Organo‐Silica Sol–Gel Materials

Abstract

Introduction The Silica Sol–Gel Process and Silica Sol–Gel Materials Direct Entrapment of Organic and Bioorganic Molecules in Sol–Gel Matrices Covalent Entrapment of Organic Functional Groups Organic/Inorganic Sol–Gel Copolymerizations Photochemistry, Photophysics and Optics of Doped Sol–Gel Materials Concluding Remark Acknowledgments

Waterborne chitosan–epoxysilane hybrid pretreatments for corrosion protection of zinc

“…[27][28][29][30][31][32] Chitosan-silane hybrids have been shown to exhibit biocompatibility for proliferation of osteoblastic cell lines: cells cultured on chitosan-silane hybrids exhibited increased alkaline phosphatase activity compared to cells cultured on unmodified chitosan membranes. 27 Additionally, there are attempts to combine chitosan with minerals to obtain composites for applications in tissues engineering, due to the ability of chitosan to complex calcium cations and to form porous films that permit migration of cells into the film.…”

Amorphous and ordered organosilicas functionalized with amine groups as sorbents of platinum (II) ions

“…In particular porous materials based on silica are widely exploited nowadays in many fields including adsorption, catalysis, sensors, membranes (Sakka 2005;Shea et al 2004;Collinsona 1999). The wide potentialities of the sol-gel method were demonstrated at the end of the past century by the synthesis of silicas functionalized with the groups capable of complexation (Avnir et al 1998;Feng et al 1997). The functional surface layer is a precise tool for affecting the properties of xerogels, for example, sorption characteristics, due to the possibilities of varying both the nature of the functional groups in such a layer and the porous structure.…”

Erratum to: Organic–inorganic hybrid melting gels

“…Since then the number of hybrid organic-inorganic combinations has increased rapidly [1]. Generally, organic-inorganic materials are classified in two broad categories: materials where the organic and inorganic components are embedded one within the other and display weak bonds (Class I), and materials where there are strong covalent bonds between the inorganic and organic components (Class II) [10].…”

“…Figure 1 is a schematic of the number of reactive groups (NRG), as the ethoxy group on TEOS is substituted once by methyl, and twice by methyl. Substituting groups, which have been studied, include methyl, ethyl, phenyl, vinyl and many others [1]. Vinyl groups have been used because it is possible to polymerize the vinyl groups with UV irradiation.…”