PMID- 31190425 OWN - NLM STAT- MEDLINE DCOM- 20200217 LR - 20200217 IS - 1522-7243 (Electronic) IS - 1522-7235 (Linking) VI - 34 IP - 7 DP - 2019 Nov TI - Novel fluorescent sensor using molecularly imprinted silica microsphere-coated CdSe@CdS quantum dots and its application in the detection of 2,4,6-trichlorophenol from environmental water samples. PG - 680-688 LID - 10.1002/bio.3653 [doi] AB - In this study, a high fluorescence sensitivity and selectivity, molecularly imprinted nanofluorescent polymer sensor (MIP@SiO(2) @QDs) was prepared using a reverse microemulsion method. 2,4,6-Trichlorophenol (2,4,6-TCP) was detected using fluorescence quenching. Tetraethyl orthosilicate (TEOS), quantum dots (QDs) and 3-aminopropyltriethoxysilane (APTS) were used as cross-linker, signal sources and functional monomer respectively. The sensor (MIP@SiO(2) @QDs) and the non-imprinted polymer sensor (NIP@SiO(2) @QDs) were characterized using infra-red (IR) analysis, X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The selectivity of MIP@SiO(2) @QDs was examined by comparing 2,4,6-TCP with other similar functional substances including 2,4-dichlorophenol (2,4-DCP), 2,6-dichlorophenol (2,6-DCP) and 4-chlorophenol (4-CP). Results showed that MIP@SiO(2) @QDs had better selectivity for 2,4,6-TCP than the other compounds. Fluorescence quenching efficiency displayed a good linear response at the 2,4,6-TCP concentration range 5-1000 mumol/L. The limit of detection (LOD) was 0.9 mumol/L (3sigma, n = 9). This method was equally applicable for testing actual samples with a recovery rate of 98.0-105.8%. The sensor had advantages of simple pretreatment, good sensitivity and selectivity, and wide linear range and could be applied for the rapid detection of 2,4,6-TCP in actual samples. CI - (c) 2019 John Wiley & Sons, Ltd. FAU - Liu, Yang AU - Liu Y AD - College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, China. FAU - Chen, Piaopiao AU - Chen P AD - College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, China. FAU - Zheng, Shan AU - Zheng S AD - College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, China. FAU - Xing, Yichen AU - Xing Y AD - College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, China. FAU - Huang, Chaobiao AU - Huang C AD - College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, China. AD - Zhejiang Normal University Xingzhi College, Jinhua, China. LA - eng GR - 21575129/National Natural Science Foundation of China/ PT - Journal Article DEP - 20190612 PL - England TA - Luminescence JT - Luminescence : the journal of biological and chemical luminescence JID - 100889025 RN - 0 (Cadmium Compounds) RN - 0 (Chlorophenols) RN - 0 (Fluorescent Dyes) RN - 0 (Selenium Compounds) RN - 0 (Sulfides) RN - 0 (Water Pollutants, Chemical) RN - 057EZR4Z7Q (cadmium sulfide) RN - 7631-86-9 (Silicon Dioxide) RN - A7F646JC5C (cadmium selenide) RN - MHS8C5BAUZ (2,4,6-trichlorophenol) SB - IM MH - Cadmium Compounds/chemistry MH - Chlorophenols/*analysis MH - Fluorescent Dyes/*chemistry MH - Microspheres MH - *Molecular Imprinting MH - Particle Size MH - Quantum Dots/*chemistry MH - Selenium Compounds/chemistry MH - Silicon Dioxide/*chemistry MH - Sulfides/chemistry MH - Surface Properties MH - Water Pollutants, Chemical/*chemistry OTO - NOTNLM OT - 2,4,6-trichlorophenol OT - fluorescence OT - molecularly imprinted polymers OT - quantum dots EDAT- 2019/06/14 06:00 MHDA- 2020/02/18 06:00 CRDT- 2019/06/14 06:00 PHST- 2019/02/12 00:00 [received] PHST- 2019/04/19 00:00 [revised] PHST- 2019/05/05 00:00 [accepted] PHST- 2019/06/14 06:00 [pubmed] PHST- 2020/02/18 06:00 [medline] PHST- 2019/06/14 06:00 [entrez] AID - 10.1002/bio.3653 [doi] PST - ppublish SO - Luminescence. 2019 Nov;34(7):680-688. doi: 10.1002/bio.3653. Epub 2019 Jun 12.