PMID- 24300087 OWN - NLM STAT- MEDLINE DCOM- 20140922 LR - 20181202 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1323 DP - 2014 Jan 3 TI - Preparation of monodispersed macroporous core-shell molecularly imprinted particles and their application in the determination of 2,4-dichlorophenoxyacetic acid. PG - 11-7 LID - S0021-9673(13)01756-1 [pii] LID - 10.1016/j.chroma.2013.11.002 [doi] AB - Porous polymers have aroused extensive attention due to their controllable porous structure in favor of mass transfer and binding capacity. In this work, the novel macroporous core-shell molecularly imprinted polymers (MIP) for selective recognition of 2,4-dichlorophenoxyacetic acid (2,4-D) were prepared by surface initiated atom transfer radical polymerization (si-ATRP). By using one-step swelling and polymerization method, the monodispersed macroporous poly(glycidyl methacrylate) (PGMA) particles were synthesized and used as supporting matrix for preparing surface MIP particles (PGMA@MIP). Thanks to the inner and outer surface-located binding cavities and the macroporous structure, the PGMA@MIPs revealed desirable efficiency for template removal and mass transfer, and thus excellent accessibility and affinity toward template 2,4-D. Moreover, PGMA@MIPs exhibited much higher selectivity toward 2,4-D than PGMA@NIPs. PGMA@MIP particles were directly used to selectively enrich 2,4-D from tap water and the recoveries of 2,4-D were obtained as 90.0-93.4% with relative standard division of 3.1-3.4% (n=3). The macroporous PGMA@MIPs also possessed steady and excellent reusable performance for 2,4-D in four extraction/stripping cycles. This novel macroporous core-shell imprinted material may become a powerful tool for rapid and efficient enrichment and separation of target compounds from the complicated samples. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Liu, Yongliang AU - Liu Y AD - Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. FAU - He, Yonghuan AU - He Y AD - Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. FAU - Jin, Yulong AU - Jin Y AD - Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. FAU - Huang, Yanyan AU - Huang Y AD - Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. FAU - Liu, Guoquan AU - Liu G AD - Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. FAU - Zhao, Rui AU - Zhao R AD - Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: zhaorui@iccas.ac.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131108 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Epoxy Compounds) RN - 0 (Methacrylates) RN - 0 (Polymers) RN - 2577AQ9262 (2,4-Dichlorophenoxyacetic Acid) RN - R8WN29J8VF (glycidyl methacrylate) SB - IM MH - 2,4-Dichlorophenoxyacetic Acid/*analysis MH - Absorption MH - Epoxy Compounds/*chemical synthesis/*chemistry MH - Kinetics MH - Methacrylates/*chemical synthesis/*chemistry MH - Microscopy, Electron MH - *Molecular Imprinting MH - Polymerization MH - Polymers/*chemical synthesis/chemistry MH - Porosity MH - Spectroscopy, Fourier Transform Infrared MH - Water Supply OTO - NOTNLM OT - 2,4-Dichlorophenoxyacetic acid OT - Atom transfer radical polymerization OT - Core-shell molecularly imprinted polymer OT - Macroporous structure OT - Poly(glycidyl methacrylate) particles EDAT- 2013/12/05 06:00 MHDA- 2014/09/23 06:00 CRDT- 2013/12/05 06:00 PHST- 2013/09/01 00:00 [received] PHST- 2013/10/31 00:00 [revised] PHST- 2013/11/01 00:00 [accepted] PHST- 2013/12/05 06:00 [entrez] PHST- 2013/12/05 06:00 [pubmed] PHST- 2014/09/23 06:00 [medline] AID - S0021-9673(13)01756-1 [pii] AID - 10.1016/j.chroma.2013.11.002 [doi] PST - ppublish SO - J Chromatogr A. 2014 Jan 3;1323:11-7. doi: 10.1016/j.chroma.2013.11.002. Epub 2013 Nov 8.