Polarities of sol-gel-derived ormosils and of their interfaces with solvents

C. Rottman, G. Grader, D. Avnir*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

The effective polarities of a series of organically modified sol-gel silicas and of their interfaces were probed using the solvatochromic dye ET(30) (2,6-diphenyl-4-(2,4,6-triphenyl-N-pyridino)phenolate). The series of materials was obtained by copolymerizing, in various proportions, of methyltrimethoxy-, vinyltrimethoxy-, propyltrimethoxy-, isobutyltrimethoxy- and phenyltrimethoxysilanes with tetramethoxysilane. The various doped Ormosils are solvatochromic toward organic solvents such as various alcohols and toluene. Trends in the polarity variation as a function of the monomer type, of its proportion, and of the solvent at the interface were identified and are discussed. These materials can be used as solvent sensors.

Original languageEnglish
Pages (from-to)3631-3634
Number of pages4
JournalChemistry of Materials
Volume13
Issue number10
DOIs
StatePublished - 2001

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