Abstract

Anthocyanins, extracted from grape skin (Vitis vinifera), were dissolved in ultrapure aqueous subphaseand an oligophenylenevinylene derivative was spread on the subphase surface. Such oligomer waschosen as anionic counterpart of hydrosoluble anthocyanins in order to perform a LangmuireSchäferfilm of the dyad. Interface interactions between oligophenylenevinylene derivative and anthocyaninswere studied by Brewster angle microscopy and reflection spectroscopy. Additionally, the oligomerexhibits a chemical structure able to ensure an enhancement of the stability under UVevisible irradiationsof the film of the dyad without any variation of the natural pigment absorption in the visible range.The visible spectra of cast anthocyanins film and LangmuireSchäfer oligomer/anthocyanins film afterexposure to 254 nm irradiation showed a remarkable increase of the film stability, probably due to thescreening effect of the oligomer. Preliminary test of a LangmuireSchäfer film of oligophenylenevinylenederivative/anthocyanins as a herbicide sensor showed that sensing is completely reversible, stable andrepeatable.

Autore Pugliese

• Santino Angelo , Cardone Antonio

Tutti gli autori

• Bettini S.; Valli L.; Santino A.; Martinelli C.; Farinola G.M.; Cardone A. ; Sgobba V.; Giancane G.

Titolo volume/Rivista

Dyes and pigments

Anno di pubblicazione

2012

ISSN

0143-7208

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile