Generalized Synthesis of Mesoporous Rare Earth Oxide Thin Films through Amphiphilic Ionic Block Copolymer Templating. Issue 8 (1st February 2013)

• Record Type: Journal Article
• Authors: Xiao, Ying; You, Shusen; Yao, Yuan; Zheng, Tao; Lin, Chen; Roth, Stephan V.; Müller‐Buschbaum, Peter; Steffen, Werner; Sun, Ling‐Dong; Yan, Chun‐Hua; Gutmann, Jochen S.; Yin, Meizhen; Fu, Jun; Cheng, Ya‐Jun
• Is Part Of: European journal of inorganic chemistry. Issue 8(2013)
• Page Start: 1251
• Page End: 1257
• Publication Date: 2013-02-01
• Subjects: Block copolymers -- Self‐assembly­ -- Thin films -- Mesoporous materials -- Sol–gel processes; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201201524
• Languages: English
• ISSNs: 1434-1948

Abstract

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 La2 O3, Eu2 O3, Tb2 O3, and Yb2 O3 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. Abstract : A strategy to achieve the generalized synthesis of mesoporous rare earth oxide thin films is developed by using an amphiphilic ionic block copolymer of PS‐ b ‐PAA as a templating agent.