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Smart tailoring of the surface chemistry in GPTMS hybrid organic–inorganic films

Carboni, Davide and Pinna, Alessandra and Malfatti, Luca and Innocenzi, Plinio (2014) Smart tailoring of the surface chemistry in GPTMS hybrid organic–inorganic films. New Journal of Chemistry, Vol. 38 (4), p. 1635-1640. ISSN 1144-0546. eISSN 1369-9261. Article.

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DOI: 10.1039/C3NJ01385E

Abstract

Hybrid films prepared from 3-glycidoxypropyltrimethoxysilane have been widely used as organic–inorganic materials for several applications. Tailoring the coating surface should disclose new possibilities of applications in biomaterials as functional interfaces for cells and enzymes. In this work we have designed the synthesis of 3-glycidoxypropyltrimethoxysilane hybrid films to modify the surface properties without additional surface functionalization steps. The pH of the precursor sols has been changed from highly basic to acidic and neutral pH and then the sols have been used to deposit highly transparent films. The analysis by infrared spectroscopy has shown that the synthetic conditions allow tuning the degree of condensation of the silica network and the percentage of epoxide ring opening. A precise control of these two parameters enables the formation of a smart surface library where hydroxyl or epoxide groups or the mixed presence of both change the hydrophobicity of the surface and thus its capability of binding molecules and nano-objects.

Item Type:Article
ID Code:10226
Status:Published
Refereed:Yes
Uncontrolled Keywords:GPTMS, hybrid organic-inorganic films, smart surfaces
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Architettura, Design e Urbanistica > LMNT-Laboratorio di Scienza dei Materiali e NanoTecnologie
Publisher:Royal Society of Chemistry
ISSN:1144-0546
eISSN:1369-9261
Copyright Holders:©The Royal Society of Chemistry and the Centre National de la Recherche Scientifique
Deposited On:27 Oct 2014 10:31

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