A Mesoporous Superlattice Consisting of Alternately Stacking Interstitial Nanospace within Binary Silica Colloidal Crystals

Yoshiyuki Kuroda; Yosuke Shimbo; Yasuhiro Sakamoto; Hiroaki Wada; Kazuyuki Kuroda

doi:10.1002/anie.201605027

A Mesoporous Superlattice Consisting of Alternately Stacking Interstitial Nanospace within Binary Silica Colloidal Crystals

Angew Chem Int Ed Engl. 2016 Aug 26;55(36):10702-6. doi: 10.1002/anie.201605027. Epub 2016 Jul 28.

Authors

Yoshiyuki Kuroda¹, Yosuke Shimbo², Yasuhiro Sakamoto^{3

4}, Hiroaki Wada², Kazuyuki Kuroda^{5

6}

Affiliations

¹ Waseda Institute for Advanced Study, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo, 169-8050, Japan. y-kuroda@aoni.waseda.jp.
² Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.
³ PRESTO, Japan, Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.
⁴ Department of Physics, Osaka University, 1-1 Machikaneyamacho, Toyonaka-shi, Osaka, 560-0043, Japan.
⁵ Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan. kuroda@waseda.jp.
⁶ Kagami Memorial Research Institute for Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan. kuroda@waseda.jp.

PMID: 27466788
DOI: 10.1002/anie.201605027

Abstract

A novel class of nonclassical structures of mesoporous silica, namely a binary nanoparticle mesoporous superlattice (BNMS), is obtained by the assembly of silica nanospheres of different sizes into a binary colloidal crystal. The colloidal crystal has a CrB-type structure and consists of alternate stacks of unary fcc and binary AlB2 -type structures along the b axis and has four types of interstitial mesopores. The BNMS can be deposited on a substrate by dip coating to form an oriented thin film in which the direction of the superstructure (b axis) is perpendicular to the substrate.

Keywords: colloidal crystals; mesoporous materials; nanoparticles; silica; thin films.

Publication types

Research Support, Non-U.S. Gov't