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采用树状聚酰胺-胺(PAMAM)大分子化合物与同多酸阴离子[Mo6O19]2-,基于静电作用合成了同多金属氧酸盐/树型分子超分子化合物。用元素分析、FTIR、UV-V is、TG/DTA、荧光光谱等测试技术分别对样品进行了结构表征及性能测试。并利用其作为电极修饰剂,制得化学体修饰的碳糊电极(CMCPE),用循环伏安法研究了同多金属氧酸盐/树型分子超分子化合物修饰碳糊电极在1 mol/L H2SO4水溶液中的电化学行为。结果表明,该化合物具有良好的荧光性能和可逆光致变色性能;用该化合物修饰的碳糊电极与[Mo6O19][N(C4H9)2]2修饰的电极相比,在-0.2~0.2 V范围内多了1对氧化还原峰;当扫描速率低于100 mV/s时,该电极过程为表面控制过程,而当扫描速率高于100 mV/s时,电极过程变为扩散控制过程;且该电极在室温下具有很好的稳定性。 相似文献
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An inorganic-organic composite was prepared by poly(amidoamine) (PAMAM) dendrimer reacting with cobalt(Ⅱ)-monosubstituted polyoxometalates Na5Co^Ⅱ(H2O)PW11O39 (PW11CO) in an aqueous solution. The hybrid composite PW11Co/PAMAM was characterized by FT-IR, UV-Vis diffuse reflectance spectra (DR-UV-Vis), XPS, XRD and TG/DTA, indicating that the PWI iCo was chemically anchored to PAMAM. The morphologies of the title composite were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The catalytic activity was evaluated by oxidation of isobutyraldehyde (IBA) to isobutyric acid (IBAc) in MeCN under mild conditions (20 ℃, ambient pressure), showing that the title compound is a more effective and recoverable catalyst than corresponding PW11Co. 相似文献
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