Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 121, Issue 1-3, Pages 79-83Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2009.01.006
Keywords
Mesoporous silica; Functionalization; Vapor phase deposition; Aminopropyltrimethoxysilane; Fluorescamine
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Funding
- European Commission through the Human Potential Program [MRTN-CT-2006-035884]
- Swiss National Science Foundation [200020-117591]
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The postsynthetic functionalization of mesoporous silica MCM-41 by vapor phase deposition of 3-aminopropyltrimethoxysilane is investigated as an alternative to the common practice of depositing from toluene. Particular emphasis is given to the possibility of eliminating the influence of trace water upon deposition from the vapor phase. The comparative study of samples prepared by different deposition methods requires identical degrees of functionalization. To obtain reliable information on the amount of surface-grafted aminopropyl groups, we have developed an analysis procedure based on the fluorogenic amine-derivatization reaction of fluorescamine. (C) 2009 Elsevier Inc. All rights reserved.
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