Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (1): 181.

• Articles • Previous Articles     Next Articles

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.

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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