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Reference type: Journal
Authors: Edmiston PL, Lloyd JA, Carlson CA
Article Title: Fluorescence-based sensing of fluorene using a molecularly imprinted sol-gel material.
Publication date: 2003
Journal: Abstracts of Papers of the American Chemical Society
Volume: 225
Issue: (ANYL)
Page numbers: 164.
Alternative URL: http://oasys2.confex.com/acs/225nm/techprogram/P580036.HTM

Abstract: A sensor based on a molecularly-imprinted sol-gel material was developed to detect fluorene in aqueous solutions and the gas phase. The design was based on a hybrid non-covalent and covalent molecular imprinting scheme that resulted in the ability to chemically attach an environmentally sensitive NBD fluorophore adjacent an imprinted binding pocket. Analyte binding was detected by a change in NBD fluorescence induced by a change in polarity. The imprinted sol-gels were tested using direct binding assays to evaluate the strength and specificity of the binding interactions. Molecularly imprinted sol-gel sensing materials were deposited as films on glass supports and showed a 37.1 0.7% increase in NBD fluorescence when exposed to 100 ppb aqueous solutions of fluorene. Calibration curves showed a logarithmic response to fluorene with an average half-saturation point of 0.80 ppb. Other factors including the kinetics of the response, non-specific binding, and sensor reversibility are discussed.


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