TY - JOUR
T1 - Polarities of sol-gel-derived ormosils and of their interfaces with solvents
AU - Rottman, C.
AU - Grader, G.
AU - Avnir, D.
PY - 2001
Y1 - 2001
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0034783387&partnerID=8YFLogxK
U2 - 10.1021/cm001238p
DO - 10.1021/cm001238p
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AN - SCOPUS:0034783387
SN - 0897-4756
VL - 13
SP - 3631
EP - 3634
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 10
ER -