文献类型：期刊文献

英文题名：Selective and Sensitive Chromo- and Fluorogenic Dual Detection of Anionic Surfactants in Water Based on a Pair of "On-Off-On" Fluorescent Sensors

作者：Qian, Junhong[1,2];Qian, Xuhong[1,2];Xu, Yufang[1,2]

机构：[1]E China Univ Chem Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]E China Univ Chem Technol, Sch Pharm, Shanghai 200237, Peoples R China

年份：2009

卷号：15

期号：2

起止页码：319

外文期刊名：CHEMISTRY-A EUROPEAN JOURNAL

收录：;EI(收录号：20090511882063);WOS:【SCI-EXPANDED(收录号:WOS:000262491500003)】；

语种：英文

外文关键词：fluorescence; naphthalene-1,8-dicarboimide; sensors; surfactants

摘要：A pair of relatively sensitive sensors for anionic-surfactant detection due to the formation of 1:1 complex without complicated sample pretreatment were provided. Five related dyes were specifically designed and simply synthesized to detect the anionic surfactant SDS at a relatively low concentration with both absorbance and fluorescence intensity changes. The results show that the addition of SDS to a solution of the dye in neutral water results in fluorescence quenching centered at 526 nm and a regular decrease in absorption spectrum. Both the emission and absorption spectra has no evident change in SDS concentration range of 7.2-2400 nm. It is also found that the 1:1 complex of SDS is formed with an associated constant 1.15106M-1. The quenching effect of SDS decreases with increasing ionic strength in neutral water, and 0.01M and 0.15M phosphate buffer solution, the fluorescence yields are 91, 89, and 65%.