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Synthesis, Crystal Structures and Photophysical Properties of Manganese(Ⅱ) Complexes Based on Imidazole Ionic Liquids
Author NameAffiliationE-mail
LI Ling-Yan Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China  
LI Man Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China  
LI Lei Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China  
YU Yun-Yao Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China  
PAN Shang-Ke Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China  
PAN Jian-Guo Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China panjianguo@nbu.edu.cn 
Abstract: Two low dimensional Mn(Ⅱ) complexes, (C4H7N2)[MnCl3(H2O)] (1) and[(C4H7N2)2] [MnBr4] (2), with different structures and optical properties have been synthesized by changing the types of imidazole ionic liquids species at room temperature. The complexes 1 and 2 have been characterized by single-crystal X-ray diffraction, photoluminescence, X-ray excitation emission spectrum, decay curve and thermogravimetric analysis. The X-ray diffraction results show that 1 crystallizes in the monoclinic space group P21/n, and the central Mn(Ⅱ) has an octahedral configuration, and 2 crystallizes in the triclinic space group P1, and the central Mn(Ⅱ) has a tetrahedron configuration. Under the UV light (λex=370 nm), solid complexes 1 and 2 emitted deep-red and green emission, respectively. The photoluminescence decay times were 200.11 and 37.23 μs, respectively, and their quantum yield were 23.52% and 5.54%, respectively. Moreover, under the excitation of X-ray, they showed the better X-ray fluorescence performance.
Keywords: Mn(Ⅱ) complex  crystal structure  hydrogen bond  photoluminescence
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LI Ling-Yan,LI Man,LI Lei,YU Yun-Yao,PAN Shang-Ke,PAN Jian-Guo.Synthesis, Crystal Structures and Photophysical Properties of Manganese(Ⅱ) Complexes Based on Imidazole Ionic Liquids[J].Chinese Journal of Inorganic Chemistry,2019,35(12):2275-2283.
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Chinese Journal of Inorganic Chemistry