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Materials Surgery – Reactivity Differences of Organic Groups in Hybrids
Author(s) -
Polarz Sebastian,
Jeremias Felix,
Haunz Ulrich
Publication year - 2011
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201100802
Subject(s) - materials science , mesoporous material , ethylene , pmos logic , mesoporous organosilica , reactivity (psychology) , hybrid material , chemical engineering , copolymer , nanotechnology , organic chemistry , polymer , mesoporous silica , composite material , catalysis , chemistry , medicine , physics , alternative medicine , transistor , quantum mechanics , voltage , pathology , engineering
Synergistic properties in hybrid materials can emerge if the inorganic matrix has an electronic influence on the organic constituents and vice versa. This paper describes the drastic effect of SiO 2 in periodically ordered mesoporous organosilica materials (PMOs) on ethylene groups. A sophisticated, in situ solid‐state NMR spectroscopy study showed that the ozonolysis of ethylene groups follows an entirely different mechanism than is normal for organic, molecular groups. Ultimately, this leads to the topotactic transformation of the PMO material. Only if silicon is not in the alpha position to the double bond does it became possible to establish a new method to functionalize PMOs materials: the targeted scission of the ethylene group and the creation of functionalized pockets inside the pore walls of the mesoporous solid.