Premium
Computer‐aided design and synthesis of CdTe@SiO 2 core–shell molecularly imprinted polymers as a fluorescent sensor for the selective determination of sulfamethoxazole in milk and lake water
Author(s) -
Xu Wanzhen,
Wang Yingchun,
Huang Weihong,
Yu Luan,
Yang Yanfei,
Liu Hong,
Yang Wenming
Publication year - 2017
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201601180
Subject(s) - molecularly imprinted polymer , monomer , fluorescence , molecular imprinting , polymer , cadmium telluride photovoltaics , chemistry , materials science , chemical engineering , selectivity , nanotechnology , organic chemistry , physics , quantum mechanics , engineering , catalysis
In this work, a molecular dynamics simulation method was introduced to compute the preassembled system of molecular imprinted polymers for sulfamethoxazole monomer. The results revealed that the ratio of sulfamethoxazole as template molecule to 3‐aminopropyltriethoxysilane as functional monomer to tetraethylorthosilicate as cross‐linker of 10:10:40 led to the most stable template‐functional monomer cluster. Based on the result of computational simulation, CdTe@SiO 2 core–shell imprinted polymers, a cadmium telluride quantum dots layer on the surface of aminofunctionalized SiO 2 , were synthesized as the fluorescent sensor. Then, a series of measures were used to characterize the structure and morphology to get optimal sensors. The concentration range was 5.0–30.0 μmol/L between molecular imprinted polymers at CdTe at SiO 2 , and sulfamethoxazole of the fluorescence intensity. To further verify the reliability and accuracy of the fluorescent sensor, the application was successfully by analyzing sulfamethoxazole in pure milk and lake water. The results showed the recoveries were above 96.89% with a relative standard deviation of 1.25–5.45%, and the fluorescence sensor with selective recognition provides an alternative solution for the determination of sulfamethoxazole.