摘要
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) dendrimer of G3.5 and G4.0 were synthesized by divergent method. Effects of the polyamidoamine dendrimer generation, pH value of solution and reaction time to the complexation between Cu^2+ , Co^2+ and polyamidoamine dendrimer were studied in this paper. The results showed that the maximum absorbing wavelength of Cu^2+/G4.0PAMAM dendrimer and Co^2+/G4.0PAMAM dendrimer occurred blue shift in the presence of G4.0 polyamidoamine dendrimer, but the G3.5 polyamidoamine dendrimer had seldom coordinated with Co^2+. When increasing reaction time, the absorbency intensity of Co^2+/G4.0PAMAM dendrimer enhanced, while the absorption curve of Cu^2+/G4.0PAMAM dendrimer had hardly changed. The solution pH value had strongly influence on the complexation between Cu^2+ , Co^2+ and polyamidoamine dendrimer, which supplied theory base to recycle.
出处
《陕西科技大学学报(自然科学版)》
2006年第1期35-38,共4页
Journal of Shaanxi University of Science & Technology