高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (1): 181.

• 研究论文 • 上一篇    下一篇

Cu2+对树状大分子PAMAM-FCD荧光性能的影响

韩巧荣1,2, 王炳祥2, 丁马太1, 何旭敏1   

  1. 1. 厦门大学化学化工学院, 厦门 361005;
    2. 南京师范大学化学与环境科学学院, 南京 210097
  • 收稿日期:2009-04-18 出版日期:2010-01-10 发布日期:2010-01-10
  • 通讯作者: 何旭敏, 女, 博士, 教授, 从事金属有机及高分子材料研究. E-mail: hejin@xmu.edu.cn
  • 基金资助:

    教育部新世纪优秀人才支持计划项目(批准号: NCET-04-0603)和江苏省高校自然科学基础研究面上项目(批准号: 07KJD150097)资助.

Effect of Cu2+ upon the Fluorescent Properties of Dendrimer PAMAM-FCD

HAN Qiao-Rong1,2, WANG Bing-Xiang2, DING Ma-Tai1, HE Xu-Min1*   

  1. 1. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;
    2. College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097, China
  • Received:2009-04-18 Online:2010-01-10 Published:2010-01-10
  • Contact: HE Xu-Min. E-mail: hejin@xmu.edu.cn
  • Supported by:

    教育部新世纪优秀人才支持计划项目(批准号: NCET-04-0603)和江苏省高校自然科学基础研究面上项目(批准号: 07KJD150097)资助.

摘要:

以小分子2-芴醛(FCD)修饰树状大分子聚酰胺-氨PAMAM, 合成了1~3代树状大分子PAMAM-FCD, 用IR, 1H NMR和MALDI-TOF-MS等手段表征了化合物结构, 研究了Cu2+浓度对其荧光及紫外性能的影响. 结果表明, Cu2+可使其荧光强度和紫外吸收不同程度地增强. 在紫外光谱中, Cu2+自身的吸收峰消失, 表明Cu2+参与配位. PAMAM-FCD有望成为蓝光区荧光材料及树状大分子-铜杂化材料.

关键词: 树状大分子; 2-芴醛; Cu2+; 荧光; 杂化材料

Abstract:

Dendrimer of polyamidoamine PAMAM was modified with 2-fluorenecarboxaldehyde(FCD)to form dendrimers PAMAM-FCD of generation one, two and three, respectively. Structures and properties of PAMAM-FCD were characterized by IR, 1H NMR and MALDI-TOF-MS, with special attention being paid to the effect of Cu2+ on the fluorescent and UV spectra of these dendrimers. The results show that, even though Cu2+ usually behaves as a fluorescence quencher, it can significantly enhance the fluorescence of these dendrimers. Furthermore, the absorbance of PAMAM-FCD in the UV spectrum was also found to increase with the addition of Cu2+. The disappearance of the absorbance of Cu2+ itself suggest that coordination reaction between Cu2+ and PAMAM-FCD has occurred. These PAMAM-FCD dendrimers are promising to be the scarce material to emit blue fluorescence or as a dendrimer-copper hybrid material.

Key words: Dendrimer; 2-Fluorenecarboxaldehyde; Cu2+; Fluorescent; Hybrid material

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