Uniform mesoporous silica hexagon and its two-dimensional colloidal crystal.
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.
Lin
Yu-Shen
YS
Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan.
Lu
Chun-Yi David
CY
Hung
Yann
Y
Mou
Chung-Yuan
CY