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Generalized Synthesis of Mesoporous Rare Earth Oxide Thin Films through Amphiphilic Ionic Block Copolymer Templating
Author(s) -
Xiao Ying,
You Shusen,
Yao Yuan,
Zheng Tao,
Lin Chen,
Roth Stephan V.,
MüllerBuschbaum Peter,
Steffen Werner,
Sun LingDong,
Yan ChunHua,
Gutmann Jochen S.,
Yin Meizhen,
Fu Jun,
Cheng YaJun
Publication year - 2013
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201201524
Subject(s) - mesoporous material , copolymer , transmission electron microscopy , thin film , ionic bonding , chemical engineering , polystyrene , amphiphile , scanning electron microscope , mesoporous organosilica , oxide , materials science , chemistry , grazing incidence small angle scattering , nanotechnology , polymer chemistry , mesoporous silica , scattering , polymer , optics , organic chemistry , ion , composite material , small angle neutron scattering , catalysis , physics , neutron scattering , engineering
A new concept to achieve the generalized synthesis of crystalline mesoporous rare earth (RE) oxide thin films templated with an ionic amphiphilic block copolymer is developed. Mesoporous La 2 O 3 , Eu 2 O 3 , Tb 2 O 3 , and Yb 2 O 3 thin films as representatives of the light and heavy RE groups are synthesized by using polystyrene‐ block ‐poly(acrylic acid) (PS‐ b ‐PAA) as a templating agent. The impact of the concentration of PS‐ b ‐PAA on the morphologies of the mesopores is investigated. The local and long‐range lateral structures, vertical structures, and crystallinities of the mesoporous thin films are probed by scanning electron microscopy, atomic force microscopy, grazing‐incidence small‐angle X‐ray scattering, X‐ray reflectivity, and transmission electron microscopy. The mechanism of formation of the mesoporous RE oxide thin films is discussed.