Syntheses,Crystal Structures and Photophysical Properties of a Series of Cadmium(II) Coordination Polymers |
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| Authors: | Yu Xian Shu Yun Niu Prof. Jing Jin Li Ping Sun Guang Di Yang Ling Ye |
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| Affiliation: | 1. Dalian / China, Liaoning Normal University, School of Chemistry and Chemical Engineering;2. Dalian / China, Liaoning Normal University, School of Chemistry and Chemical EngineeringLiaoning Normal University, School of Chemistry and Chemical Engineering, Dalian 116029 / P. R. China, Fax: +86‐411‐82156832;3. Changchun / China, Key Laboratory of Supramolecular Structure and Materials of Ministry of Education on Jilin University |
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| Abstract: | Three cadmium(II) coordination polymers [Cd(NA)2(H2O)2]n ( 1 ), {[Cd(NA)(phen)(NO3)]·(H2O)1/2}n ( 2 ), {[Cd(NA)(CH3C6H4COO)(H2O)2]·(CH3C6H4COOH)}n ( 3 ) (HNA = nicotinic acid, phen = 1, 10‐phenanthroline) have been synthesized by hydrothermal method. Their single‐crystal structures were determined by X‐ray diffractometry. The absorption, excitation and emission spectra were investigated and all the complexes emit strong fluorescence: λemmax = 544 nm (λex = 492 nm), 1 ; λemmax = 466 nm (λex = 393 nm), 2 ; λemmax = 430 nm (λex = 313 nm), 3 . At room temperature in the solid state the fluorescence lifetimes of the complexes were investigated and the relationships between the spectra were discussed as well as the connections of luminescence and crystal structures. |
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| Keywords: | Cadmium Coordination polymers Crystal structures Luminescence properties Fluorescence lifetime |
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