title: A Mesoporous Superlattice Consisting of Alternately Stacking Interstitial Nanospace within Binary Silica Colloidal Crystals.
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.
authors.affiliation: Waseda Institute for Advanced Study, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo, 169-8050, Japan. y-kuroda@aoni.waseda.jp.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Kuroda
authors.affiliation: Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Shimbo
authors.affiliation: PRESTO, Japan, Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.|Department of Physics, Osaka University, 1-1 Machikaneyamacho, Toyonaka-shi, Osaka, 560-0043, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Sakamoto
authors.affiliation: Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Wada
authors.affiliation: Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan. kuroda@waseda.jp.|Kagami Memorial Research Institute for Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan. kuroda@waseda.jp.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Kuroda
keywords: colloidal crystals; mesoporous materials; nanoparticles; silica; thin films