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| 1 | Studies on the Recognition Interaction of Rhodamine B and DNA by Voltammetry显示文摘The recognition interaction of Rhodamine B(RB) with DNA was studied in a Britton-Robinson (B-R) buffer solution with pH=7.5 at a glassy carbon electrode by electrochemical techniques. RB shows an irreversible oxidation peak at +0.92 V(vs. SCE). After the addition of DNA in the RB solution, the peak current of RB decreased apparently without the shift of the peak potential. The electrochemical parameters such as the charge transfer coefficient α and the electrode reaction rate constant k s of the interaction system were carefully studied. The parameters did not change before and after the addition of DNA, which indicated that an electrochemical non-active complex had been formed, so the concentration of RB in the solution decreased and the peak current decreased correspondingly. The binding ratio of RB to DNA was 2∶1 with a binding constant of 2.66×10 9. | JIAOKui LIQing-jun SUNWei WANGZhen-yong | 2005 | Chemical Research in Chinese Universities2005，21，2： | 4 |
| 2 | Electrochemical Study on the Interaction Between Neutral Red and DNA显示文摘A voltammetric study of the interaction of neutral Red(NR) with DNA at a gold electrode in a phosphate buffer solution is described. After adding DNA in an NR solution, the reduction peak current of NR decreases. The binding mechahisms of NR to DNA in different pH ranges are different. The reduction peak potential of NR in a pH 7.0 phosphate buffer solution in the presence of DNA shifts positively, indicating that the binding of NR to DNA is intercalation action, but at pH=6.0 the reduction peak potential of NR shifts negatively, indicating that the binding of NR to DNA is electrostatic action. The formed complexes are DNA-NR when [NR]/[DNA]<0.18 and DNA-3NR when [NR]/[DNA]>0.35, respectively. | NIUShu-yan ZHANGShu-sheng SHIXin JIAOKui | 2005 | Chemical Research in Chinese Universities2005，21，1： | 3 |
| 3 | Electrochemical Determination of Alkaline Phosphatase in Human Serum by Differential Pulse Voltammetry显示文摘Differential pulse voltammetry(DPV) was applied to the determination of alkaline phosphatase(ALP) activity in human serum with phenyl phosphate as the substrate. Phenyl phosphate can enzymatically be hydrolyzed to produce phenol which is quantified by DPV at +660 mV(vs.Ag/AgCl) in the concentration range of 2.0100 μmol/L. The standard curve for ALP is linear over the range from 0.06 to 1000 U/L with a relative standard deviation of 3.0%. The conditions for the enzymatic reaction and voltammetric detection were optimized and the kinetic constants were also examined.The human serum samples were tested by this method and the results were in good agreement with those obtained by the routine p-nitrophenyl phosphate spectrophotometric method. | SUNWei JIAOKui WANGHai-yu LULu-de | 2004 | Chemical Research in Chinese Universities2004，20，6： | 1 |
| 4 | Structure and Biological Activities of 3-Phenyl-2-[1-benzoyl-1-(1,2,4-triazol-1-yl)] Methenyl Thiazolidine显示文摘The title compound 3-phenyl-2-[1-benzoyl-1-(1,2,4-triazol-1-yl)]methenyl thiazolidine was synthesized from acetophenone,triazole,phenylthioisocyanate and 1,2-dibromo-ethane by several step reactions. Its structure was identified by means of 1H NMR,MS and IR spectrometries. The single crystal structure of \{3-phenyl\}-2-[1-benzoyl-1-(1,2,4-triazol-1-yl)]methenyl thiazolidine was determined by X-ray diffraction. The preliminary bioassays have shown that the title compound exhibits the weak activities of fungicide and plant growth regulator. | XULiang-zhong JIANFang-fang QINYong-qi YUGuan-ping JIAOKui | 2004 | Chemical Research in Chinese Universities2004，20，3： | 0 |
| 5 | Synthesis and Crystal Structure of O-Ethyl-N- (2,3,4-tri-O-acetyl-β-D-xylopyranosyl)-thiocarbamate显示文摘The crystal and molecular structures of O-ethyl-N-(2,3,4-tri-O-acetyl-β-D-xylopyranosyl)-thiocarbamate were determined by X-ray crystallography. It crystallizes in the orthorhombic system with space group P2(1)2(1)2(1), lattice parameters a=0.90636(18) nm, b=0.94716(19) nm, c=2.1855(4) nm, V=1.8762(7) nm 3, and Z=4. All the substituents are in equatorial positions. There are four intramolecular interactions, each forming a five-membered ring. The molecules are linked by interactions to form three-dimensional framework. Atoms O6 and O8 show positional disorder. | YANGBo ZHANGShu-sheng WANGYan-fang LIXue-mei JIAOKui | 2005 | Chemical Research in Chinese Universities2005，21，2： | 0 |
| 6 | Studies on Synthesis and Biological Activities of Novel Triazole Compounds Containing Pyrimidine or N,N-Dialkyldithiocarbamate Ring显示文摘Twelve of the title compounds were synthesized. Their structures were identified by means of IR, EA, 1H NMR and MS. The IR spectra clearly show that the absorptions in the regions of 1716-1666 cm -1 and 1505-1499 cm -1 are the characteristic absorption bands for ν C=O and ν C=N . In the 1H NMR spectra of target compounds(10a-10g), three protons of a \{\}CH-CH 2- group present three sets of quartet peaks of the protons. The preliminary bioassays showed that the synthesized compounds exhibited some activities of fungicides and plant growth regulators. | XULiang-zhong ZHANGShu-sheng GAOHong-rong JIAOKui | 2003 | Chemical Research in Chinese Universities2003，19，4： | 0 |
| 7 | Crystal Structure of Bis(O,O′-diisopropyl dithiophosphate): [(C_3H_7O)_2PS_2]_2显示文摘The crystal and molecular structures of [(C 3H 7O) 2PS 2] 2(CCDC No.217201) were determined by means of X-ray crystallography. It crystallized in a triclinic system with space group P1 and lattice parameters a=0.82794(3) nm, b=0.84764(2) nm, c=0.85034(3) nm, α=97.78(3)°, β=110.77(3)°, γ=94.95(3)°, V=0.54701(9) nm3, Z=1. In this molecule, the two diisopropyl dithiophosphate groups, [(C 3H 7O) 2PS 2] 2, which are parallel to each other, are linked by an S—S bond and there exist inversion centers in the molecule. In the structure, the PS bonds in the two dithiophosphate units are trans-oriented to each other. | ZHANGShu-sheng LIXue-mei WANGJin-li WANJun JIAOKui | 2004 | Chemical Research in Chinese Universities2004，20，2： | 0 |
| 8 | Syntheses of Novel Highly Symmetric Carbohydrates Bearing Diacylhydrazine Framework显示文摘Several novel highly symmetric carbohydrates bearing a diacylhydrazine framework have been synthesized via a five-step procedure by utilizing D-glucose, D-galactose and D-xylose as the starting materials, respectively. The target compounds have been characterized with IR, 1H NMR and elemental analysis. | YANGBo ZHANGShu-sheng LIHui-xiang LIJi-zhi JIAOKui | 2005 | Chemical Research in Chinese Universities2005，21，4： | 0 |
| 9 | Studies on Syntheses and Biological Activities of Novel Triazole Compounds Containing Phosphorodithioate Groups显示文摘Sixteen new triazole organic phosphorus compounds were synthesized. Their structures were confirmed with IR, 1H NMR, elemental analysis and MS. The primary biological tests show that the titled compounds have the fungicidal activities, which are influenced by R groups and the substituents attached to the P atom. | XULiang-zhong ZHANGShu-sheng CHENXiao JIAOKui | 2003 | Chemical Research in Chinese Universities2003，19，3： | 0 |
| 10 | Studies on Synthesis and Biological Activities of Novel Triazole compounds Containing Thiophene Groups显示文摘Fifteen new triazole compounds containing thiophene groups were synthesized and their structures were confirmed by means of 1H NMR, IR, MS spectroscopies and elemental analyses. The preliminary biological tests show that the titled compounds exhibit some activities of fungicides and plant growth regulators. | XULiang-zhong ZHANGShu-sheng HUZhi-qiang JIAOKui | 2003 | Chemical Research in Chinese Universities2003，19，3： | 0 |
| 11 | Trihydrated Complex of Tetrabenzimidazole Copper(Ⅱ) Sulfate显示文摘A Trihydrated complex of benzimidazole copper(Ⅱ) sulfate [(C 7H 6N 2) 4CuSO 4]·3H 2O was synthesized and structurally characterized. The crystal structure of this compound is built up of six solvated water molecules and two dissimilar copper ions identified as Cu1 and Cu2. The coordination geometry of copper(Ⅱ) is a slightly distorted square pyramid. The four equivalent tertiary nitrogen atoms of the benzimidazole ligand form an equatorial plane, while the oxygen atoms of sulfato occupy the axial site. In the solid state, the title compound forms a three dimensional network structure via hydrogen bonds. The benzimidazole, sulfato ion and H 2O moieties are connected by the intermolecular hydrogen bonds. The (EPR) spectrum shows axial symmetry with g ⊥=2.039 and g ‖=2.285. Variable temperature magnetic susceptibility shows that there is a weak antiferromagnetic interaction between the neighboring copper(Ⅱ) ions. | JIANFang-fang WANGHuan-xiang XIAOHai-lian JIAOKui | 2005 | Chemical Research in Chinese Universities2005，21，1： | 0 |
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