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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Selective sensors for-Zn2+ cations based on new green fluorescent poly(amidoamine) dendrimers peripherally modified with 1,8-naphthalimides
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Selective sensors for-Zn2+ cations based on new green fluorescent poly(amidoamine) dendrimers peripherally modified with 1,8-naphthalimides

机译：基于新型绿色荧光聚（酰胺基胺）树状聚合物的Zn- +阳离子选择性传感器，该树枝状聚合物经1,8-萘二甲酰亚胺修饰

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The paper reports on the spectral photophysical characteristics of two new fluorescent PAMAM dendrimers of zero and second generation decoreted with 1,8-naphthalimide units, designed for ionic detection. The dendrimers were studied by H-1 NMR, C-13 NMR, FT-IR spectroscopy and elemental analysis. Their ability to detect ions has been evaluated in acetonitrile by monitoring the quenching of the fluoresence intensity. Different ions have been tested: Zn2+, CO2+, Ni2+, Cu2+ and Fe3+ for the purpose. The results have shown clearly that only Zn2+ could be efficiently detected using the dendrimer of second generation. In addition, it has been shown that for both dendrimers in a acetonitrile-water solution, the fluoresence intensity is pH dependant, hence could find application as a detector of harmful pH changes in the environment. (c) 2005 Elsevier B.V. All rights reserved.
机译：该论文报道了两种新的荧光PAMAM树枝状大分子的光谱光物理特性，该树枝状大分子零和第二代用1,8-萘二甲酰亚胺单元去甲壳，用于离子检测。通过H-1 NMR，C-13 NMR，FT-IR光谱和元素分析研究树枝状聚合物。通过监测荧光强度的猝灭，已评估了它们在乙腈中检测离子的能力。为此，已测试了不同的离子：Zn2 +，CO2 +，Ni2 +，Cu2 +和Fe3 +。结果清楚地表明，使用第二代树状聚合物可以仅有效检测到Zn2 +。另外，已经表明对于乙腈-水溶液中的两种树枝状大分子，荧光强度是pH依赖性的，因此可以用作环境中有害pH变化的检测器。 （c）2005 Elsevier B.V.保留所有权利。

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