Premium
Single‐Source Precursors For Synthesizing Bifunctional Periodic Mesoporous Organosilicas
Author(s) -
Hunks W. J.,
Ozin G. A.
Publication year - 2005
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.200400294
Subject(s) - mesoporous organosilica , bifunctional , materials science , pmos logic , mesoporous material , copolymer , chemical engineering , poloxamer , nanotechnology , catalysis , organic chemistry , polymer , transistor , mesoporous silica , chemistry , composite material , physics , quantum mechanics , voltage , engineering
A new class of bifunctional periodic mesoporous organosilicas (PMOs) composed of organosilicate building blocks with two different silicon sites have been synthesized from the single‐source bifunctional organosilica precursors tris(triethoxysilylethyl)ethoxysilane and bis(triethoxysilylethyl)diethoxysilane, respectively denoted MT 3 ‐PMO and DT 2 ‐PMO. The synthesis of these PMOs is achieved by the co‐assembly of a triblock‐copolymer Pluronic P123 template with the bifunctional organosilica precursor under acid‐catalyzed and inorganic‐salt‐assisted conditions. After template removal through solvent extraction, the MT 3 ‐PMO and DT 2 ‐PMO so obtained show well‐ordered mesopores and display large pore diameters (6–7 nm) and pore volumes (0.6–0.8 cm 3 g –1 ) with a narrow pore‐size distribution and high surface areas (700–800 m 3 g –1 ).