东南大学学报（自然科学版）2011，Vol.41Issue(2)：416-419,4.DOI:10.3969/j.issn.1001-0505.2011.02.038
正相微乳液法制备负载染料的二氧化硅荧光纳米粒子
Synthesis of dye-doped silica nanoparticles in O/W micelle microemulsion
董宝利 1王明亮 1钱鹰 1王芳 1周盛蕊1
作者信息
- 1. 东南大学化学化工学院,南京,211189
- 折叠
摘要
Abstract
Oil-solubility dye 2,5-bis [ 4-( 2-arylvinyl ) phenyl ] -1,3,4-oxadiazoles ( PASPO ) is trapped into silica nanoparticles through oil/water(O/W) micelle microemulsion method. The fluorescent nanoparticles are characterized by transmission electron microscopy (TEM) and infrared (IR) spectra. The results show that the nanoparficles are mono-dispersed and spherical, and the average size is about 30 nm. The optical properties of the dye PASPO and the nanoparticles are characterized by ultraviolet (UV) spectra and fluorescence spectra. It is found that their spectra are similar. With the increase of the solvent polarity from chloroform to N, N-dimethylformamide ( DMF),their UV spectra are blue-shifted by 3 and 5 nm, and their fluorescence spectra are red-shifted by 54 and 50 nm,respectively, indicating that the optical properties of the dye PASPO are not remarkably influenced after being entrapped into nanoparticles. The fluorescent nanoparticles still possess strong fluorescence in water, which enables them to be used as fluorescent nanoprobes for aquiferous biological samples. The fluorescent nanoparticles are of important significance for developing high sensitivity nanoprobes used for biomarker and biodetection.关键词
正相微乳液法/PASPO/二氧化硅纳米粒子Key words
oil/water ( O/W ) micelle microemulsion method/ 2,5-bis [ 4-( 2-arylvinyl ) phenyl ] 1,3,4-oxadiazoles (PASPO) /silica nanoparticles分类
化学化工引用本文复制引用
董宝利,王明亮,钱鹰,王芳,周盛蕊..正相微乳液法制备负载染料的二氧化硅荧光纳米粒子[J].东南大学学报（自然科学版）,2011,41(2):416-419,4.
