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Articles by En-Jun Gao
Total Records ( 3 ) for En-Jun Gao
  Ya-Guang Sun , Xiao-Fu Gu , Renata Drozdzak , Fu Ding , En-Jun Gao , Xiao-Mei Yan and Francis Verpoort
  Cd2(phen)2(DPZDA)2(H2O)2] · 8H2O (1) and [Zn(phen)(DPZDA)(H2O)] · 2H2O (2) have been synthesized by reaction of Cd(NO33)2/Zn(NO33)2 with phen and DPZDA (where phen = 1,10-phenanthroline, H2DPZDA = 3,5-dimethyl-2,6-pyrazinedicarboxylic acid) in aqueous ethanol solution. Elemental analysis, IR spectra, thermal analyses and X-ray single crystal diffraction were carried out to determine the composition and crystal structure of 1 and 2. In 1, a 2D supramolecular network containing a novel metal-water decamer were formed by hydrogen bonds. In 2, a 2D supramolecular structure was constructed from hydrogen bonds and π·· · π interactions. Moreover, 1 and 2 displayed photoluminescent properties in the blue range at room temperature
  En-Jun Gao , Qiong Wu , Chuan-Sheng Wang , Ming-Chang Zhu , Lei Wang , Hong-Yan Liu , Yun Huang and Ya-Guang Sun
  The mononuclear palladium(II) (1) and platinum(II) (2) complexes containing phenylglycine have been synthesized and characterized by elemental analysis, IR spectra, and 1H NMR spectra. The structure of 1 was determined by X-ray diffractometry. The interaction between the complexes and fish sperm DNA (FS-DNA), adenosine-5'-triphosphate (ATP), and adenine (Ade) were investigated by UV absorption spectra, the interaction mode of the complex binding to DNA was studied by fluorescence spectra and viscometry. The results indicate that the two complexes have different binding affinities to DNA, complex 2 > complex 1. Gel electrophoresis assay demonstrates that the two complexes have the ability to cleave pBR322 plasmid DNA. Cytotoxicity experiments were carried out toward four different cancer cell lines, and 1 shows lower inhibitory efficiency than 2, consistent with the binding affinities towards DNA.
  En-Jun Gao , Ying Zhang , Lin Lin , Ren-Shu Wang , Lei Dai , Qi Liang , Ming-Chang Zhu , Mei-Lin Wang , Lei Liu , Wen-Xuan He and Yan-Jin Zhang
  Two manganese complexes, [Mn(L1)2(dibe)2](L1) (1) and [Mn(L2)(dibe)2] (2) (where L1 = 2,2′-bipyridine (bipy), L2 = 1,10-phenanthroline (phen)), were synthesized by using a carboxylic acid ligand (dibe = 2,2-dibenzylmalonate acid). The two complexes were characterized using IR, elemental analysis, and X-ray crystallography. Fluorescence analysis indicates that the two complexes can bind to HeLa cell DNA (HC-DNA), and gel electrophoresis assay demonstrates the ability of the complexes to cleave the HC-DNA. The two complexes exhibit cytotoxic specificity and significant cancer cell inhibitory rate. Furthermore, apoptotic tests demonstrate that these two complexes have apoptotic effects on HeLa cells.
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