| 纳米SiO2颗粒表面修饰的有机分子在介质中的光物理行为研究 |
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| 引用本文： | 王辉,张晓宏,吴世康. 纳米SiO2颗粒表面修饰的有机分子在介质中的光物理行为研究[J]. 化学学报, 2003, 61(12): 1921-1925 |
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| 作者姓名： | 王辉 张晓宏 吴世康 |
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| 作者单位： | 中国科学院理化技术研究所,北京,100101;中国科学院理化技术研究所,北京,100101;中国科学院理化技术研究所,北京,100101 |
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| 基金项目： | 中国科学院知识创新工程重大项目基金资助. |
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| 摘 要： | 利用Sol-Gel方法投篮了单分散性很好的球型二氧化硅纳米颗粒,通过表面化 学修饰法引入了带有荧光发色团的有机分子,通过稳态光物理方法研究了纳米颗粒 表面的有机分子在水、乙醇以及阴、阳离子表面活性剂悬浮液中的光物理行为。实 验表明,纳米颗粒表面有机分子的分散状态是决定其光物理行为的主要因素。这一 结果为设计和开发新型“壳-核”型纳米二氧化硅荧光传感器提供了有用的参考。
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| 关 键 词： | 纳米材料 SiO2颗粒表面修饰 表面分子光物理 荧光化学敏感器 |
| 修稿时间： | 2003-04-14 |
A Study on Photophysical Behavior of Silica Gel Nano-Particles Modified by Organic Molecule in Different Mediums |
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| WANG,Hui ZHANG,Xiao-Hong WU,Shi-Kang. A Study on Photophysical Behavior of Silica Gel Nano-Particles Modified by Organic Molecule in Different Mediums[J]. Acta Chimica Sinica, 2003, 61(12): 1921-1925 |
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| Authors: | WANG Hui ZHANG Xiao-Hong WU Shi-Kang |
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| Affiliation: | Technical Institute of Physics and Chemistry, Chinese Academy of Sciences |
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| Abstract: | A spherical mono-dispersed silica nano-particle system has been prepared by sol-gel method. After surface modification fluorescent organic chromophore was introduced onto the particle surface. The steady state photophysical behavior of this system in different mediums has been studied carefully. The results indicated that the structural charac~teristics of organic chain attached and the dispersed situation of organic chromophore on surface both were the main factors for the photophysical behavior of suspension studied. These results will be important and beneficial for the design or development of this system used as a fluorescence chemical sensor. |
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| Keywords: | nano-material surface modification of SiO 2 particles molecular photo-physics on surface fluorescence chemical sensor |
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