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

Materials

Nando Gartmann¹ 

[1] Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland; E-Mail

关键词: mesoporous silica;    nanochannels;    amines;    silanes;    distribution;    confocal microscopy;    nitrogen sorption;   

DOI  :  10.3390/ma4061096

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.