title: Synthesis of a large-sized mesoporous phosphosilicate thin film through evaporation-induced polymeric micelle assembly.
abstract: A triblock copolymer, poly(styrene-b-2-vinyl pyridine-b-ethylene oxide) (PS-b-P2VP-b-PEO) was used as a soft template to synthesize large-sized mesoporous phosphosilicate thin films. The kinetically frozen PS core stabilizes the micelles. The strong interaction of the inorganic precursors with the P2VP shell enables the fabrication of highly robust walls of phosphosilicate and the PEO helps orderly packing of the micelles during solvent evaporation. The molar ratio of phosphoric acid and tetraethyl orthosilicate is crucial to achieve the final mesostructure. The insertion of phosphorus species into the siloxane network is studied by (29) Si and (31) P MAS NMR spectra. The mesoporous phosphosilicate films exhibit steady cell adhesion properties and show great promise as excellent materials in bone-growth engineering applications.
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan) http://www.yamauchi-labo.com; Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555 (Japan).
authors.forename: Yunqi
authors.initials: Y
authors.lastname: Li
authors.forename: Bishnu Prasad
authors.initials: BP
authors.lastname: Bastakoti
authors.forename: Masataka
authors.initials: M
authors.lastname: Imura
authors.forename: Norihiro
authors.initials: N
authors.lastname: Suzuki
authors.forename: Xiangfen
authors.initials: X
authors.lastname: Jiang
authors.forename: Shinobu
authors.initials: S
authors.lastname: Ohki
authors.forename: Kenzo
authors.initials: K
authors.lastname: Deguchi
authors.forename: Madoka
authors.initials: M
authors.lastname: Suzuki
authors.forename: Satoshi
authors.initials: S
authors.lastname: Arai
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamauchi
mesh_terms: D002448:Cell Adhesion; D005026:Ethylene Glycols / Q000737:chemistry; D006367:HeLa Cells; D006801:Humans; D008823:Micelles; D011137:Polystyrenes / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D016062:Porosity; D017640:Silicates / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D005026:Ethylene Glycols; D008823:Micelles; D011137:Polystyrenes; D011145:Polyvinyls; D017640:Silicates; C507265:poly(styrene-b-2-vinyl pyridine-b-ethylene oxide)
keywords: block copolymers; mesoporous materials; micelles; phosphosilicates; self-assembly