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Issue 5, 2008
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Thin chitosan films as a platform for SPR sensing of ferric ions

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Abstract

Homogeneous chitosan films of various thicknesses (10–65 nm) were deposited on thin gold films through spin coating. The resulting interfaces were characterized using surface plasmon resonance (SPR), AFM, profilometry and cyclic voltammetry. The strong chelating properties of chitosan films to Fe3+ were investigated using cyclic voltammetry. Through SPR measurements, an affinity constant between chitosan and Fe3+ of 9.49 × 105 M−1 was determined with a detection limit as low as 250 ppb.

Graphical abstract: Thin chitosan films as a platform for SPR sensing of ferric ions

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Publication details

The article was received on 15 Nov 2007, accepted on 10 Mar 2008 and first published on 26 Mar 2008


Article type: Paper
DOI: 10.1039/B717736D
Citation: Analyst, 2008,133, 673-677
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    Thin chitosan films as a platform for SPR sensing of ferric ions

    H. A. McIlwee, C. L. Schauer, V. G. Praig, R. Boukherroub and S. Szunerits, Analyst, 2008, 133, 673
    DOI: 10.1039/B717736D

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