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Reference type: Journal
Authors: Yang DH, Ham YR, Oh MH, Yoon YS, Shin JS, Kim YD, Kim H
Article Title: Simple method for the fabrication of 1-hydroxypyrene-imprinted TiO2 gel nanofilms.
Publication date: 2009
Journal: Current Applied Physics
Volume: 9
Issue: (2, Supplement 1)
Page numbers: e136-e139.
DOI: 10.1016/j.cap.2008.12.043
Alternative URL: http://www.sciencedirect.com/science/article/B6W7T-4VTKKT5-J/2/d9513ee30f2a65147c80543d76ffc9c2

Abstract: In this study, 1-hydroxypyrene (1-OHP)-imprinted TiO2 gel films were prepared by spin coating. Incorporation of the template molecules and their removal were confirmed by UV-vis absorption spectra measurements. Guest selectivity of the 1-OHP-imprinted TiO2 film was estimated to be 1.6, 1.9, and 1.4 against benzoic acid (BA), 1-naphthol (1-NA), and 4-(phenylazo)benzoic acid (4-PABA)-imprinted TiO2 film, respectively. The 1-OHP-imprinted films demonstrated greater binding to 1-OHP than the reference imprinted films. Similar results were obtained with the BA, 1-NA, and 4-PABA-imprinted films, and their guest selectivity against the reference imprinted films amounted to 1.2-3.1 times greater. This result suggests that the binding cavity of the imprinted TiO2 gel matrices discriminates between molecular size, shape, and functional groups. Although much improvement is still needed, this imprinting process is a simple, useful, and less time-consuming way to prepare discriminative receptor cavities
Template and target information: 1-hydroxypyrene, 1-OHP
Author keywords: Polycyclic aromatic hydrocarbons (PAHs), 1-hydroxypyrene, spin coating, molecular imprinting, TiO2 gel film

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