Hybrid mesoporous MCM-41 type material containing 1,4-diazobutadiene chelate ligand in the walls
authors Ferreira, P; Nunes, CD; Vaz, PD; Bion, N; Brandao, P; Rocha, J
nationality International
journal PROGRESS IN SOLID STATE CHEMISTRY
keywords ORGANIC GROUPS; CHANNEL WALLS; SILICA; ORGANOSILICAS; FRAMEWORKS; SIEVES
abstract A new organic-inorganic hybrid mesoporous MCM-41 type material has been synthesised by co-condensation of tetraethyl orthosilicate (TEOS) and 1,4-diazobutadiene (DAB) ligand RN=C(Ph)C(Ph) NR where R = (CH2)(3)Si(OEt)(3), in the presence of cetyltrimethylammonium bromide as the structure-directing agent. Surfactant extraction using acidified methanol leaves a hybrid mesoporous material with periodical hexagonal channels, large pore volume and high specific surface area. The material was characterised by powder X-ray diffraction, transmission electron microscopy, nitrogen gas adsorption, C-13 and Si-29 solid-state NMR, FTIR, elemental and thermogravimetry. The ordered structure and the integrity of the ligand structure are preserved after the extraction step. (C) 2005 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0079-6786
year published 2005
volume 33
issue 2-4
beginning page 163
ending page 170
digital object identifier (doi) 10.1016/j.progsolidstchem.2005.11.012
web of science category Chemistry, Inorganic & Nuclear
subject category Chemistry
unique article identifier WOS:000238336900013
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