Spectroscopic investigations, characterization and chemical sensor application of composite Langmuir-Schafer films of anthocyanins and oligophenylenevinylene derivatives

被引：16

作者：

Bettini, S. ^{[1
]}

Valli, L. ^{[1
]}

Santino, A. ^{[2
]}

Martinelli, C. ^{[3
]}

Farinola, G. M. ^{[3
]}

Cardone, A. ^{[4
]}

Sgobba, V. ^{[5
,6
]}

Giancane, G. ^{[1
]}

机构：

[1] Univ Salento, Dipartimento Ingn Innovaz, I-73100 Lecce, Italy

[2] CNR, Inst Sci Food Prod, Unit Lecce, I-73100 Lecce, Italy

[3] Univ Bari, Dipartimento Chim, I-70125 Bari, Italy

[4] Univ Bari, Dipartimento Chim, Ist Chim Composti OrganoMet, CNR ICCOM, I-70125 Bari, Italy

[5] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91058 Erlangen, Germany

[6] Univ Erlangen Nurnberg, Interdisciplinary Ctr Mol Mat, D-91058 Erlangen, Germany

来源：

DYES AND PIGMENTS | 2012年 / 94卷 / 01期

关键词：

Langmuir-Schafer films; Anthocyanin stability; Oligophenylenevinylenes; Air/water interface characterization; UV-vis spectroscopy; Herbicide sensor; STABILITY; POLYMERS; MULTILAYERS; GLYCOSIDES;

D O I：

10.1016/j.dyepig.2011.12.010

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Anthocyanins, extracted from grape skin (Vitis vinifera), were dissolved in ultrapure aqueous subphase and an oligophenylenevinylene derivative was spread on the subphase surface. Such oligomer was chosen as anionic counterpart of hydrosoluble anthocyanins in order to perform a Langmuir-Schafer film of the dyad. Interface interactions between oligophenylenevinylene derivative and anthocyanins were studied by Brewster angle microscopy and reflection spectroscopy. Additionally, the oligomer exhibits a chemical structure able to ensure an enhancement of the stability under UV-visible irradiations of 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 Langmuir-Schafer oligomer/anthocyanins film after exposure to 254 nm irradiation showed a remarkable increase of the film stability, probably due to the screening effect of the oligomer. Preliminary test of a Langmuir-Schafer film of oligophenylenevinylene derivative/anthocyanins as a herbicide sensor showed that sensing is completely reversible, stable and repeatable. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：156 / 162

页数：7

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