期刊
SEPARATION SCIENCE AND TECHNOLOGY
卷 47, 期 12, 页码 1715-1724出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2012.659317
关键词
molecular imprinting; photopolymerization; pre-concentration by membrane diffusion; quercetin; track-etched membranes
资金
- Russian Foundation for Basic Research [10-03-01023-a]
A polymer membrane imprinted with quercetin has been synthesized in the presence of nickel(II) acetate as a metal ion mediator. A mixture of methacrylic acid (MAA), ethylene glycol dimethacrylate (EGDMA), tetrahydrofuran (THF) - methanol (3:1 v/v) as a solvent and Darocur (R) 1173 (2-hydroxy-2-methyl-1-phenyl-propan-1-one) as a photoinitiator was polymerized on a track-etched membrane (pores 0.4 mu m) used as a support. The polymer formed regular layers on both sides of the membrane and filled the pores. The highest initial flux of the template of 1.8 . 10(-7) mol . cm(-2) . h(-1) was observed for its diffusion from THF/acetate buffer (20:80, v/v) into THF. Membranes polymerized with nickel(II) were both more permeable and more selective. The maximum selectivity factors, calculated by using percent permeation, were 4.5 (quercetin/rutin) and 4.9 (quercetin/naringenin).
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