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Reference type: Journal
Authors: Piacham T, Josell A, Arwin H, Prachayasittikul V, Ye L
Article Title: Molecularly imprinted polymer thin films on quartz crystal microbalance using a surface bound photo-radical initiator.
Publication date: 2005
Journal: Analytica Chimica Acta
Volume: 536
Issue: (1-2)
Page numbers: 191-196.
DOI: 10.1016/j.aca.2004.12.067
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-4FB3VNR-3/2/63acdb1a1d5a71b5840c4cf98d5e3ff1

Abstract: The present work aims to study preparation of thin MIP films on a gold-coated QCM resonator in a well-controlled and reproducible manner. A surface-bound photo-radical initiator was used to furnish an imprinting polymerization in a dilute solution of template, functional monomer and crosslinker. Prior to polymerization, the photo-initiator was covalently coupled to a self-assembled monolayer of carboxyl terminated alkanethiol on a gold surface. With this approach we were able to control the thickness of the MIP film to be below 50 nm, where the selective recognition of target analytes can be easily detected by the underlying quartz crystal resonator. When used in a flow injection analysis system, the assembled QCM sensor generated a large frequency change (>30 Hz) upon encountering a small amount of analyte (0.19 mM). The sensor had a very short response time (S)-propranolol at a concentration higher than 0.38 mM in aqueous solution
Template and target information: (S)-propranolol
Author keywords: molecular imprinting, surface initiated polymerization, quartz crystal microbalance, propranolol


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