华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (4): 30-34.

• 化学化工 • 上一篇    下一篇

聚酰胺胺树状大分子与Co2+ 的相互作用

章昌华 胡剑青 涂伟萍   

  1. 华南理工大学 化工与能源学院,广东 广州 510640
  • 收稿日期:2006-02-22 出版日期:2007-04-25 发布日期:2007-04-25
  • 通信作者: 涂伟萍,教授,博士生导师. E-mail: cewptu @scut. edu. cn E-mail:zhangchanghuaI63@126.com
  • 作者简介:章昌华(1979-),男,博士生,主要从事高分子材料的合成与应用研究

Interaction Between Polyamidoamine Dendrimers and Co2+

Zhang Chang-hua  Hu Jian-qing  Tu Wei-ping   

  1. School of Chemical and Energy Engineering, South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-02-22 Online:2007-04-25 Published:2007-04-25
  • Contact: 涂伟萍,教授,博士生导师. E-mail: cewptu @scut. edu. cn E-mail:zhangchanghuaI63@126.com
  • About author:章昌华(1979-),男,博士生,主要从事高分子材料的合成与应用研究

摘要: 采用友散法合成了G3.5 和G4 .0 的聚酰胺胺( PAMAM) 树状大分子,研究了树状大分子的代数、树状大分子与Co2 + 的摩尔比、溶液pH 值、反应时间和温度对树状大分子与Co2 + 相互作用的影响.结果表明:当存在G4 .0 的聚酰胺胺树状大分子时,配合物水溶液的最大吸收波长出现在356nm 处;当存在G3.5 的聚酰胺胺树状大分子时,混合物水溶液在可见光区域几乎没有吸收;当聚酰胺胺树状大分子和Co2 + 的摩尔比由1: 10 变为1: 30 时,配合物水溶液在356nm 处的吸光度增加;随反应时间延长,配合物水溶液的吸光度增加;溶液pH 值和反应温度对聚酰胺胺树状大分子与Co2 + 的相王作用也有很大影响.

关键词: 分光光度法, 树状大分子, C02+, 相互作用

Abstract:

Polyamidoamine (PAMAM) dendrimers of G3. 5 and G4. 0 were synthesized by means of the divergent method. The effects of the dendrimer generation , the molar ratio of dendrimer to C02+ , the pH value of the solu-tion, the reaction time and the temperature on the interaction between polyamidoamine dendrimers and C02+ were then investigated. The results indicate that (1) the maximum absorption wavelength of PAMAMG4. 0/C02+ solution appears at 356 nmr,while the PAMAM G3.5/C02+ solution seldom shows light absorption in visibls spectrum,(2) the absorbency of PAMAM G4. 0/C02+  solution at 356nm increases when the molar ratio of PAMAM G4. 0 to C02+ changes from 1: 10 to 1: 30 , and the same phenomenon can be observed when increasing the reaction time , and ( 3) both the pH value of the solution and the reaction temperature greatly inf1uence the interaction between poly-amidoamine dendrimers and C02+  •

Key words: spectrophotometrγ, dendrimer, C02+ , interaction