General predictive syntheses of cubic, hexagonal, and lamellar silica and titania mesostructured thin films

被引：637

作者：

Alberius, PCA

Frindell, KL

Hayward, RC

Kramer, EJ

Stucky, GD ^{[1
]}

Chmelka, BF

机构：

[1] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA

来源：

CHEMISTRY OF MATERIALS | 2002年 / 14卷 / 08期

关键词：

D O I：

10.1021/cm011209u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Well-ordered mesostructured silica and titania films were prepared using poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer species (Pluronic P123) as the structure-directing agents. By varying the volume ratio between the copolymer and inorganic components of the precursor solution, silica and titania thin films with cubic, 2D hexagonal, and lamellar mesostructures were prepared. The regions over which the three phases were obtained correspond well with those of the water-block copolymer binary phase diagram when considered in terms of the volume fraction of copolymer incorporated. In particular, a cubic mesostructure with crystalline TiO2 (anatase) in the walls, stable to 400 degreesC, was synthesized.

引用

页码：3284 / 3294

页数：11

共 71 条

[1] A record nine different phases (four cubic, two hexagonal, and one lamellar lyotropic liquid crystalline and two micellar solutions) in a ternary isothermal system of an amphiphilic block copolymer and selective solvents (water and oil) [J].