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Reference type: Journal
Authors: Elmlund L, Suriyanarayanan S, Wiklander JG, Aastrup T, Nicholls IA
Article Title: Biotin selective polymer nano-films.
Publication date: 2014
Journal: Journal of Nanobiotechnology
Volume: 12
Issue: (March)
Page numbers: Article No 8.
DOI: 10.1186/1477-3155-12-8
Alternative URL: http://www.jnanobiotechnology.com/content/12/1/8/abstract

Abstract: Background The interaction between biotin and avidin is utilized in a wide range of assay and diagnostic systems. A robust material capable of binding biotin should offer scope in the development of reusable assay materials and biosensor recognition elements. Results Biotin-selective thin (3-5 nm) films have been fabricated on hexadecanethiol self assembled monolayer (SAM) coated Au/quartz resonators. The films were prepared based upon a molecular imprinting strategy where N,N'-methylenebisacrylamide and 2-acrylamido-2-methylpropanesulfonic acid were copolymerized and grafted to the SAM-coated surface in the presence of biotin methyl ester using photoinitiation with physisorbed benzophenone. The biotinyl moiety selectivity of the resonators efficiently differentiated biotinylated peptidic or carbohydrate structures from their native counterparts. Conclusions Molecularly imprinted ultra thin films can be used for the selective recognition of biotinylated structures in a quartz crystal microbalance sensing platform. These films are stable for periods of at least a month. This strategy should prove of interest for use in other sensing and assay systems.
Template and target information: biotin
Author keywords: molecularly imprinted polymer, Biotinylated compounds, Photoinitiated graft co-polymerization, Quartz crystalmicrobalance (QCM) sensors, Sandwich-casting method

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