| 基质环境对氨基苯甲酸/硅凝胶复合材料荧光特性的影响 |
| Influence of Matrix Surroundings on the Fluorescence Properties of Amino-Benzoic Acid Doped Silica Gel Materials |
|
| 摘要: |
| 关键词: SiO2凝胶 邻氨基苯甲酸 N-苯基邻氨基苯甲酸 荧光特性 |
| 基金项目: |
| Abstract: Two kinds of organic-inorganic composite luminescent material were prepared through sol-gel route, by doping o-amino-benzoic acid (ABA) or N-phenylanthranilic acid (N-PA) into SiO2 xerogels. Fluorescence properties and thermal properties of ABA and N-PA in SiO2 xerogels were studied. The relationship between the fluorescence properties and the preparative condition was also studied. The results showed that the ABA was easy to form dimer of non-luminescence among the molecules. The quenching concentration of the ABA was obviously increased owing to the shield of silica network. The fluorescence intensity of the composite material prepared at the acid condition was decreased, and a red shift for the fluorescence peak appeared. With the increasing of the pH value, the flu-orescence peak blue shifted and the intensity was increased. However, the fluorescent intensity of N-PA/SiO2 was increasing due to the concentration of N-PA was increased. The thermal stability of ABA and N-PA in the composite material was also improved. But, when the temperature continued to increase, the collapse of the silica network made the organic molecules escape from the pore of the silica network, the decomposition of escaping molecules decreased the intensity of emission spectrum. |
| Keywords: SiO2 gel o-amino-benzoic acid N-phenylanthranilic acid fluorescence property |
| |
| 摘要点击次数: 1275 |
| 全文下载次数: 1547 |
| 余锡宾,熊娟,王则民,丁云峰.基质环境对氨基苯甲酸/硅凝胶复合材料荧光特性的影响[J].无机化学学报,2002,18(7):718-722. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
