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Fluorescence anisotropy studies of molecularly imprinted polymers
Department of Chemistry, Portland State University.
2006 (English)In: Luminescence (Chichester, England Print), ISSN 1522-7235, E-ISSN 1522-7243, Vol. 21, no 1, 7-14 p.Article in journal (Refereed) Published
Abstract [en]

A molecularly imprinted polymer (MIP) is a biomimetic material that can be used as a biochemical sensing element. We studied the steady-state and time-resolved fluorescence and fluorescence anisotropy of anthracene-imprinted polyurethane. We compared MIPs with imprinted analytes present, MIPs with the imprinted analytes extracted, MIPs with rebound analytes, non-imprinted control polymers (non-MIPs) and non-MIPs bound with analytes to understand MIP’s binding behaviour. MIPs and non-MIPs had similar steady-state fluorescence anisotropy in the range 0.11-0.24. Anthracene rebound in MIPs and non-MIPs had a fluorescence lifetime of tau = 0.64 ns and a rotational correlation time of 0, = 1.2-1.5 ns, both of which were shorter than that of MIPs with imprinted analytes present (tau = 2.03 ns and phi(F) = 2.7 ns). The steady-state anisotropy of polymer solutions increased exponentially with polymerization time and might be used to characterize the polymerization extent in situ.

Place, publisher, year, edition, pages
2006. Vol. 21, no 1, 7-14 p.
Keyword [en]
steady-state anisotropy; time-resolved anisotropy; time-resolved fluorescence; polymerization kinetics; anthracene sensing
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-77366DOI: 10.1002/bio.874ISI: 000235695600002OAI: diva2:492030
QC 20120306Available from: 2012-02-07 Created: 2012-02-06 Last updated: 2012-03-06Bibliographically approved

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Yan, Mingdi
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