Synthesis and Study of Spectroscopic Properties of 5-(1-Oxido-3-pyridyl)-10,15,20-triphenyl Porphyrin and Its Zn(Ⅱ) Complex

Two novel sensitizers with pyridine-N-oxide zinc porphyrin and its zinc porphyrin as the anchor group and electron acceptor have been synthesized. The structures have been characterized by UV, elemental analyses and ~1H NMR. UV and fluorescence spectra show that they have good light absorbing properties in the range of visible light and suggest that they have potential applications in dye-sensitized solar cells.     

Synthesis and Study of Spectroscopic Properties of Imidazole Porphyrin and Its Zn(Ⅱ) Complex

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.     

Two Novel Coordination Polymers of Schiff Base Ligands: Synthesis,Crystal Structures and Antibacterial Properties Studies

Two novel complexes [Ag L~1(NO_3)H_2O]_n(1) and [Pb L_2(NO_3)_2]_n(2) were synthesized by the evaporation reaction with metal salts and Schiff base ligands. They were characterized by elemental analyses, IR spectra and X-ray single-crystal diffraction. 1 crystallizes in monoclinic, space group P21/c with a = 18.358(3), b = 10.0395(15), c = 13.4643(16) ?, β = 91.749(12)o, V = 2480.4(6) ?3, Dc = 1.597 g/cm~3, Mr = 596.35, F(000) = 1208, Z = 4, R = 0.0772 and w R = 0.0927. 2 crystallizes in monoclinic space group C2/c with a = 15.8549(10), b = 21.1988(17), c = 17.7198(12) ?, β = 105.829(8)o, V = 5729.9(7) ?~3, Dc = 1.645 g/cm~3, Mr = 709.63, F(000) = 2736, Z = 8, R = 0.0541 and w R = 0.1175. X-ray single-crystal diffraction experiments of 1 and 2 display that extensive π×××π stacking interactions and hydrogen bonds construct into a 2D rectangular network and a 3D supramolecular framework. The antibacterial properties of L1, L2, 1 and 2 were also studied.     

分子间自由基正离子反应研究进展

自由基正离子含有一个正电荷和一对未成对电子,是很多有机化学反应的重要的活性中间体。文章综述了近几年自由基正离子反应研究进展,主要包括化学氧化剂诱导的自由基正离子反应、可见光诱导的自由基正离子反应、电诱导的自由基正离子反应等方面的研究。