Upconversion Photoluminescence and Energy Transfer Mechanism of a Novel Terbium-mercury Compound  

作　　者：LIN Wei-Sheng KUANG Han-Mao LUO Hui CHEN Wen-Tong 林维晟;匡汉茂;罗辉;陈文通(Department of Ecological and Resources Engineering,Fujian Key Laboratory of Eco-industrial Green Technology,Wuyi University,Wuyishan,Fujian 354300,China;Institute of Applied Chemistry,School of Chemistry and Chemical Engineering,Jiangxi Province Key Laboratory of Coordination Chemistry,Jinggangshan University,Ji'an 343009,China;State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China)

机构地区：[1]Department of Ecological and Resources Engineering,Fujian Key Laboratory of Eco-industrial Green Technology,Wuyi University,Wuyishan,Fujian 354300,China [2]Institute of Applied Chemistry,School of Chemistry and Chemical Engineering,Jiangxi Province Key Laboratory of Coordination Chemistry,Jinggangshan University,Ji'an 343009,China [3]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China

出　　处：《Chinese Journal of Structural Chemistry》2019年第6期1012-1020,共9页结构化学（英文）

基　　金：Supported by the NSF of China(21361013,31460488);NSF of Fujian(2018J01447);Jiangxi Provincial Department of Education’s Item of Science and Technology(GJJ170637);the Open Foundation(20180008)of State Key Laboratory of Structural Chemistry

摘　　要：A novel terbium-mercury complex [Tb(IA)3(H3 O)2]2 n(2 n HgCl4)(n Hg2 Cl5)·n H3 O· 3 n H2 O(1, HIA = isonicotinic acid) has been synthesized through hydrothermal reactions and characterized by single-crystal X-ray diffraction. Complex 1 crystallizes in the C2/c space group of monoclinic system with a = 24.2347(5), b = 20.8342(6), c = 15.3206(3) ?, β = 128.257(2)°, V = 6074.3(2) ?3, C36H41Cl13Hg4N6O20Tb2, Mr = 2458.80, Z = 4, Dc = 2.689 g/cm3, μ(Mo Kα) = 13.014 mm–1 and F(000) = 4520. The crystal structure of 1 is characterized by a one-dimensional(1-D) chain-like structure. Solid-state UV/Vis diffuse reflectance spectrum reveals the existence of a wide optical band gap of 3.36 eV. Solid-state photoluminescence experiment uncovers that it shows reddish brown upconversion emission. The emission bands are originated from the characteristic emission of the 4 f electrons intrashell transition of the 5D4 → 7 FJ(J = 6, 5, 4) of the Tb3+ ions. Energy transfer mechanism is explained by the energy level diagram of the Tb3+ ion and the isonicotinic acid ligand. It shows a remarkable CIE chromaticity coordinates(0.4158, 0.4005).

关 键 词：crystal CIE energy transfer MECHANISM PHOTOLUMINESCENCE TERBIUM 

分 类 号：TQ[化学工程]