Two new complexes [Pd（L-phe）2·2H2O] （1） and [Pd（4,4＇-dcbpy）（en）·H2O] （2） （L-phe = L-phenylalanine, 4,4＇-dcbpy = 2,2＇-bipyridyl-4,4＇-dicarboxylate, en = ethylenediamine） were synthesized and c...Two new complexes [Pd（L-phe）2·2H2O] （1） and [Pd（4,4＇-dcbpy）（en）·H2O] （2） （L-phe = L-phenylalanine, 4,4＇-dcbpy = 2,2＇-bipyridyl-4,4＇-dicarboxylate, en = ethylenediamine） were synthesized and characterized. L-phenylalanine was in situ formed via the hydrolysis of N-（tert-butoxycarbonyl）-L-phenylalanine, and ethylenediamine came from the in situ reaction of piperazine （pip） under hydrothermal conditions. The single-crystal X-ray structure analyses reveal that the Pd（Ⅱ） ion constructs a square planer coordination geometry in complexes 1 and 2, respectively. Complex 1 extends into a 2D layered structure via H-bond interactions and complex 2 connects into a 3D network through hydrogen bonds and 7r-tr stacking interactions. The interactions of 1 and 2 with fish sperm DNA （FS-DNA） were examined via UV-Vis absorption spectra and fluorescence spectroscopy. The cleavage reaction for plasmid DNA has been assayed by agarose gel electrophoresis. The results indicate that two complexes interact with DNA and the insertion is the main binding mode.展开更多
Two isomorphic 3D lanthanide metal-organic frameworks,{[Tb(L)0.5(OX)0.5(H2 O)2DMF]·DMF}n(1)and{[Dy(L)0.5(OX)0.5(H2 O)2 DMF]·DMF}n(2),have been prepared under solvothermal conditions based on l,4-bis(3,5-dica...Two isomorphic 3D lanthanide metal-organic frameworks,{[Tb(L)0.5(OX)0.5(H2 O)2DMF]·DMF}n(1)and{[Dy(L)0.5(OX)0.5(H2 O)2 DMF]·DMF}n(2),have been prepared under solvothermal conditions based on l,4-bis(3,5-dicarboxylicpyrazol-1-ylmethyl)benzene(H4 L),oxalis acid(H2 OX)and lanthanide ions.Compound 1 crystallizes in monoclinic system,space group P21/c with a=9.418(15),b=15.23(2),c=14.47(2)?,β=100.07(3)°,V=2044(5)?3,Z=4,Mr=590.3 g/mol,Dc=1.919 g/cm^3,μ=3.524 mm-1,F(000)=1168,R=0.0893 and wR=0.1902 for 3486 observed reflections(I>2σ(I)).In compound 1,the central terbium(Ⅲ)ions are coordinated with eight atoms,and two neighboring terbium(Ⅲ)ions are linked together by one bridging oxalic acid group to give rise to a[Tb2(OX)(L)4]unit.Each[Tb2(OX)(L)4]unit connects to the surrounding six identical ones by the oxygen atoms bridging to lead to a 3D framework.Compound 1 exhibits strong luminescent emissions at the solid state owing to the antenna effect of the ligand.展开更多
基金conducted in the framework of a project sponsored by the National Natural Science Foundation of China(No.21071100)Program for Liaoning Excellent Talents in University(LJQ2014043)
文摘Two new complexes [Pd（L-phe）2·2H2O] （1） and [Pd（4,4＇-dcbpy）（en）·H2O] （2） （L-phe = L-phenylalanine, 4,4＇-dcbpy = 2,2＇-bipyridyl-4,4＇-dicarboxylate, en = ethylenediamine） were synthesized and characterized. L-phenylalanine was in situ formed via the hydrolysis of N-（tert-butoxycarbonyl）-L-phenylalanine, and ethylenediamine came from the in situ reaction of piperazine （pip） under hydrothermal conditions. The single-crystal X-ray structure analyses reveal that the Pd（Ⅱ） ion constructs a square planer coordination geometry in complexes 1 and 2, respectively. Complex 1 extends into a 2D layered structure via H-bond interactions and complex 2 connects into a 3D network through hydrogen bonds and 7r-tr stacking interactions. The interactions of 1 and 2 with fish sperm DNA （FS-DNA） were examined via UV-Vis absorption spectra and fluorescence spectroscopy. The cleavage reaction for plasmid DNA has been assayed by agarose gel electrophoresis. The results indicate that two complexes interact with DNA and the insertion is the main binding mode.
基金supported by the National Natural Science Foundation of China(21701116,21671139 and 21501122)the Doctor Scientific Research Foundation of Liaoning Province(201601201 and 201601193)Program for Liaoning Innovative Research Team in University(No.2018012)。
文摘Two isomorphic 3D lanthanide metal-organic frameworks,{[Tb(L)0.5(OX)0.5(H2 O)2DMF]·DMF}n(1)and{[Dy(L)0.5(OX)0.5(H2 O)2 DMF]·DMF}n(2),have been prepared under solvothermal conditions based on l,4-bis(3,5-dicarboxylicpyrazol-1-ylmethyl)benzene(H4 L),oxalis acid(H2 OX)and lanthanide ions.Compound 1 crystallizes in monoclinic system,space group P21/c with a=9.418(15),b=15.23(2),c=14.47(2)?,β=100.07(3)°,V=2044(5)?3,Z=4,Mr=590.3 g/mol,Dc=1.919 g/cm^3,μ=3.524 mm-1,F(000)=1168,R=0.0893 and wR=0.1902 for 3486 observed reflections(I>2σ(I)).In compound 1,the central terbium(Ⅲ)ions are coordinated with eight atoms,and two neighboring terbium(Ⅲ)ions are linked together by one bridging oxalic acid group to give rise to a[Tb2(OX)(L)4]unit.Each[Tb2(OX)(L)4]unit connects to the surrounding six identical ones by the oxygen atoms bridging to lead to a 3D framework.Compound 1 exhibits strong luminescent emissions at the solid state owing to the antenna effect of the ligand.
