期刊
INORGANICA CHIMICA ACTA
卷 519, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2021.120278
关键词
Crystal; Dysprosium; Gadolinium; Samarium; Lanthanide
资金
- Open Foundation of the State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, CAS [20180008]
- NSF of Jiangxi Province [20202BAB204003]
A series of novel lanthanide complexes were synthesized and characterized, showing emission bands in yellow and ultraviolet region for complexes 1 and 2, and an upconversion emission band in the green region for complex 3. These emission bands are attributed to the 4f electron intrashell transitions.
Series of novel lanthanide complexes [Ln(4-carboxybenzenesulfonate)(H2O)5]nnCl (Ln = Sm (1), Gd (2), Dy (3)) have been synthesized through solvothermal reactions and the structures were characterized by single-crystal Xray diffraction. They are isostructural with a ladder-shaped one-dimensional (1-D) double chain structure. The solid-state photoluminescence measurements reveal that complexes 1 and 2 display emission bands in yellow and ultraviolet region, while complex 3 shows an upconversion emission band in the green region. These emission bands are resulted from the characteristic emissions of the 4f electron intrashell transition of the 4G5/2 -* 6HJ (J = 5/2, 7/2, 9/2; Sm(III) ions in 1), 6P5/2 -* 8S7/2 (Gd(III) ions in 2) and 4F9/2 -* 6H13/2 (Dy(III) ions in 3). Complexes 1 and 3 possess CIE (Commission Internationale de I??Eclairage) chromaticity coordinates of (0.518, 0.4806) and (0.3318, 0.6483), respectively. The CCT (Correlated Color Temperature) are 2415 K and 5609 K for complexes 1 and 3. The solid-state UV/visible diffuse reflectance spectra reveal that complexes 1, 2 and 3 have optical band gaps of 1.5 eV, 4.6 eV and 3.3 eV, respectively.
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