A coordination polymer{[Cd(H_(2)dpa)(bpy)]·3H_(2)O}_(n)(Cd-CP)was designed and hydrothermal synthesized based on 4-(2,4-dicarboxyphenoxy)phthalic acid(H_(4)dpa),2,2'-bipyridine(bpy)and Cd(NO_(3))_(2)·4H_...A coordination polymer{[Cd(H_(2)dpa)(bpy)]·3H_(2)O}_(n)(Cd-CP)was designed and hydrothermal synthesized based on 4-(2,4-dicarboxyphenoxy)phthalic acid(H_(4)dpa),2,2'-bipyridine(bpy)and Cd(NO_(3))_(2)·4H_(2)O.The structure was characterized by single-crystal X-ray diffraction,powder X-ray diffraction,elemental analysis,and infrared spectroscopy.Cd-CP belongs to the monoclinic crystal system with the P2_1/c space group and performs in a 1D double-chain structure.The adjacent double chains further form a 3D supramolecular network structure through hydrogen bonding.Thermogravimetric analysis shows that Cd-CP has good thermal stability.Fluorescence analysis showed that Cd-CP had good choosing selectively and was sensitive to metal ions(Fe^(3+)and Zn^(2+)),2,4,6-trinitrophenylhydrazine(TRI),and pyrimethanil(Pth).Interestingly,when Cd-CP was used for fluorescence detection of metal ions,it was found to have a fluorescence quenching effect on Fe^(3+)but had an obvious enhancement effect on Zn^(2+).Therefore,we designed an“on-off-on”logic gate.In addition,the mechanism of fluorescence sensing has been deeply explored.CCDC:2258625.展开更多
Two new coordination polymers[Co(L)_(0.5)(1,3-bib)](1)and[Ni_(2)(L)(1,4-bib)3(H_(2)O)_(2)]·2H_(2)O(2),where H4L=1,2,4,5-benzenetetracarboxylic acid,1,3-bib=1,3-bis((1H-imidazol-1-yl)methyl)benzene,and 1,4-bib=1,4...Two new coordination polymers[Co(L)_(0.5)(1,3-bib)](1)and[Ni_(2)(L)(1,4-bib)3(H_(2)O)_(2)]·2H_(2)O(2),where H4L=1,2,4,5-benzenetetracarboxylic acid,1,3-bib=1,3-bis((1H-imidazol-1-yl)methyl)benzene,and 1,4-bib=1,4-bis((1H-imidazol-1-yl)methyl)benzene,were synthesized under hydrothermal conditions.The structures of 1 and 2 were con-firmed by elemental analysis,FTIR spectroscopy,single-crystal X-ray diffraction,etc.The results show that 1 and 2 are 3D network structures.The completely deprotonated L4-ligand adopts theμ_(4)-к^(2)∶к^(1)∶к^(2)∶к^(1)mode in 1 and theμ_(2)-к^(1)∶к^(0)∶к^(1)∶к^(0)coordination mode in 2.Further studies showed that in the presence of H_(2)O_(2)and visible light irradiation conditions,1 had good photocatalytic performance for the degradation of MO(methyl orange)/MB(methylene blue)in water,and the degradation rates reached 83.2%and 84.5%at 180 min.Under the same conditions,2 also showed good degradation of the dyes MB and RhB(rhodamine B)in aqueous solution,with 87.0%and 77.4%degradation rates at 180 min,respectively.In addition,the mechanism of photocatalytic degradation of the dye by 1 and 2 was investigated.CCDC:2219951,1;2219953,2.展开更多
文摘A coordination polymer{[Cd(H_(2)dpa)(bpy)]·3H_(2)O}_(n)(Cd-CP)was designed and hydrothermal synthesized based on 4-(2,4-dicarboxyphenoxy)phthalic acid(H_(4)dpa),2,2'-bipyridine(bpy)and Cd(NO_(3))_(2)·4H_(2)O.The structure was characterized by single-crystal X-ray diffraction,powder X-ray diffraction,elemental analysis,and infrared spectroscopy.Cd-CP belongs to the monoclinic crystal system with the P2_1/c space group and performs in a 1D double-chain structure.The adjacent double chains further form a 3D supramolecular network structure through hydrogen bonding.Thermogravimetric analysis shows that Cd-CP has good thermal stability.Fluorescence analysis showed that Cd-CP had good choosing selectively and was sensitive to metal ions(Fe^(3+)and Zn^(2+)),2,4,6-trinitrophenylhydrazine(TRI),and pyrimethanil(Pth).Interestingly,when Cd-CP was used for fluorescence detection of metal ions,it was found to have a fluorescence quenching effect on Fe^(3+)but had an obvious enhancement effect on Zn^(2+).Therefore,we designed an“on-off-on”logic gate.In addition,the mechanism of fluorescence sensing has been deeply explored.CCDC:2258625.
文摘Two new coordination polymers[Co(L)_(0.5)(1,3-bib)](1)and[Ni_(2)(L)(1,4-bib)3(H_(2)O)_(2)]·2H_(2)O(2),where H4L=1,2,4,5-benzenetetracarboxylic acid,1,3-bib=1,3-bis((1H-imidazol-1-yl)methyl)benzene,and 1,4-bib=1,4-bis((1H-imidazol-1-yl)methyl)benzene,were synthesized under hydrothermal conditions.The structures of 1 and 2 were con-firmed by elemental analysis,FTIR spectroscopy,single-crystal X-ray diffraction,etc.The results show that 1 and 2 are 3D network structures.The completely deprotonated L4-ligand adopts theμ_(4)-к^(2)∶к^(1)∶к^(2)∶к^(1)mode in 1 and theμ_(2)-к^(1)∶к^(0)∶к^(1)∶к^(0)coordination mode in 2.Further studies showed that in the presence of H_(2)O_(2)and visible light irradiation conditions,1 had good photocatalytic performance for the degradation of MO(methyl orange)/MB(methylene blue)in water,and the degradation rates reached 83.2%and 84.5%at 180 min.Under the same conditions,2 also showed good degradation of the dyes MB and RhB(rhodamine B)in aqueous solution,with 87.0%and 77.4%degradation rates at 180 min,respectively.In addition,the mechanism of photocatalytic degradation of the dye by 1 and 2 was investigated.CCDC:2219951,1;2219953,2.
