Synthesis and application of fluorescent probe for detecting diethyl chlorophosphate

Abstract

The invention discloses synthesis and application of a fluorescent probe for detecting diethyl chlorophosphate. A 1, 1 '-binaphthol structure based silicon compound fluorescent probe is synthesized. The silicon-containing compound fluorescent probe can realize specific detection of diethyl chlorophosphate serving as a war poison stimulant; the response speed is high, the detection limit is low; the light-emitting wavelength is long; the commercial degree is high; the cost required by probe synthesis is greatly reduced; the invention further discloses an application method of the fluorescent probe for detecting diethyl chlorophosphate based on normalization processing data. A miniature spectrum analyzer, an excitation light source and a computer are adopted to carry out signal transmissionthrough a signal transmission optical fiber, unique advantage of electromagnetic interference resistance is achieved, the optical fiber probe has the advantage of corrosion resistance, due to the accuracy of optical signals, the sensor is different from conventional naked eye observation, and the sensor has the advantage of being high in diethyl chlorophosphate steam detection accuracy.

Description

technical field [0001] The invention relates to the synthesis and application of a fluorescent probe for detecting diethyl chlorophosphate, and belongs to the technical field of synthesis and application of fluorescent probes for war nerve agent simulants. Background technique [0002] Organophosphorus compounds (OPS) have been widely used in agriculture as pesticides and herbicides due to their high toxicity, and have also been used in warfare as chemical warfare agents (CWA). Among them, G-type nerve agents appeared during World War II, including Tabun, Sarin, Soman and Cyclosarin. They can cause irreversible damage to the enzyme acetylcholinesterase in the human nervous system and affect neurotransmission, and people exposed to nerve agents die of respiratory paralysis within minutes. Although such CWAs are strictly restricted in the international community, there are still incidents where terrorists use them to take people's lives, such as the terrorist attack on the To...

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Problems solved by technology

In addition, although some fluorescent probes are currently used to detect war toxin simulants, most of the applications of such fluorescent probe molecules are in solutions or on test paper.

For example, the research work carried out by S.Huang, Y.Wu, F.Zeng, L.Sun, S.Wu et al. is mostly based on the detection test paper for the detection of diethyl chlorophosphate vapor. This application has the problem that it cannot be represented by accurate data, and can only be identified by naked eye observation. The research work of S.K.Sheet, B.Sen, S.Khatua and others shows that the current fluorescence detection test paper is all by naked eye observation. Qualitative description and identification are carried out, and the concentration of diethyl chlorophosphate vapor is judged by the response of different diethyl chlorophosphate vapor concentrations to fluorescence. Due to the presence of more interference in the solution and the poor detection accuracy, the difference is obvious and cannot be accurate. The detection of diethyl chlorophosphate vapor concentration

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