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Easy and General Synthesis of Large‐Sized Mesoporous Rare‐Earth Oxide Thin Films by ′Micelle Assembly′
Author(s) -
Li Yunqi,
Bastakoti Bishnu Prasad,
Imura Masataka,
Dai Pengcheng,
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.201500745
Subject(s) - copolymer , mesoporous material , materials science , oxide , ethylene oxide , micelle , thin film , chemical engineering , nanotechnology , styrene , polymer chemistry , chemistry , organic chemistry , composite material , polymer , catalysis , aqueous solution , engineering , metallurgy
Large‐sized (ca. 40 nm) mesoporous Er 2 O 3 thin films are synthesized by using a triblock copolymer poly(styrene‐ b ‐2‐vinyl pyridine‐ b ‐ethylene oxide) (PS‐ b ‐P2VP‐ b ‐PEO) as a pore directing agent. Each block makes different contributions and the molar ratio of PVP/Er 3+ is crucial to guide the resultant mesoporous structure. An easy and general method is proposed and used to prepare a series of mesoporous rare‐earth oxide (Sm 2 O 3 , Dy 2 O 3 , Tb 2 O 3 , Ho 2 O 3 , Yb 2 O 3 , and Lu 2 O 3 ) thin films with potential uses in electronics and optical devices.