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Silver nanoparticle thin films deposited on glass surface using an ionic silsesquioxane as stabilizerand as crosslinking agent

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Silver nanoparticle thin films deposited on glass surface using an ionic silsesquioxane as stabilizerand as crosslinking agent

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Título Silver nanoparticle thin films deposited on glass surface using an ionic silsesquioxane as stabilizerand as crosslinking agent
Autor Schneid, Andressa da Cruz
Pereira, Marcelo Barbalho
Horowitz, Flavio
Mauler, Raquel Santos
Matte, Carla Roberta
Klein, Manuela Poletto
Hertz, Plinho Francisco
Costa, Tania Maria Haas
Menezes, Eliana Weber de
Benvenutti, Edilson Valmir
Abstract Thin films containing silver nanoparticles homogeneously dispersed, with narrow size distribution below 10 nm, were synthesized on flat glass surface, by using an ionic silsesquioxane as stabilizer and crosslinking agent. The films can be prepared without previous functionalization of substrate surfaces and without addition of other components. The films were heat treated up to 200 ºC and characterized by ultraviolet-visible, transmission electron microscopy, atomic force microscopy, thermogravimetric analysis and ellipsometry. The films were thermally stable when heated up to 200 ºC, presenting the same thickness, and maintaining both optical and morphological properties of silver nanoparticles. The antibacterial activity of the films, containing the silver nanoparticles, was evaluated against Staphylococcus aureus by using the film applicator coating method, showing an excellent performance even after the third cycle of sterilization.
Contido em Journal of the Brazilian Chemical Society. São Paulo. Vol. 26, n. 5 (May 2015), p. 1004-1012
Assunto Atividade antimicrobiana
Filmes finos
Microscopia de força atômica
Microscopia eletronica de transmissao
Tratamento térmico
[en] Antimicrobial activity
[en] Charged organosilane
[en] Sol-gel hybrid materials
[en] Thin films
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/131400
Arquivos Descrição Formato
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