Synthesis and characterization of covalently interconnected phosphazene - Silicate hybrid network membranes

Youngkyu Chang; Harry R. Allcock

doi:10.1021/cm050122w

Synthesis and characterization of covalently interconnected phosphazene - Silicate hybrid network membranes

Youngkyu Chang, Harry R. Allcock

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9 Scopus citations

Abstract

A method for the cross-linking of water-soluble polyphosphazenes via a sol-gel condensation is described. Precursor polymers were produced by covalently binding an organosilicon alkoxide to the terminus of pendent oligoethylenoxy chains on poly[bis(methoxyethoxyethoxy)phosphazene]. Subsequent hydrolysis and condensation of these precursors yielded hybrid silicate networks with covalently integrated polyphosphazenes. The hybrid networks showed high water uptake values (up to 1570 wt %). The release of Rose Bengal, Biebrich Scarlet, and FITC-albumin from the phosphazene-silicate matrix was studied over time as a function of network density. These hydrogels are of interest as potential materials for use in membranes or biomaterials.

Original language	English (US)
Pages (from-to)	4449-4454
Number of pages	6
Journal	Chemistry of Materials
Volume	17
Issue number	17
DOIs	https://doi.org/10.1021/cm050122w
State	Published - Aug 23 2005

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm050122w

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abstract = "A method for the cross-linking of water-soluble polyphosphazenes via a sol-gel condensation is described. Precursor polymers were produced by covalently binding an organosilicon alkoxide to the terminus of pendent oligoethylenoxy chains on poly[bis(methoxyethoxyethoxy)phosphazene]. Subsequent hydrolysis and condensation of these precursors yielded hybrid silicate networks with covalently integrated polyphosphazenes. The hybrid networks showed high water uptake values (up to 1570 wt %). The release of Rose Bengal, Biebrich Scarlet, and FITC-albumin from the phosphazene-silicate matrix was studied over time as a function of network density. These hydrogels are of interest as potential materials for use in membranes or biomaterials.",

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T1 - Synthesis and characterization of covalently interconnected phosphazene - Silicate hybrid network membranes

AU - Chang, Youngkyu

AU - Allcock, Harry R.

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N2 - A method for the cross-linking of water-soluble polyphosphazenes via a sol-gel condensation is described. Precursor polymers were produced by covalently binding an organosilicon alkoxide to the terminus of pendent oligoethylenoxy chains on poly[bis(methoxyethoxyethoxy)phosphazene]. Subsequent hydrolysis and condensation of these precursors yielded hybrid silicate networks with covalently integrated polyphosphazenes. The hybrid networks showed high water uptake values (up to 1570 wt %). The release of Rose Bengal, Biebrich Scarlet, and FITC-albumin from the phosphazene-silicate matrix was studied over time as a function of network density. These hydrogels are of interest as potential materials for use in membranes or biomaterials.

AB - A method for the cross-linking of water-soluble polyphosphazenes via a sol-gel condensation is described. Precursor polymers were produced by covalently binding an organosilicon alkoxide to the terminus of pendent oligoethylenoxy chains on poly[bis(methoxyethoxyethoxy)phosphazene]. Subsequent hydrolysis and condensation of these precursors yielded hybrid silicate networks with covalently integrated polyphosphazenes. The hybrid networks showed high water uptake values (up to 1570 wt %). The release of Rose Bengal, Biebrich Scarlet, and FITC-albumin from the phosphazene-silicate matrix was studied over time as a function of network density. These hydrogels are of interest as potential materials for use in membranes or biomaterials.

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Synthesis and characterization of covalently interconnected phosphazene - Silicate hybrid network membranes

Abstract

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