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| Synthesis, crystal structure, and fluorescence properties of two Cu(Ⅰ) complexes based on pyridyl ligand |
| Author Name | Affiliation | E-mail | | SHEN Hongjie | College of Chemistry, Fuzhou University, Fuzhou 350108, China
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, China | | | MIAO Haozhe | College of Chemistry, Fuzhou University, Fuzhou 350108, China
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, China | | | YANG Yuhe | College of Chemistry, Fuzhou University, Fuzhou 350108, China
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, China | | | LI Yinghua | State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China | | | HUANG Deguang | State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China | | | ZHANG Xiaofeng | State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China | zhangxiaofeng@fjirsm.ac.cn |
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| Abstract: Two novel pyridyl ligands, 4-[4-(9,9-dimethyl-9H-fluoren-2-yl)phenyl]pyridine (dmfpp) and 9-[4-(pyridin- 4-yl)phenyl]-9H-carbazole (ppcbz), were successfully synthesized and structurally characterized by 1H NMR and 13C NMR. Two dinuclear Cu(Ⅰ) complexes, [Cu2(dmfpp)2(PPh3)2I2]·2CH2Cl2 (1) and [Cu2(ppcbz)2(PPh3)2I2] (2), have been synthesized by reacting two pyridyl ligands with [Cu4I4(PPh3)4], in a stoichiometric ratio. The complexes have been characterized by elemental analysis, fluorescence spectrum, thermogravimetric analysis (TGA), and single- crystal and powder X-ray diffraction. Complex 1 crystallizes in monoclinic system, space group P21/c with a=1.853 43(3) nm, b=1.266 34(2) nm, c=1.833 48(3) nm, β=106.319 3(18)°, V=4.082 24(12) nm3. Complex 2 crystallizes in mono- clinic system, space group $P \overline{1}$ with a=0.941 07(4) nm, b=1.128 86(4) nm, c=1.697 77(6) nm, α =87.775(3)°, β = 79.622(3)°, γ=71.418(3)°, V=1.681 26(11) nm3. Both complexes feature a [Cu2I2] core with tetrahedrally coordinated Cu(Ⅰ) centers. TGA results demonstrated their good thermal stability, with structural decomposition initiating above 220 ℃ . Fluorescence studies under 370 nm excitation revealed green emission for both complexes. Complex 2 exhibited an outstanding photoluminescence quantum yield (PLQY) of 0.79, significantly higher than that of complex 1 (PLQY: 0.02). |
| Keywords: Cu(Ⅰ) complex pyridyl ligands crystal structure luminescence |
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| SHEN Hongjie,MIAO Haozhe,YANG Yuhe,LI Yinghua,HUANG Deguang,ZHANG Xiaofeng.Synthesis, crystal structure, and fluorescence properties of two Cu(Ⅰ) complexes based on pyridyl ligand[J].Chinese Journal of Inorganic Chemistry,2025,41(5):855-863. |
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