Issue 21, 2008
From the journal:

Journal of Materials Chemistry

Nitric oxide photoreleasing multilayer films

Ludovico Valli,*a   Gabriele Giancanea  and  Salvatore Sortino*b  

* Corresponding authors

a Dipartimento di Ingegneria dell'Innovazione, Università degli Studi del Salento, I-73100 Lecce, Italy
E-mail: ludovico.valli@unile.it

b Dipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 8, I-95125 Catania, Italy
E-mail: ssortino@unict.it

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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Article information

DOI
https://doi.org/10.1039/B802126K
Article type
Paper
Submitted
06 Feb 2008
Accepted
10 Mar 2008
First published
28 Mar 2008

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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