Premium
Two‐Fragment‐Dummy‐Template Molecularly Imprinted Polymers Mn Doped ZnS Quantum Dots Based Room‐Temperature Phosphorescene Probing for Hepatotoxic Homologues of Microcystin
Author(s) -
Li Yanyue,
You Jiaqi,
He Yu,
Ge Yili,
Song Gongwu,
Zhou Jiangang
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202002715
Subject(s) - molecularly imprinted polymer , detection limit , polymer , molecular imprinting , quantum dot , phosphorescence , materials science , doping , quenching (fluorescence) , chemistry , analytical chemistry (journal) , nuclear chemistry , nanotechnology , chromatography , fluorescence , selectivity , catalysis , organic chemistry , optoelectronics , physics , quantum mechanics
Fragment‐dummy‐template molecularly imprinted polymers‐Mn doped ZnS QDs (FMIP−Mn doped ZnS QDs) were synthesized by surface imprinting technique and specifically recognize microcystin (MC), especially MC‐LR, MC‐RR and MC‐YR. Pentylbenzene and L ‐arginine were used as fragment dummy template of MC to form specific recognition site cavity. The introduction of dummy template reduced the toxicity and cost of MC as template in the synthesis process. When MC was added to the FMIP, the room temperature phosphorescence (RTP) intensity is quenched regularly, thereby achieving the effect of detecting MC. The two‐fragment‐dummy‐template molecularly imprinted polymers‐Mn doped ZnS QDs (FMIP‐1) have distinct linearly RTP quenching toward MC in the concentration range of 0.0025‐0.0175 nM. The linear relationship between ΔP/P 0 and C MC‐LR , C MC‐YR and C MC‐RR were observed with the regression equation ΔP/P 0 =0.0150+24.70C MC‐LR , ΔP/P 0 =0.0995+21.38C MC‐YR , and ΔP/P 0 =0.101+16.96C MC‐RR (where concentration was in nM), with the detection limit of 0.25 pM, 1 pM and 0.6 pM, respectively. This method was applied to detect MC in water and freshwater products. The method have the potential for effective detection of other harmful substances in the complicated matrix.