Absorbance and fluorescence methods were used to study the interaction of - and A-tris (phenanthroline) nickel ( Ⅱ) complex with calf thymus DNA. It was con- cluded that -Ni(phen). preferentially bound to DNA. Espec...Absorbance and fluorescence methods were used to study the interaction of - and A-tris (phenanthroline) nickel ( Ⅱ) complex with calf thymus DNA. It was con- cluded that -Ni(phen). preferentially bound to DNA. Especially the fluorescence Scatchard plots were discussed for the binding of EthBr to calf thymus DNA in the presence of varying concentrations of the metal complex. Theses studies indicated that both the isomers bound to DNA by two acting types , namely , intercalative and electrostatic bound modes.展开更多
A novel sensitizer with imidazole zinc porphyrin as electron donor has been synthesized. The structure has been characterized by UV-Vis, elemental analyses and 1 H NMR.UV-Vis and fluorescence spectra show that it has ...A novel sensitizer with imidazole zinc porphyrin as electron donor has been synthesized. The structure has been characterized by UV-Vis, elemental analyses and 1 H NMR.UV-Vis and fluorescence spectra show that it has good light absorbing properties in the range of visible light and suggests that it has potential applications in dye-sensitized solar cells.展开更多
Mixed-valence dinuclear molybdenum complex [Et4N][Mo2(PyS)3(CO)5] (1) (PyS=C5H4NS) has been synthe-sized and characterized by crystallography. 1 crystallizes in monoclinic system with space group P21/c with a=1.5769(1...Mixed-valence dinuclear molybdenum complex [Et4N][Mo2(PyS)3(CO)5] (1) (PyS=C5H4NS) has been synthe-sized and characterized by crystallography. 1 crystallizes in monoclinic system with space group P21/c with a=1.5769(11) nm, b=1.3144(5) nm, c=1.6935(10) nm; b=111.20(4); V=3.2724 nm3; Z=4, Dc=1.61 g/cm3, =9.7 cm-1 and F(000)=1600. The final R=0.054 and wR=0.073, for 1811 observed reflection with I>3s(I). In compound 1, one chelating PyS ligand and two bridging PyS ligands are 3-electron and 5-electron donors, respec-tively, and two molybdenum atoms are located in different coordination environments resulting in mixed-valence state. The reaction mechanism of Mo(CO)6 with PySH and PySO (C5H5SNO) was investigated and two reac-tion pathways were proposed.展开更多
文摘Absorbance and fluorescence methods were used to study the interaction of - and A-tris (phenanthroline) nickel ( Ⅱ) complex with calf thymus DNA. It was con- cluded that -Ni(phen). preferentially bound to DNA. Especially the fluorescence Scatchard plots were discussed for the binding of EthBr to calf thymus DNA in the presence of varying concentrations of the metal complex. Theses studies indicated that both the isomers bound to DNA by two acting types , namely , intercalative and electrostatic bound modes.
基金supported by the University Project of Gansu Province(2017A-095)13th Five-Year Period Education Plan of Gansu Province(GS[2017]GHB0360)the National Natural Science Foundation of China(21702089)
文摘A novel sensitizer with imidazole zinc porphyrin as electron donor has been synthesized. The structure has been characterized by UV-Vis, elemental analyses and 1 H NMR.UV-Vis and fluorescence spectra show that it has good light absorbing properties in the range of visible light and suggests that it has potential applications in dye-sensitized solar cells.
基金Project supported by the National Natural Science Foundation of China (No. 29733090-3) and State Key Laboratory of Structural Chemistry.
文摘Mixed-valence dinuclear molybdenum complex [Et4N][Mo2(PyS)3(CO)5] (1) (PyS=C5H4NS) has been synthe-sized and characterized by crystallography. 1 crystallizes in monoclinic system with space group P21/c with a=1.5769(11) nm, b=1.3144(5) nm, c=1.6935(10) nm; b=111.20(4); V=3.2724 nm3; Z=4, Dc=1.61 g/cm3, =9.7 cm-1 and F(000)=1600. The final R=0.054 and wR=0.073, for 1811 observed reflection with I>3s(I). In compound 1, one chelating PyS ligand and two bridging PyS ligands are 3-electron and 5-electron donors, respec-tively, and two molybdenum atoms are located in different coordination environments resulting in mixed-valence state. The reaction mechanism of Mo(CO)6 with PySH and PySO (C5H5SNO) was investigated and two reac-tion pathways were proposed.
