Convenient and highly effective fluorescence sensing for Hg2+ in aqueous solution and thin film
作者:Yu Liu、Miao Yu、Yong Chen、Ning Zhang
DOI:10.1016/j.bmc.2009.04.018
日期:2009.6
A quinolinocyclodextrin, that is, MQAS-beta-cyclodextrin (MQAS = N-(2-methyl-8-amino-quinolyl)-p-aminobenzene sulfonamide) was synthesized. Further experiments showed that it could form very stable stoichiometric 2:1 complex with Zn2+ in water. Significantly, the resultant quinolinocyclodextrin/Zn2+ complex showed the specific fluorescence response to Hg2+ over other metal ions, which could be readily distinguished in either aqueous solution or the PVA-based thin film. This finding would enable Zn center dot 3(2) complex as a convenient and highly efficient fluorescence sensor for the detection of Hg2+. (E) 2009 Elsevier Ltd. All rights reserved.