影像科学与光化学 ›› 1988, Vol. 6 ›› Issue (2): 13-20.DOI: 10.7517/j.issn.1674-0475.1988.02.13

• 研究论文 • 上一篇    下一篇

9-甲基蒽单体、二聚体和夹心面包对在硅胶上的光物理和光化学性质研究

樊美公   

  1. 中国科学院感光化学研究所, 北京
  • 收稿日期:1986-11-19 修回日期:1987-03-31 出版日期:1988-05-20 发布日期:1988-05-20

PHOTOPHYSICS AND PHOTOCHEMISTRY OF MONOMER, DIMER, AND SANDWICH PAIR OF 9-METHYLANTHRACENE ON SILICA GEL

FAN MEI-GONG   

  1. Institute of Photographic Chemistry Academia Sinica, Beijing
  • Received:1986-11-19 Revised:1987-03-31 Online:1988-05-20 Published:1988-05-20

摘要: 研究了在硅胶表面上的9-甲基蒽和它的二聚体及其低温光解产物(夹心面包对)的荧光光谱,激发光谱和荧光寿命。发现了一个由二聚9-甲基蒽、三氯甲烷和真空下700℃活化硅胶形成的复合物。该复合物具有与单体和二聚体不同的特征激发光谱和发射光谱,低温下光照容易分解。当分解产物缓缓加热到室温,则复合物几乎完全可以再现。二聚体低温光解产物,夹心面包对,当其缓缓加热到室温,则完全变为单体蒽。

关键词: 9-甲基蒽, 二聚体, 夹心面包对, 光物理, 光化学

Abstract: The fluorescence spectra and lifetimes of monomer, dimer and sandwich pair of 9-methylamhracene have been investigated on silica gel surface. A complex, consisting of dimer, chloroform and activated silica gel under 700℃ in vacuo, has been found. The complex has-its own characteristic excitation and emission spectra and is easily photolyzed under low temperature. When the photodecomposed species of the complex are gradually warmed to room temperature, they are almost completely reversible. Otherwise, the low-temperature photopro-duct of the dimer, the sandwich pair of 9-methylanthracene are completely converted to the monomer, 9-methylanthracene.

Key words: 9-methylanthracene, dimer, sandwich pair, photophysics, photochemistry