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Synthesis and Characterization of Chiral Benzylic Ether‐Bridged Periodic Mesoporous Organosilicas
Author(s) -
Morell Jürgen,
Chatterjee Sangam,
Klar Peter J.,
Mauder Daniel,
Shenderovich Ilja,
Hoffmann Frank,
Fröba Michael
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200800239
Subject(s) - mesoporous organosilica , characterization (materials science) , ether , materials science , mesoporous material , organic chemistry , chemistry , nanotechnology , mesoporous silica , catalysis
The first synthesis of a chiral periodic mesoporous organosilica (PMO) carrying benzylic ether bridging groups is reported. By hydrolysis and condensation of the new designed chiral organosilica precursor 1,4‐bis(triethoxysilyl)‐2‐(1‐methoxyethyl)benzene (BTEMEB) in the presence of the non‐ionic oligomeric surfactant Brij 76 as supramolecular structure‐directing agent under acidic conditions, an ordered mesoporous chiral benzylic ether‐bridged hybrid material with a high specific surface area was obtained. The chiral PMO precursor was synthesized in a four‐step reaction from 1,4‐dibromobenzene as the starting compound. The evidence for the presence of the chiral units in the organosilica precursor as well as inside the PMO material is provided by optical activity measurements.