Highly Sensitive Sensors for the Detection of Nitro Compounds Based on Pyrene Labeled Dendrons

被引:0
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作者
Andrea Ruiu
Mireille Vonlanthen
Pasquale Porcu
Israel Gonzalez-Méndez
Ernesto Rivera
机构
[1] Universidad Nacional Autónoma de México,Instituto de Investigaciones en Materiales
关键词
Pyrene; Dendrons; Sensor; Quenching; Nitro compounds;
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摘要
In this paper, we describe the synthesis and characterization of four novel pyrene labeled compounds, some of them dendritic, which can act as potential sensors for the detection of nitro compounds in methanol solution. Methanol was selected as solvent due to its polar properties, which provide similar characteristics to water. The obtained pyrene labeled molecules (PyOH, Pytb, PyNK1OH and PyNK1tb) were studied by UV–Vis and steady state fluorescence spectroscopy. Their application as sensors has been tested with three different nitro compounds: nitrobenzene, 1-chloro-2,4-dinitrobenzene and nitromethane. PyOH and Pytb showed a detection concentration limit for the analyzed quenchers in the order of nM, making these compounds suitable for high-sensitive sensoring. PyNK1OH and PyNK1tb displayed high sensibility at µM concentration. All the sensors showed an accurate response towards quencher analytes.
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页码:448 / 456
页数:8
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