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A 2D‐Rectangular p 2 gg Silica Mesoporous Crystal with Elliptical Mesopores: An Intermediate Phase of Chiral and Lamellar Mesostructures
Author(s) -
Qiu H.,
Sakamoto Y.,
Terasaki O.,
Che S.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200700809
Subject(s) - materials science , mesoporous material , lamellar structure , anisotropy , mesoporous silica , hexagonal crystal system , chemical engineering , cationic polymerization , pulmonary surfactant , lamellar phase , hexagonal phase , nanotechnology , phase (matter) , mesoporous organosilica , liquid crystal , crystallography , composite material , organic chemistry , optics , catalysis , polymer chemistry , optoelectronics , chemistry , engineering , physics
By adjusting the basicity of the reaction mixture in the cationic surfactant templating route, a systematic change from 2D‐hexagonal chiral to 2D‐rectangular p 2 gg to a lamellar silica mesostructure is precisely controlled. Detailed characterization shows that the novel 2D‐rectangular p 2 gg silica mesoporous crystal exhibits elliptical mesopores peculiarly stacked with varying anisotropy on a 2D‐hexagonal lattice, as shown in the figure.