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Uniform Mesoporous Silica Hexagon and Its Two‐Dimensional Colloidal Crystal
Author(s) -
Lin YuShen,
Lu ChunYi David,
Hung Yann,
Mou ChungYuan
Publication year - 2009
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200900251
Subject(s) - nucleation , materials science , mesoporous silica , mesoporous material , hexagonal crystal system , dispersity , colloidal crystal , colloid , chemical physics , nanoparticle , phase (matter) , crystallography , chemical engineering , nanotechnology , chemistry , organic chemistry , polymer chemistry , catalysis , engineering
Well‐ordered mesoporous silica nanoparticles with uniform hexagonal disk shapes are synthesized under dilute alkaline conditions with a two‐step process, separating the nucleation and growth process. The resulting monodisperse hexagons can be arranged in a 2‐dimensional (2D) ordered periodical super‐structure. The hexagonal symmetry is similar in both scales. A statistical mechanical cell model is applied to analyze consequences of the interesting packing structure, including osmotic bulk modulus, phase separation and defects.