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Preparation, Crystal Structure and Characterization of One-Dimensional Europium-Doped Titanium-Oxo Cluster of Ti4Eu2O4(OOCC6H5)14
Author NameAffiliationE-mail
WU Nian-Nian School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China  
ZHAO Ming-Ming School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China  
LIU Sheng-Jun School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243032, China 		lsj1990@mail.ustc.edu.cn 
LIU Bo School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China liuchem@ustc.edu.cn; 
Abstract: Single crystal Ti4Eu2O4(OOCC6H5)14 (denoted as POTi4Eu2) was prepared by the solvothermal method, via the strategy of concurrently fully carboxylate-coordinating and the lanthanide-Eu(Ⅲ)-ion-doping. Characterizations of POTi4Eu2 have been performed by elemental analysis, thermogravimetric analysis, solid-state UV-Vis absorption spectroscopy and FT-IR, and its particular optical properties have been shown by liquid-state fluorescence spectra, and solid-state fluorescence lifetime. The structure of POTi4Eu2 contains four TiO6 octahedrons, two EuO8 dodeca-hedrons and 14 bridged bidentate benzoic acid ligands. The cluster core Ti4Eu2 is stabilized by 14 benzoic acid ligands. The 14 benzoic acid ligands are coordinated by bidentate bridges and are distributed around the core clusters of the titanium oxide cluster. The adjacent clusters are bridged by benzoic acid ligands to form a one-dimensional chain structure. Thermogravimetric analysis data show that the structure of single crystal POTi4Eu2 could remain stable within 256℃ in air. The average fluorescence lifetime of single crystal POTi4Eu2 was 1.63 ms.
Keywords: polyoxotitanates  Eu(Ⅲ)-ion-doping  solvothermal method  single crystal  optical properties
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WU Nian-Nian,ZHAO Ming-Ming,LIU Sheng-Jun,LIU Bo.Preparation, Crystal Structure and Characterization of One-Dimensional Europium-Doped Titanium-Oxo Cluster of Ti4Eu2O4(OOCC6H5)14[J].Chinese Journal of Inorganic Chemistry,2020,36(11):2080-2086.
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Chinese Journal of Inorganic Chemistry