Sensors for detecting metal ions and protons based on new green fluorescent poly(amidoamine) dendrimers peripherally modified with 1,8-naphthalimides

详细信息    查看全文

• 作者：Ivo Grabchev and Sylvie Guittonneau
• 关键词：Dendrimers ; PAMAM ; 1 ; 8-Naphthalimides ; Sensors ; Environmental
• 刊名：Journal of Photochemistry and Photobiology A: Chemistry
• 出版年：2006
• 出版时间：1 April 2006
• 年：2006
• 卷：179
• 期：1-2
• 页码：28-34
• 全文大小：361 K

文摘

Two recently synthesized poly(amidoamine) dendrimers from zero and second generation whose periphery comprises fluorescent 4-piperidino-1,8-naphthalimide units have been investigated as potential sensors of metal cations and protons. The photophysical characteristics of the dendrimers have been determined by fluorescence and absorption spectroscopy. Experiments have been performed in the presence of Zn²⁺, Ni²⁺, Ce³⁺, Cu²⁺, Co²⁺ and Ag⁺ cations. The increase in the fluorescence intensity of the dendrimers in the presence of protons indicates their sensitivity to the protons. The response of the dendrimers ligands depends on the nature of the added metal cations. The best performance is accomplished for detecting Cu²⁺ and Co²⁺ cations. The results obtained reveal the capacities of these systems to act as reliable detectors of environment pollution by metal cations and protons.