diphenylene was very poor. The analytical results of XRD, IR, elemental analysis and NMR proved that the sample was truly diphenylene.
基金This project is jointly supported by the National Natural Science Foundation of China (Contract 60025409) the Fund for the Excellent Young Scientists in Shandong Province the Foundation for University Key Teachers by the Ministry of Education and the
文摘A GaP/morin nanocomposite material was prepared, and the key factorsaffecting the luminescent properties of the material were investigated. Intense luminescence wasobserved after the composite reaction between GaP nanocrystals and morin. The luminescence of theGaP/morin composite material is intensified remarkably with the ratio of morin to GaP nanocrystalsincreasing, but the peak wavelength remains unchanged. With the size of GaP particles decreasing,the luminescent intensity of the composite increases and the peak wavelength blue-shifts. Thepossible reason for this phenomenon was discussed.
