Two new different Cu(Ⅱ) MOFs with the same 1,3,5-tris(1-imidazolyl) benzene(tib) ligand {[Cu(tib)2]·(H2O)2·Br2}n(1) and {[Cu2(tib)·Br·Cl]·2Br}n(2) were obtained by one pot synthesized of tib ...Two new different Cu(Ⅱ) MOFs with the same 1,3,5-tris(1-imidazolyl) benzene(tib) ligand {[Cu(tib)2]·(H2O)2·Br2}n(1) and {[Cu2(tib)·Br·Cl]·2Br}n(2) were obtained by one pot synthesized of tib with CuBr in the presences of HCl and water. X-ray single crystal diffraction analyses indicate that both complexes 1 and 2 have two dimensional frameworks containing different building blocks. Each Cu(Ⅱ) atom in complex 1 is coordinated by four N atoms from different tib ligands. However, there are two different cryptographic Cu(Ⅱ) atoms in complex 2, one is four coordinated by two bromine atoms and two N atoms from different tib ligands, the other is six coordinated by two chloride atoms and four N atoms from different tib ligands. The thermal gravimetric analysis of complexes 1 and 2 are depicted in the paper.展开更多
Two new emissive mononuclear copper（Ⅰ） triphenylphosphine complexes with functionalized 6-tert- butoxycarbonyl-2,2＇-bipyridiue chelating ligands were prepared and characterized. Each Cu（Ⅰ） cation has a markedly...Two new emissive mononuclear copper（Ⅰ） triphenylphosphine complexes with functionalized 6-tert- butoxycarbonyl-2,2＇-bipyridiue chelating ligands were prepared and characterized. Each Cu（Ⅰ） cation has a markedly distorted P2N2 tetrahedral array with two different Cu--N bond distances, due to the addition of the bulky tert-butoxycarbonyl group at the 6-position of the 2,2＇-bipyridyl ring. A weak low-energy broad absorption band appears at 330-500 nm in their CH2Cl2 solutions, which is influenced by the methylation of the 2,2＇-bipyridyl ring. At room temperature, the photoluminescence can be clearly observed both in degassed CH2Cl2 solution and in the solid state, because of the introduction of the bulky tert-butoxycarbonyl substituent, and the emission properties are remarkably affected by both the methylation and the alkoxycarbonyl variation of the 2,2＇-bipyridyl ring. It is shown that the introduction of the bulky tert-butoxyearbonyl group is favorable for improving the emission properties of the 6-alkoxycarbonyl-2,2＇-bipyridine-based cuprous complexes.展开更多
基金funded by the National Natural Science Foundation of China(21261009)Young Scientist Foundation of Jiangxi Provincethe Education Fund of Jiangxi Province(GJJ13434)
文摘Two new different Cu(Ⅱ) MOFs with the same 1,3,5-tris(1-imidazolyl) benzene(tib) ligand {[Cu(tib)2]·(H2O)2·Br2}n(1) and {[Cu2(tib)·Br·Cl]·2Br}n(2) were obtained by one pot synthesized of tib with CuBr in the presences of HCl and water. X-ray single crystal diffraction analyses indicate that both complexes 1 and 2 have two dimensional frameworks containing different building blocks. Each Cu(Ⅱ) atom in complex 1 is coordinated by four N atoms from different tib ligands. However, there are two different cryptographic Cu(Ⅱ) atoms in complex 2, one is four coordinated by two bromine atoms and two N atoms from different tib ligands, the other is six coordinated by two chloride atoms and four N atoms from different tib ligands. The thermal gravimetric analysis of complexes 1 and 2 are depicted in the paper.
基金Supported by the National Natural Science Foundation of China（Nos.21561013, 21501077）, the Major Program of Jiangxi Provincial Natural Science Foundation for Young Scholar, China（Nos.20143ACB21017, 20161ACB21013）, the Natural Science Foundation of Jiangxi Province, China（Nos.20171BAB203005, 20171BCB23066, 20151BAB213003） and the Program for Qingjiang Excellent Young Talents, Jiangxi University of Science and Technology, China.
文摘Two new emissive mononuclear copper（Ⅰ） triphenylphosphine complexes with functionalized 6-tert- butoxycarbonyl-2,2＇-bipyridiue chelating ligands were prepared and characterized. Each Cu（Ⅰ） cation has a markedly distorted P2N2 tetrahedral array with two different Cu--N bond distances, due to the addition of the bulky tert-butoxycarbonyl group at the 6-position of the 2,2＇-bipyridyl ring. A weak low-energy broad absorption band appears at 330-500 nm in their CH2Cl2 solutions, which is influenced by the methylation of the 2,2＇-bipyridyl ring. At room temperature, the photoluminescence can be clearly observed both in degassed CH2Cl2 solution and in the solid state, because of the introduction of the bulky tert-butoxycarbonyl substituent, and the emission properties are remarkably affected by both the methylation and the alkoxycarbonyl variation of the 2,2＇-bipyridyl ring. It is shown that the introduction of the bulky tert-butoxyearbonyl group is favorable for improving the emission properties of the 6-alkoxycarbonyl-2,2＇-bipyridine-based cuprous complexes.
