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Issue 21, 2008
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Nitric oxide photoreleasing multilayer films

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Abstract

In this contribution we report the preparation and characterization of Langmuir–Schäfer (LS) multilayer films of a mesogen-bearing cationic amphiphile able to release nitric oxide (NO) under the exclusive control of light stimuli. The morphology and spectroscopic features of the floating films at the water–air interface are inspected by Brewster angle microscopy and UV-Vis reflection spectroscopy, respectively. Multilayer films are obtained by horizontal lifting deposition onto hydrophobized quartz substrates and characterized by UV-Vis absorption spectroscopy. The capability of these films to deliver NO is investigated by the direct monitoring of this radical species through an ultrasensitive NO electrode. The results obtained unequivocally demonstrate that the multilayers are stable in the dark but, in contrast, supply NO at nanomolar level upon illumination with visible light.

Graphical abstract: Nitric oxide photoreleasing multilayer films

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Publication details

The article was received on 06 Feb 2008, accepted on 10 Mar 2008 and first published on 28 Mar 2008


Article type: Paper
DOI: 10.1039/B802126K
Citation: J. Mater. Chem., 2008,18, 2437-2441
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    Nitric oxide photoreleasing multilayer films

    L. Valli, G. Giancane and S. Sortino, J. Mater. Chem., 2008, 18, 2437
    DOI: 10.1039/B802126K

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