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Synthesis of a Large‐Sized Mesoporous Phosphosilicate Thin Film through Evaporation‐Induced Polymeric Micelle Assembly
Author(s) -
Li Yunqi,
Bastakoti Bishnu Prasad,
Imura Masataka,
Suzuki Norihiro,
Jiang Xiangfen,
Ohki Shinobu,
Deguchi Kenzo,
Suzuki Madoka,
Arai Satoshi,
Yamauchi Yusuke
Publication year - 2015
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201402636
Subject(s) - materials science , mesoporous material , copolymer , tetraethyl orthosilicate , micelle , chemical engineering , siloxane , evaporation , polymer chemistry , nanotechnology , organic chemistry , composite material , chemistry , catalysis , aqueous solution , thermodynamics , polymer , physics , engineering
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.