A new ruthenium polypyridine complex, [Ru(phen) 2(pMIP)] 2+(phen=1,10-phenanthroline, pMIP=2-(4-methylphenyl)imidazo phenanthroline), was synthesized and characterized by elementary analysis, MS and 1H NMR. Spectrosco...A new ruthenium polypyridine complex, [Ru(phen) 2(pMIP)] 2+(phen=1,10-phenanthroline, pMIP=2-(4-methylphenyl)imidazo phenanthroline), was synthesized and characterized by elementary analysis, MS and 1H NMR. Spectroscopic methods have been carried out on the interaction mechanism of the Ru (Ⅱ) complex with yeast tRNA systematically. The experimental results indicate that the complex binds to yeast tRNA with an intercalative mode possibly, and interacts with yeast tRNA enantioselectively. The experimental results also suggest that spectroscopic method is effective on studying the interaction mechanism of Ru (Ⅱ) complexes with RNA. Information obtained from the study is potentially useful in the design of new RNA-targeting drugs.展开更多
The interaction of ruthenated porphyrin [Ru(bpy) 2(MPyTPP)Cl] + with CT-DNA was investigated with UV-Vis and fluorescent spectrum. It is found that [Ru(bpy) 2(MPyTPP)Cl] + binds to CT-DNA with a high affinity.
One-dimensional cyanide-bridged bimetallic coordination polymer [CuL(H 2O) 2] n [(CuL)·(μ-CN) 2Fe(CN) 4] 2n ·(H 2O) 2n was synthesized and structurally characterized. The coordination polymer crystallizes i...One-dimensional cyanide-bridged bimetallic coordination polymer [CuL(H 2O) 2] n [(CuL)·(μ-CN) 2Fe(CN) 4] 2n ·(H 2O) 2n was synthesized and structurally characterized. The coordination polymer crystallizes in a monoclinic system of the space group C2/c with a=2.983 1(5) nm, b=1.527 4(3) nm, c= 1.725 3(4) nm, β=107.68(2)°, V=7.490(3) nm3, Z=8, D c=1.382 g/cm3, F(000)=3 260, R=0.059 3, wR 2=0.132 3, S=0.885. The one-dimensional zigzag chain extents through Cu—CN—Fe—CN—Cu linkages. The adjacent two polymer chains are linked by the O—H……NC hydrogen bonding between [CuL(H 2O) 2] 2+ and [Fe(CN) 6] 3- ions to form hydrophilic channels in which water molecules are included.展开更多
Two structurally related polypyridyl ligands ODHIP(3,4-dihydroxyl-imidazophenanthroline), MDHIP(2,4-dihydroxyl-imidazo phenanthroline) and their ruthenium(II) complexes [Ru(phen) 2ODHIP] 2+ and [Ru(phen) 2MDHIP] 2+ we...Two structurally related polypyridyl ligands ODHIP(3,4-dihydroxyl-imidazophenanthroline), MDHIP(2,4-dihydroxyl-imidazo phenanthroline) and their ruthenium(II) complexes [Ru(phen) 2ODHIP] 2+ and [Ru(phen) 2MDHIP] 2+ were prepared and characterized. Their DNA-binding properties were studied by spectroscopic methods and viscosity measurements. The results indicated that the two complexes are bound to DNA by different modes due to the different planarities of ligands. For the complex [Ru(phen) 2MDHIP] 2+, the 2- position ortho group of MDHIP could form an intramolecular hydrogen bond with the nitrogen atom of the imidazole ring to extend the planarity and strengthen the binding affinity. On the other hand, the 4- position ortho group hindered the complex from intercalating into the base pairs of DNA, and finally, making the complex bind to DNA by a partial intercalative mode. However, for the complex [Ru(phen) 2ODHIP] 2+, there was no intramolecular hydrogen bond formed and the two ortho groups further increased the steric effect and decreased the binding affinity, thus making the complex bind to DNA by groove binding mode.展开更多
文摘A new ruthenium polypyridine complex, [Ru(phen) 2(pMIP)] 2+(phen=1,10-phenanthroline, pMIP=2-(4-methylphenyl)imidazo phenanthroline), was synthesized and characterized by elementary analysis, MS and 1H NMR. Spectroscopic methods have been carried out on the interaction mechanism of the Ru (Ⅱ) complex with yeast tRNA systematically. The experimental results indicate that the complex binds to yeast tRNA with an intercalative mode possibly, and interacts with yeast tRNA enantioselectively. The experimental results also suggest that spectroscopic method is effective on studying the interaction mechanism of Ru (Ⅱ) complexes with RNA. Information obtained from the study is potentially useful in the design of new RNA-targeting drugs.
文摘The interaction of ruthenated porphyrin [Ru(bpy) 2(MPyTPP)Cl] + with CT-DNA was investigated with UV-Vis and fluorescent spectrum. It is found that [Ru(bpy) 2(MPyTPP)Cl] + binds to CT-DNA with a high affinity.
基金supported by the National Natural Science Foundation of China(20971046,21171057,61178037,11004256)Natural Science Foundation of Guangdong Province,China(10351064101000000)+1 种基金Open Fund of the State Key Laboratory of Optoelectronic Materials and Technologies(SunYat-Sen University),ChinaAppropriative Researching Fund for Professors and Doctors,Guangdong University of Education,China(10ARF14)~~
文摘One-dimensional cyanide-bridged bimetallic coordination polymer [CuL(H 2O) 2] n [(CuL)·(μ-CN) 2Fe(CN) 4] 2n ·(H 2O) 2n was synthesized and structurally characterized. The coordination polymer crystallizes in a monoclinic system of the space group C2/c with a=2.983 1(5) nm, b=1.527 4(3) nm, c= 1.725 3(4) nm, β=107.68(2)°, V=7.490(3) nm3, Z=8, D c=1.382 g/cm3, F(000)=3 260, R=0.059 3, wR 2=0.132 3, S=0.885. The one-dimensional zigzag chain extents through Cu—CN—Fe—CN—Cu linkages. The adjacent two polymer chains are linked by the O—H……NC hydrogen bonding between [CuL(H 2O) 2] 2+ and [Fe(CN) 6] 3- ions to form hydrophilic channels in which water molecules are included.
文摘Two structurally related polypyridyl ligands ODHIP(3,4-dihydroxyl-imidazophenanthroline), MDHIP(2,4-dihydroxyl-imidazo phenanthroline) and their ruthenium(II) complexes [Ru(phen) 2ODHIP] 2+ and [Ru(phen) 2MDHIP] 2+ were prepared and characterized. Their DNA-binding properties were studied by spectroscopic methods and viscosity measurements. The results indicated that the two complexes are bound to DNA by different modes due to the different planarities of ligands. For the complex [Ru(phen) 2MDHIP] 2+, the 2- position ortho group of MDHIP could form an intramolecular hydrogen bond with the nitrogen atom of the imidazole ring to extend the planarity and strengthen the binding affinity. On the other hand, the 4- position ortho group hindered the complex from intercalating into the base pairs of DNA, and finally, making the complex bind to DNA by a partial intercalative mode. However, for the complex [Ru(phen) 2ODHIP] 2+, there was no intramolecular hydrogen bond formed and the two ortho groups further increased the steric effect and decreased the binding affinity, thus making the complex bind to DNA by groove binding mode.
