title: Functional group distributions on mesoporous silica.
abstract: Most applications of mesoporous silica require some degree of functionalization. The surface of porous materials can be divided into external and internal (pore) surfaces, and in many cases, a selective functionalization of these surface subsections is desired. This short review outlines our recent work in this field and focuses on the postsynthetic functionalization of mesoporous silica with aminopropylalkoxysilanes and on the analysis of the respective functional group distributions by confocal laser scanning microscopy. Methods to obtain an amino-functionalized external surface and functional group gradients on the pore surface are reported. Arrays of silica nanochannels (ASNCs) serve as a model system for mesoporous silica.
authors.affiliation: University of Zürich, Institute of Inorganic Chemistry, Winterthurerstrasse 190, CH-8057 Zürich.
authors.forename: Nando
authors.initials: N
authors.lastname: Gartmann
authors.forename: Dominik
authors.initials: D
authors.lastname: Brühwiler
mesh_terms: D018613:Microscopy, Confocal; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D011437:Propylamines; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000138:chemical synthesis*; D013499:Surface Properties
chemical_list: D011437:Propylamines; D012821:Silanes; D012822:Silicon Dioxide; C477625:amino-propyl-triethoxysilane