高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (09): 1991.doi: 10.3969/j.issn.0251-0790.2012.09.020

• 有机化学 • 上一篇    下一篇

Cu2+对联苯甲醛修饰的树状大分子聚酰胺-胺荧光性能的影响

韩巧荣, 陆天虹, 江玉亮, 王炳祥   

  1. 江苏省生物功能材料重点实验室, 南京师范大学化学与材料科学学院, 南京 210097
  • 收稿日期:2012-01-06 出版日期:2012-09-10 发布日期:2012-08-14
  • 通讯作者: 王炳祥,男,博士,教授,主要从事有机化学研究.E-mail:wangbingxiang@njnu.edu.cn E-mail:wangbingxiang@njnu.edu.cn
  • 基金资助:

    江苏省自然科学基金(批准号: BK2008435)和江苏省高校优势学科建设工程资助项目资助.

Effects of Cu2+ on Fluorescent Properties of Biphenyl-4-carbaldehyde Modified Polyamidoamine Dendrimers

HAN Qiao-Rong, LU Tian-Hong, JIANG Yu-Liang, WANG Bing-Xiang   

  1. Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
  • Received:2012-01-06 Online:2012-09-10 Published:2012-08-14

摘要:

采用小分子联苯甲醛(BPA)分别修饰第一和第二代树状大分子聚酰胺-胺(PAMAM), 合成了2种PAMAM的修饰产物G1-BPA4和G1-BPA8. 利用IR, 1H NMR及MALDI-TOF MS等手段表征了2种产物的结构, 研究了Cu2+浓度对其荧光性能的影响. 结果表明, 在一定的浓度范围内, 作为常见荧光猝灭剂的Cu2+能使2种产物的荧光均显著增强.

关键词: 树状大分子聚酰胺-胺(PAMAM), 联苯甲醛, 铜离子, 荧光探针

Abstract:

Two PAMAM-BPA dendrimers(G1-BPA4 and G2-BPA8) of generation one and two modified with biphenyl-4-carbaldehyde, were synthesized respectively. These PAMAM-BPA dendrimers were characterized by IR,1H NMR and MALDI-TOF MS. The effects of Cu2+ on the fluorescent properties of these dendrimers was studied. The results indicated that Cu2+ which usually as the fluorescent quenching agent, in proper concentration ranges, could enhance the fluorescence intensity of dendrimer G1-BPA4 and dendrimer G2-BPA8, perhaps due to the presence of the dendrimer effect. It provides a new research content for this kind of dendrimers as the dendrimer-copper hybrid fluorescent materials or as a fluorescence probe of Cu2+.

Key words: Polyamidoamine dendrimer, Biphenyl-4-carbaldehyde, Copper ion, Fluorescent probe

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