title: Preparation of surface imprinting polymer capped Mn-doped ZnS quantum dots and their application for chemiluminescence detection of 4-nitrophenol in tap water.
abstract: In this paper, Mn-doped ZnS quantum dots (QDs) capped by a molecularly imprinted polymer (MIP) were synthesized. The results showed a high selectivity of the MIP-capped Mn-doped ZnS QDs toward the template molecule (4-nitrophenol) by QD fluorescence quenching. The application of MIP-capped Mn-doped ZnS QDs to the chemiluminescence (CL) system was also studied using a KIO(4)-H(2)O(2) system. This application combines the good selectivity of MIP with the high sensitivity of CL. The linear range of this CL system is from 0.1 to 40 microM, and the detection limit (DL) for 4-nitrophenol in the water can reach 76 nM. The method was also used in the real water samples, and the recoveries can fall in the range of 91-96%.
authors.affiliation: The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China.
authors.forename: Junxiao
authors.initials: J
authors.lastname: Liu
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.forename: Zhen
authors.initials: Z
authors.lastname: Lin
authors.forename: Jin-Ming
authors.initials: JM
authors.lastname: Lin
mesh_terms: D005618:Fresh Water / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D008345:Manganese / Q000737:chemistry; D054802:Molecular Imprinting / Q000379:methods*; D009596:Nitrophenols / Q000032:analysis*; D011108:Polymers / Q000737:chemistry*; D045663:Quantum Dots; D013056:Spectrophotometry, Ultraviolet; D013440:Sulfides / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry
chemical_list: D009596:Nitrophenols; D011108:Polymers; D013440:Sulfides; D017967:Zinc Compounds; D008345:Manganese; C031238:zinc sulfide; C024836:4-nitrophenol