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用发散法合成了G3.5和G4.0的聚酰胺胺(PAMAM)树状大分子,研究了聚酰胺胺树状大分子的代数、溶液的pH值、反应时间对聚酰胺胺树状大分子与Cu2+、Co2+配位作用的影响。结果表明,当G4.0的聚酰胺胺树状大分子存在时,Cu2+和Co2+的配合物水溶液的最大吸收波长都出现了蓝移。当G3.5的聚酰胺胺树状大分子存在时,G3.5的聚酰胺胺树状大分子几乎不和Co2+发生配位作用。延长反应时间,Co2+/G4.0PAMAM的吸收强度增加,但是Cu2+/G4.0PAMAM的吸收曲线几乎没有变化。溶液的pH值对G4.0的聚酰胺胺树状分子与Cu2+,Co2+配位作用有很大的影响,这为其循环使用提供了理论基础。
Polyamidoamine (PAMAM) dendrimers with G3.5 and G4.0 were synthesized by divergent method. The algebra of polyamidoamine dendrimers, the pH value of solution and the reaction time were studied. Effect of Cu2 + and Co2 + Coordination Molecules. The results show that when G4.0 polyamidoamine dendrimer exists, the maximum absorption wavelength of Cu2 + and Co2 + complexes appears blue shift. When G3.5 polyamidoamine dendrimer exists, G3.5 polyamidoamine dendrimer almost does not coordinate with Co2 +. When the reaction time was prolonged, the absorption intensity of Co2 + / G4.0 PAMAM increased, but the absorption curve of Cu2 + / G4.0 PAMAM almost did not change. The pH value of the solution has a great influence on the coordination of the polyamidoamine dendrimers of G4.0 with Cu2 + and Co2 +, which provides a theoretical basis for its recycling.