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Organosilica Nanoparticles with Ordered Trimodal Porosity and Selectively Functionalized Mesopores
Author(s) -
Timm Jana,
Marschall Roland
Publication year - 2021
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202100069
Subject(s) - surface modification , mesoporous material , materials science , porosity , nanomaterials , porous medium , chemical engineering , condensation , nanotechnology , hybrid material , organic chemistry , chemistry , composite material , catalysis , physics , engineering , thermodynamics
Selective functionalization of hierarchical porous materials is of outmost importance for many different applications. A major problem of the functionalization arises from the functionalization process itself. A novel gas phase functionalization was used to modify the surface of newly developed inorganic‐organic hybrid nanomaterials with hierarchical trimodal porosity, using 3‐mercaptopropyltrimethoxysilane (MPTMS). It was found that the functionalization of mesopores of the material is possible, while the micropores of the material stay selectively non‐functionalized after oxidation. Interestingly, the initial mesopores of the material are selectively modified, up to a degree that can be reached usually only by co‐condensation approaches, which are however difficult to perform on PMO‐derived porous materials.