Lam A W H, Wong W T, Gao S, et al. Synthesis, crystal structure,and photophysical and magnetic properties of dimericand polymeric lanthanide complexes with benzoic acid and its derivatives [J]. Eur. J. Inorg. Chem., 2003, 2003 (1):149-163.[2] Wang F F, Yan B. Co-luminescence effect of heterometallic terbium-gadolinium hybrid molecular materials constructed by covalent grafting [J]. J. Fluoresc., 2007, 17 (4):418-426.[3] Galyametdinov Y G, Knyazev A A, Dzhabarov V I, et al. Polarized luminescence from aligned samples of nematogenic lanthanide complexes [J]. Adv. Mater., 2008, 20 (2):252-257.[4] Yang C, Sun Z F, Liu L, et al. Preparation and luminescence performance of rare earth agriculture-used light transformation composites[J]. J. Mater. Sci., 2008, 43 (5):1681-1687.[5] Lin Q, Fu L S, Zhang H J, et al. Preparation, photo- and electro-luminescence properties of novel rare earth aromatic carboxylates[J]. J. Chin. Rare Earth Soc. (中国稀土学报), 2003, 21 (1):19-22 (in Chinese).[6] Zhao Yongliang, Zhao Fengying. Strengthen effects of La3+ and Tb3+ on luminescence of Eu3+ in the dilnuclear complexes of rare earth with phthalate and dipyridyl [J]. Chin. J. Lumin.(发光学报), 2000, 21 (2):150-155 (in Chinese).[7] Barja B, Baggio R, Garland M T, et al. Crystal structures and luminescent properties of terbium(Ⅲ) carboxylates [J]. Inorg. Chim. Acta, 2003, 346 (3):187-196.[8] Wang Kunhua, Luo Chuanqiu, Zhou Xiao. Modern Instrument Analysis of Polymer [M]. Beijing: Qing Hua University Press, 2000, 39.[9] Wang J, Wang H S, Liu F Y, et al. Langmuir-Blodgett films based on europium-substituted heteropolytungstate and their luminescence properties [J]. J. Lumin., 2003, 101 (1-2):63-70.[10] Xu Xurong. Luminescence Materials and Display Technology [M]. Beijing: Chemical Industry Press, 2003, 112.[11] Chen Guozhen, Huang Xianzhi, Zheng Zhuzi, et al. Fluorescence Analysis [M]. Beijing: Science Press, 1990, 55.[12] Lin Zhihua, Zhang Hanhui, Huang Changcang, et al. Hydrothermal synthesis, crystal structure and properties of polyo-xovanadium borate H3{ 5 } 2·16H2O [J]. Acta Chimica Sinica (化学学报),2004, 62 (4):391-398 (in Chinese).