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Correlation of Nitrogen Sorption and Confocal Laser Scanning Microscopy for the Analysis of Amino Group Distributions on Mesoporous Silica

Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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Materials 2011, 4(6), 1096-1103; https://doi.org/10.3390/ma4061096
Received: 18 May 2011 / Revised: 31 May 2011 / Accepted: 1 June 2011 / Published: 9 June 2011
Aminopropylalkoxysilanes are frequently used for the functionalization of mesoporous silica. The analysis of amino group distributions on arrays of silica nanochannels by a combination of nitrogen sorption and confocal laser scanning microscopy provides valuable insight into the mechanisms underlying the interaction of these silanes with mesoporous silica surfaces. Tendencies towards external surface functionalization, non-uniform distribution in the pores, and hydrolysis of the silica framework are shown to depend to a large extent on the mobility of the aminopropylalkoxysilane molecules, which can be adjusted by the number and type of alkoxy groups. View Full-Text
Keywords: mesoporous silica; nanochannels; amines; silanes; distribution; confocal microscopy; nitrogen sorption
mesoporous silica; nanochannels; amines; silanes; distribution; confocal microscopy; nitrogen sorption
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MDPI and ACS Style

Gartmann, N.; Brühwiler, D. Correlation of Nitrogen Sorption and Confocal Laser Scanning Microscopy for the Analysis of Amino Group Distributions on Mesoporous Silica. Materials 2011, 4, 1096-1103.

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