On The Distinct Molecular Architectures Of Dipping- And Spray-lbl Films Containing Lipid Vesicles.


Autoria(s): Aoki, Pedro H B; Alessio, Priscila; Volpati, Diogo; Paulovich, Fernando V; Riul, Antonio; Oliveira, Osvaldo N; Constantino, Carlos J L
Contribuinte(s)

UNIVERSIDADE DE ESTADUAL DE CAMPINAS

Data(s)

01/08/2014

27/11/2015

27/11/2015

Resumo

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.

41

363-71

Identificador

Materials Science & Engineering. C, Materials For Biological Applications. v. 41, p. 363-71, 2014-Aug.

1873-0191

10.1016/j.msec.2014.04.067

http://www.ncbi.nlm.nih.gov/pubmed/24907772

http://repositorio.unicamp.br/jspui/handle/REPOSIP/201459

24907772

Idioma(s)

eng

Relação

Materials Science & Engineering. C, Materials For Biological Applications

Mater Sci Eng C Mater Biol Appl

Direitos

fechado

Copyright © 2014 Elsevier B.V. All rights reserved.

Fonte

PubMed

Palavras-Chave #Adsorption #Electrochemical Techniques #Electrodes #Erythrosine #Lipid Bilayers #Microscopy, Atomic Force #Phosphatidylglycerols #Quaternary Ammonium Compounds #Spectrum Analysis, Raman #Water #Erythrosin #Information Visualization #Layer-by-layer Films #Molecular Architecture #Sensing
Tipo

Artigo de periódico