Helvetica Chimica Acta p. 2128 - 2142 (1984)
Update date:2022-07-30
Topics:
Szabo, Katalin
Le Ha, Ngoc
Schneider, Philippe
Zeltner, Peter
sz. Kovacs, Ervin
The reaction of triorganyl(dimethylamino)silanes with surface-hydrated silicon dioxide has been studied.These silylating agents are easy to prepare from the corresponding chloro or bromosilanes with dimethylamine.The resulting products are thermally stable and relatively volatile.Reaction with surface-hydrated silicon-dioxide preparations at a50-250 deg C for 170 h yields a dense grafted layer.However, with (dimethylamino)silanes having strongly polar substituents, a retreatment of the surface-modified silica seems to be necessary in order to attain maximum coverage.
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Doi:10.1016/S0040-4039(00)00875-3
(2000)Doi:10.1021/jf034803s
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(1984)
