In the paper we compare rutin with vitamin B2 in electrochemical investigation,electrochemcial parameters of adding DNA.It shows that both reduction and oxidation peak currents of rutin or vitamin B2 decrease with no ...In the paper we compare rutin with vitamin B2 in electrochemical investigation,electrochemcial parameters of adding DNA.It shows that both reduction and oxidation peak currents of rutin or vitamin B2 decrease with no change in the peak potentials,when DNA is added in rutin or vitamin B2 solution.An electrochemical inactive supramolecular complex DNA-Rt or DNA-VB2 was formed.The decrease in peak current was proportional to DNA concentration and can be used to determine DNA concentration.Change of peak current with the concentration of rutin or vitamin B2 is linear in sure range and can be used to determine rutin or vitamin B2concentration.A satisfactory result was obtained for the determination of rutin or vitamin B2 in tablet.展开更多
L cysteic acid was synthesized from L cystine by indirect electroxidation method in this paper.High yield and purity of the product were obtained.The product structure was characterized by IR and 1HNMR, and its TGA cu...L cysteic acid was synthesized from L cystine by indirect electroxidation method in this paper.High yield and purity of the product were obtained.The product structure was characterized by IR and 1HNMR, and its TGA curve was discussed as well.展开更多
Two of new Schiff bases,3-nitrobenzaldehyde salicyloyl hydrazone(C14H11N3O4),vanillic salicyloyl hydrazone(C15H14N2O4),were synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and （）1H NMR...Two of new Schiff bases,3-nitrobenzaldehyde salicyloyl hydrazone(C14H11N3O4),vanillic salicyloyl hydrazone(C15H14N2O4),were synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and （）1H NMR.The results,based on indexing the cell parameters of XRD,showed that they belonged to orthorhombic system.And the result peoved that the Schiff bases had selective antibacterial property.展开更多
Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivi...Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivity.The schiffbase ligand was further ascertained by 1HNMR spectra.The composition coordination state and possible structures in these compounds were given.The tests of biological activity showed that synthesized complexes have scavenging effect on superoxide free radical similar SOD enzyme and these compounds are effective chemicals to kill tetranychus bimaculatus.展开更多
A new method has been developed for separation and determination of zinc,copper,cobalt and nickel based on their colour chelates with 6,6″-dimethyl-4′-phenyl-2,2′:6′,2″-terpyridine（TPY） by ion pair high perform...A new method has been developed for separation and determination of zinc,copper,cobalt and nickel based on their colour chelates with 6,6″-dimethyl-4′-phenyl-2,2′:6′,2″-terpyridine（TPY） by ion pair high performance liquid chromatography in a reversed phase mode.The suitable conditions are the methanol-water（80:20,V/V） containing 10mmol/L NaH2PO4-H3PO4 buffer solution（pH=5.0） and 3.0mmol/L sodium dodecyl sulfonate as mobile phase,on a Symmetry C18 column（3.9mmID×150mm）,the flow rate of the mobile phase is 1.0mL/min.Spectrophotometric detection was made at 340nm.The detective limits are 0.05,0.10,2.00 and 0.50ng/mL respectively.The method has good selectivity and sensitivity.It has been applied to the separation and determination of zinc,copper,cobalt and nickel in human hair and tobacco and the result is satisfied.展开更多
N,N′-ethidenedi(2-hydroxy 4 methoxy benzophenone imine acetal)was synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and 1H NMR.The result of XRD proved that it belonged to the monoclinic ...N,N′-ethidenedi(2-hydroxy 4 methoxy benzophenone imine acetal)was synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and 1H NMR.The result of XRD proved that it belonged to the monoclinic system.Its lattice parameters were:a=1.1018nm,b=1.5730nm,c=1.8858nm,β=93.50°.The schiff base has a strong absorption ability to absorb the UV-A and UV-B,and bears antibacterial activity of many bacterial.展开更多
The novel complex of thioglycolic acid and trivalent antimony ion had been synthesized by liquid phase reaction of thioglycolic acid and antimony trichloride.The structure of the complex was characterized by elemental...The novel complex of thioglycolic acid and trivalent antimony ion had been synthesized by liquid phase reaction of thioglycolic acid and antimony trichloride.The structure of the complex was characterized by elemental analyses and X ray powder diffraction.The complex has the composition of HSb(SCH 2COO) 2 being white crystal,stable in air,non hygroscopicity and decomposed above 208℃.The results of indexes to the X ray powder diffraction data indicate that the crystal structure of the complex belongs to monoclinic system.The lattice parameters are:a=1.4015nm,b=1.2092nm,c=1.2419nm,β=126.68°,V=1.6879nm 3,Z=8,D cal =2.384g·cm -3 ,D exp =2.374g·cm -3 .The calculated lattice parameters are in agreement with those of the single crystal determined by us.展开更多
Antimony-doped tin oxide nanometer conductive-powders were synthesized by the hydrothermal method from the starting SnCl4.5H2O and SbCl3.The conductive-powder compose and the appearance were characterized by means of ...Antimony-doped tin oxide nanometer conductive-powders were synthesized by the hydrothermal method from the starting SnCl4.5H2O and SbCl3.The conductive-powder compose and the appearance were characterized by means of XRD and TEM.The effets of doping capacity,reaction temperature and pH on nanoparticles grainsize and electrical property were studied.The results showed that nanoparticles synthesized possessed tetragonal rutile structure with an average grain size near 16 nm,the particles of resistance rate to 12.3Ω.cm.TEM photographs showed that the particles weakly agglomerated.展开更多
文摘In the paper we compare rutin with vitamin B2 in electrochemical investigation,electrochemcial parameters of adding DNA.It shows that both reduction and oxidation peak currents of rutin or vitamin B2 decrease with no change in the peak potentials,when DNA is added in rutin or vitamin B2 solution.An electrochemical inactive supramolecular complex DNA-Rt or DNA-VB2 was formed.The decrease in peak current was proportional to DNA concentration and can be used to determine DNA concentration.Change of peak current with the concentration of rutin or vitamin B2 is linear in sure range and can be used to determine rutin or vitamin B2concentration.A satisfactory result was obtained for the determination of rutin or vitamin B2 in tablet.
文摘L cysteic acid was synthesized from L cystine by indirect electroxidation method in this paper.High yield and purity of the product were obtained.The product structure was characterized by IR and 1HNMR, and its TGA curve was discussed as well.
文摘Two of new Schiff bases,3-nitrobenzaldehyde salicyloyl hydrazone(C14H11N3O4),vanillic salicyloyl hydrazone(C15H14N2O4),were synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and （）1H NMR.The results,based on indexing the cell parameters of XRD,showed that they belonged to orthorhombic system.And the result peoved that the Schiff bases had selective antibacterial property.
文摘Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivity.The schiffbase ligand was further ascertained by 1HNMR spectra.The composition coordination state and possible structures in these compounds were given.The tests of biological activity showed that synthesized complexes have scavenging effect on superoxide free radical similar SOD enzyme and these compounds are effective chemicals to kill tetranychus bimaculatus.
文摘A new method has been developed for separation and determination of zinc,copper,cobalt and nickel based on their colour chelates with 6,6″-dimethyl-4′-phenyl-2,2′:6′,2″-terpyridine（TPY） by ion pair high performance liquid chromatography in a reversed phase mode.The suitable conditions are the methanol-water（80:20,V/V） containing 10mmol/L NaH2PO4-H3PO4 buffer solution（pH=5.0） and 3.0mmol/L sodium dodecyl sulfonate as mobile phase,on a Symmetry C18 column（3.9mmID×150mm）,the flow rate of the mobile phase is 1.0mL/min.Spectrophotometric detection was made at 340nm.The detective limits are 0.05,0.10,2.00 and 0.50ng/mL respectively.The method has good selectivity and sensitivity.It has been applied to the separation and determination of zinc,copper,cobalt and nickel in human hair and tobacco and the result is satisfied.
文摘N,N′-ethidenedi(2-hydroxy 4 methoxy benzophenone imine acetal)was synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and 1H NMR.The result of XRD proved that it belonged to the monoclinic system.Its lattice parameters were:a=1.1018nm,b=1.5730nm,c=1.8858nm,β=93.50°.The schiff base has a strong absorption ability to absorb the UV-A and UV-B,and bears antibacterial activity of many bacterial.
文摘The novel complex of thioglycolic acid and trivalent antimony ion had been synthesized by liquid phase reaction of thioglycolic acid and antimony trichloride.The structure of the complex was characterized by elemental analyses and X ray powder diffraction.The complex has the composition of HSb(SCH 2COO) 2 being white crystal,stable in air,non hygroscopicity and decomposed above 208℃.The results of indexes to the X ray powder diffraction data indicate that the crystal structure of the complex belongs to monoclinic system.The lattice parameters are:a=1.4015nm,b=1.2092nm,c=1.2419nm,β=126.68°,V=1.6879nm 3,Z=8,D cal =2.384g·cm -3 ,D exp =2.374g·cm -3 .The calculated lattice parameters are in agreement with those of the single crystal determined by us.
文摘Antimony-doped tin oxide nanometer conductive-powders were synthesized by the hydrothermal method from the starting SnCl4.5H2O and SbCl3.The conductive-powder compose and the appearance were characterized by means of XRD and TEM.The effets of doping capacity,reaction temperature and pH on nanoparticles grainsize and electrical property were studied.The results showed that nanoparticles synthesized possessed tetragonal rutile structure with an average grain size near 16 nm,the particles of resistance rate to 12.3Ω.cm.TEM photographs showed that the particles weakly agglomerated.
