Synthesis Of M Irco/Nano Conductive Polymers With Rod-like Coordination Templates

Rod-like templates of copper glycine (Cu(Gly)2) and nickel dimethylglyoxime (Ni(dmg)2) were synthesized. Upon these templates, polypyrrole(PPy),polyaniline(Pani), and poly (3,4-ethylenedi oxythiophene)(PEDOT) were deposited on their surface by wet method, respectively, and corresponding microtubes could be formed after the templates were removed. Their structures were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), optical microscope, X-ray powder diffraction (XRD), thermal analysis, infrared spectroscopy (IR) etc. The effects of pH, concentration, temperature, time and ultrasonication on the morphologie, size and crystal structure of the as-prepared products were studied.Micro/nanorods water-soluble copper glycine were synthesized by the reaction of glycine and copper acetate on a large scale via organic solvent-induced crystallization. The size of copper glycine micro/nanorods were increased with the rise of crystallization temperature, the decrease of Cu(Gly)2concentration and the prolong of synthesis time. When reaction temperature were60℃、40℃、20℃、 and0℃, respectively, the corresponding diameters of rod-like Cu(Gly)2crystals were350nm、300nm、180nm and80nm。Ultrasound processing would be helpful to the reduction of crystal size of copper glycine at low concentration of Cu(Gly)2, while it had little influence on the size at high concentration of Cu(Gly)2.In addition, irregular or dendritic copper glycine crystal would occur when the alcohol-water ratio was10:1.Using glycine copper as a template and ammonium persulfate as an oxidant, polypyrrole and polyaniline micro/nano-tubes were prepared via chemical oxidation in ethanol solution. TEM graphs showed that the products have tubular structure. With large size template, polypyrrole nanotubes were obtained with a thickness about25nm and inner diameter of85nm, while with small-size template, a mixture of polypyrrole nanotubes and nanobelts were prepared, which wall thickness and inner diameter of PPy nanotubes were about25nm and20nm, respectively, the width and the thickness of the nanobelts were about60-120nm and25nm. SAED indicated that the prepared product was amorphous. The diameter was increased with the rise of APS concentration, the decrease of template concentration and large-size template used. However, only irregular morphology was obtained when the template concentration decreased to1.3×10-3M due to the template decomposition. when the oxidant was lacked, the prepared product could be collapsed to form ribbon or sheet morphologies. Pani was also prepared using iron chlorides(FeCl3) and hydrogen peroxide(H2O2) as oxidants, and its improved surface was attain for the slow polymerization due to weak oxidative ability of FeCl3and H2O2.Nickel dimethylglyoxime nanorods with an average diameter about54nm, length range from100to600nm were synthesized with nickel chloride and alkaline dimethylglyoxime. The nanorod composite was prepared with nickel dimethylglyoxime nanorod coved by PEDOT. The rod diameter of PEDOT composite would increase with the rise of APS concentration and the reduction of templates. The surface of PEDOT composite rod would improved by the addition of glycine as buffer.