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Three‐Dimensional Structure of Large‐Pore Mesoporous Cubic Ia $\bar 3$ d Silica with Complementary Pores and Its Carbon Replica by Electron Crystallography
Author(s) -
Sakamoto Yasuhiro,
Kim TaeWan,
Ryoo Ryong,
Terasaki Osamu
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200460449
Subject(s) - replica , mesoporous material , copolymer , bar (unit) , crystallography , mesoporous silica , materials science , crystal structure , carbon fibers , enantiomer , nanotechnology , chemistry , physics , stereochemistry , organic chemistry , composite material , composite number , art , polymer , visual arts , catalysis , meteorology
A bicontinuous cubic structure was revealed by electron crystallography on a large‐pore mesoporous silica with a cubic Ia $\bar 3$ d symmetry synthesized by using a triblock copolymer as a structure‐directing agent. Its reconstructed structure (picture, left) is composed of an enantiomeric pair of interwoven three‐dimensional mesoporous networks. Ordered complementary pores form interconnections between the two main channel systems at a special flat point of the G‐surface (right).