Generalized Synthesis of Mesoporous Rare Earth Oxide Thin Films through Amphiphilic Ionic Block Copolymer Templating

Authors

  • Ying Xiao,

    1. Polymers and Composites Division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 519 Zhuangshi Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China, Fax: +86-574-86685186, http://www.nimte.ac.cn/
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  • Shusen You,

    1. State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, 100029 Beijing, P. R. China, http://www.cmse.buct.edu.cn
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  • Yuan Yao,

    1. Physik-Department, Lehrstuhl für Funktionelle Materialien, TU München, James-Franck-Str. 1, 85748 Garching, Germany
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  • Tao Zheng,

    1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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  • Chen Lin,

    1. Physik-Department, Lehrstuhl für Funktionelle Materialien, TU München, James-Franck-Str. 1, 85748 Garching, Germany
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  • Stephan V. Roth,

    1. Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany
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  • Peter Müller-Buschbaum,

    1. Physik-Department, Lehrstuhl für Funktionelle Materialien, TU München, James-Franck-Str. 1, 85748 Garching, Germany
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  • Werner Steffen,

    1. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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  • Ling-Dong Sun,

    1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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  • Chun-Hua Yan,

    1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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  • Jochen S. Gutmann,

    1. Department of Chemistry and Center for Nanointegration Duisburg–Essen (CeNIDE), University of Duisburg–Essen, Campus Essen, 45117 Essen, Germany
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  • Meizhen Yin,

    1. State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, 100029 Beijing, P. R. China, http://www.cmse.buct.edu.cn
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  • Jun Fu,

    1. Polymers and Composites Division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 519 Zhuangshi Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China, Fax: +86-574-86685186, http://www.nimte.ac.cn/
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  • Ya-Jun Cheng

    1. Polymers and Composites Division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 519 Zhuangshi Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China, Fax: +86-574-86685186, http://www.nimte.ac.cn/
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Abstract

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 La2O3, Eu2O3, Tb2O3, and Yb2O3 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.

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