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Dehydroxylation Route to Surface Modification of Mesoporous Silicas by Using Grignard Reagents
Author(s) -
Lim Jung Eun,
Shim Chang Bo,
Kim Ji Man,
Lee Bun Yeoul,
Yie Jae Eui
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200454076
Subject(s) - mesoporous material , reagent , reactivity (psychology) , surface modification , mesoporous silica , silicon , chemical engineering , chemistry , materials science , nanotechnology , organic chemistry , catalysis , engineering , medicine , alternative medicine , pathology
Electron‐deficient silicon atoms , which are generated on a silica surface by evacuation above 900 K, are attacked by Grignard reagents (see picture). This reactivity provides a novel route for the surface modification of mesoporous silicas as the organic groups are strongly bound to the surface through the formation of SiC bonds. The pore structures of the mesoporous silicas are not destroyed by the modification.