Synthesis of A New Type of Responsive Hydrophilic Block Copolymer Fluorescence Probe and Its Application in Detection of Aluminum Ion in Agricultural Products
10.11895/j.issn.0253-3820.171392
- VernacularTitle:一种亲水性温敏聚合物荧光探针的制备及用于农产品中铝离子的检测
- Author:
Xue-Qiao XIE
1
;
Yun-Feng CAI
;
Juan HAN
;
Yun WANG
;
Tong CHEN
;
Jing LI
Author Information
1. 江苏省苏州健雄职业技术学院医药科技学院
- Keywords:
Polymer fluorescent probe;
Aluminum ion;
Detection;
Temperature response;
Water solubility
- From:
Chinese Journal of Analytical Chemistry
2018;46(4):502-510
- CountryChina
- Language:Chinese
-
Abstract:
A temperature-responsive hydrophilic block copolymer fluorescence sensor based on selective analysis of Al3+was designed and synthesized. The polymer fluorescent probe (L64-BTPA-SHMA) was synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization and characterized by 1 H NMR,and the recognition performance of the polymer probe was studied by fluorescence spectroscopy. It was found that the fluorescence response of Al3+detected by this polymer fluorescence probe was significantly affected by temperature. The higher the temperature, the lower the fluorescence intensity was observed. The results showed that 0.1 g/L polymer fluorescent probe had a good selectivity to Al3+in buffer solution at 25℃and pH 7.4,and was not affected by other metal ions. A fluorescence detection method based on this polymer probe for Al3+was developed. In this method,the fluorescence intensity was linear with Al3+concentration in the range of 2. 0 -18. 0 μmol/L, with a correlation coefficient of 0. 9977 and a detection limit of 1.43 μmol/L. The fluorescence response between the polymer fluorescence chemosensor and Al3+could be altered by controlling the temperature change. The successful application of the polymer fluorescence probe for detecting Al3+residues in agricultural products has practical application value.
