Glutathionyl ferrocene (GSH-Fc) was synthesized from glutathione and ferrocenyl amine using O(benzotriazol-yl)-N,N,N',N'-tetramethyluronium (HBTU)/1-hydroxybenzotrizole (HOBT) as coupling agents in solution with a yield of 23.2%. The compound was characterized by H-1-NMR, IR and MS. Interactions of bovine serum albumin (BSA) with glutathionyl ferrocene were investigated by electrochemical methods. Experimental results revealed that there were specific interactions between BSA and GSH-Fc at the IIA subdomain. The binding constant and binding sites were obtained by linear sweep voltammetry and had values of 1.71 x 10(6) L center dot mol(-1) and 1.30, respectively. Fluorescence spectroscopy methods were employed to investigate the interaction between GSH-Fc and BSA as well. Results showed that the fluorescence of BSA was quenched by GSH-Fc during a static quenching process. The binding constant and the number of binding sites were obtained and had values of 2.74 x 10(-6) L center dot mol(-1) and 1.57, respectively, which agreed well with results from electrochemical experiments.

By means of chemical co-deposition method,Fe3O4 magnetic microspheres were prepared in carboxymethyldextran-H2O dispersed phase by ultrasonic pretreatment.The product was characterized by IR,TEM,AFM,XRD and vibrating sample magnetometer(VSM) methods.Results show that disperse of nanoparticles is improved by ultrasonic pretreatment method.The magnetic microspheres are roundness with an average size of 100 nm.These nanoparticles show supermagnetism with a magnetization of 35 emu·g-1.

Fe3O4 nano-powder was prepared by the hydrothermal method. The structure and morphology of the product were characterized by X-ray diffraction (XRD) and scanning electronic microscopy (SEM). The as-prepared powder has regularly spherical morphology, and the average size of product is about 25 nm. The possible application use of this material as the active mass of anode for rechargeable Li batteries was examined by cyclic voltammeter (CV), galvanostatic charge/discharge. The experimental results showed that this material exhibited large specific capacity at the first cycle, and the discharge and charge capacity retention of this electrode are 37.04% and 48.76%, respectively. Furthermore, the impedance change of Fe3O4 electrode under different cycle number and potential was examined.

Fe3O4 nanoparticles with different morphology such as sphere, nanowire, biscuit-like and quasi-cube were successfully prepared using a simple hydrothermal method. The products were characterized by powder X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM). The results showed that the morphology of product can be adjusted by changing the reaction conditions such as reaction time, different amount of surfactant added and the addition of organic solvent. In addition, the possible mechanism for the formation of different morphology under the corresponding reaction condition was suggested.

1′-cysteaminecarbonyl-1-glutathionecarbonyl-ferrocene (Fc-GSH) was synthesized from ferrocene dicarboxylic acid and reduced glutathione (GSH) with 4 steps. IR and 1H-NMR were used to characterize the products. Then Fc-GSH was immobilized on the surface of gold electrode. Cyclic votammetry (CV) was adopted to investigate the electrochemical properties of this Fc-GSH modified electrode in the absence and presence of Cd2+ aqueous solutions. The peak oxidation potential (E a) and reduction potential (E c) of Fc-GSH modified electrode were observed at E a = 0.74 V and E c = 0.64 V (vs Ag/AgCl) before the accumulation of Cd2+. This redox process is a monoelectron chemical reaction. The anodic shift is about 80 mV in the presence of 20 nmol/L of Cd2+ aqueous solution. Moreover, this shift is in proportion to the concentration of Cd2+ when the concentration of Cd2+ is lower than 20 nmol/L. So the modified electrode can be used as probes to detect cadmium ions with the limit of 0.1 nmol/L by cyclic voltammetry.

A novel kind of peptide-derived ferrocene compound Boc-HN-Fca-Gly-Gly-Tyr-Arg-OMe(7)(Fca is ferrocene amino acid) and Boc-HN-Fca-Gly-Gly-Tyr-Arg-OH(8) were synthesized from ferrocene,glycine,tyrosine and arginine through several steps.The synthetic methods of the oligopeptides were emphasized.The compounds were characterized by IR and 1H-NMR.Furthermore,cyclic voltammetry(CV) was used to investigate the electrochemical properties of the compounds.The results show that the yields of compounds(7) and(8) are 83.5% and 80.2%,respectively.The oxidation potential(Ea) and reduction potential(Ec) of Boc-HN-Fca-Gly-Gly-Tyr-Arg-OMe(7) are observed at 0.385 V and 0.346 V,respectively.The ratio of Jpa and Jpc is 1.055.For Boc-HN-Fca-Gly-Gly-Tyr-Arg-OH(8),the oxidation potential(Ea) and reduction potential(Ec) are observed at 0.532 V and 0.453 V,respectively.The ratio of Jpa and Jpc for compound(8) is 0.928.

Electrolysis of oxalic acid was performed at constant potential using AB5 hydrogen-storage alloy as catalytic reduction electrode.It was concluded that the appropriate superficial treatment and activation of hydrogen-storage alloy powder had an obvious effect on improving the current efficiency for glyoxylic acid.The best electrolysis conditions were of current density 120mA·cm-2,temperature30℃,1.0 mol·L-1 oxalic acid,which were ascertained after parallel experiment of current density,electrolysis temperature and oxalic acid concentration.The current efficiency and yield for glyoxylic acid under the best electrolysis condition was 86% and 88% respectively The current efficiency and yield for glyoxylic acid decreased with the number of electrolysis.

研究了用B掺杂替代A1对AB5型稀土贮氢合金相结构和电化学性能的影响.对M1Ni3.55Co0.75Mn0.4Al0.3-xBx(x=0,0.1,0.2,0.3)合金的研究结果表明:掺B后贮氢合金出现了CeCo4B第二相,导致贮氢合金的电化学容量下降;随B含量的增加和A1含量的减少,氢的扩散系数明显上升,合金的极化电阻减小,合金的高倍率放电性能和低温性能得到明显改善.

Abstract： In this paper, 1’-cysteaminecarbonyl-1-glutathionecarbonyl-ferrocene (Fc-GSH) (4) was firstly synthesized from ferrocene dicarboxylic acid and reduced glutathione (GSH) with several steps. The products were characterized by IR and 1H-NMR. Then Fc-GSH was immobilized on the surface of gold electrode. Cyclic votammetry (CV) was adapted to investigate the electrochemical properties of this Fc-GSH modified electrode in the cadmium ions aqueous solutions. In the presence of cadmium ions,large anodic shift was observed in the experiment. Moreover this shift was proportion to the concentration of Cd2+ when the concentration of cadmium ions is lower than 20 nM. So the modified electrode was used as probes to detect cadmium ions with the limitation of 0.1 nM by cyclic voltammetry.