Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/201459
Type: Artigo
Title: On the distinct molecular architectures of dipping- and spray-LbL films containing lipid vesicles
Author: Aoki, Pedro H. B.
Alessio, Priscila
Volpati, Diogo
Paulovich, Fernando V.
Riul, Antonio, Jr.
Oliveira, Osvaldo N., Jr.
Constantino, Carlos J. L.
Abstract: The introduction of spraying procedures to fabricate layer-by-layer (LbL) films has brought new possibilities for the control of molecular architectures and for making the LbL technique compliant with industrial processes. In this study we show that significantly distinct architectures are produced for dipping and spray-LbL films of the same components, which included DODAB/DPPG vesicles. The films differed notably in their thickness and stratified nature. The electrical response of the two types of films to aqueous solutions containing erythrosin was also different. With multidimensional projections we showed that the impedance for the DODAB/DPPG spray-LbL film is more sensitive to changes in concentration, being therefore more promising as sensing units. Furthermore, with surface-enhanced Raman scattering (SERS) we could ascribe the high sensitivity of the LbL films to adsorption of erythrosin.
The introduction of spraying procedures to fabricate layer-by-layer (LbL) films has brought new possibilities for the control of molecular architectures and for making the LbL technique compliant with industrial processes. In this study we show that significantly distinct architectures are produced for dipping and spray-LbL films of the same components, which included DODAB/DPPG vesicles. The films differed notably in their thickness and stratified nature. The electrical response of the two types of films to aqueous solutions containing etythrosin was also different. With multidimensional projections we showed that the impedance for the DODAB/DPPG spray-LbL film is more sensitive to changes in concentration, being therefore more promising as sensing units. Furthermore, with surface-enhanced Raman scattering (SEES) we could ascribe the high sensitivity of the LbL films to adsorption of elythrosin.
Subject: Deposição camada-por-camada
Polieletrólitos
Visualização de informação
Country: Holanda
Editor: Elsevier
Citation: Materials Science & Engineering. C, Materials For Biological Applications. v. 41, p. 363-71, 2014-Aug.
Rights: fechado
Identifier DOI: 10.1016/j.msec.2014.04.067
Address: https://www.sciencedirect.com/science/article/pii/S0928493114002598
Date Issue: 2014
Appears in Collections:IFGW - Artigos e Outros Documentos

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