Relay recognition of F− and a nerve-agent mimic diethyl cyano-phosphonate in mixed aqueous media: discrimination of diethyl cyanophosphonate and diethyl chlorophosphate by cyclization induced fluorescence enhancement†,10.1039/C5RA24392K

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Lactoyl-CoA 全氟丁基戊烷白叶藤碱全氟己基辛烷新白叶藤碱壳寡糖特色专题-生物多肽

Relay recognition of F− and a nerve-agent mimic diethyl cyano-phosphonate in mixed aqueous media: discrimination of diethyl cyanophosphonate and diethyl chlorophosphate by cyclization induced fluorescence enhancement†

Avijit Kumar Das,Shyamaprosad Goswami,Ching Kheng Quah

RSC Advances Pub Date : 02/03/2016 00:00:00 , DOI:10.1039/C5RA24392K

Abstract

Anion to nerve agent simulant detection by relay recognition has been designed and realized for the first time with sequence specificity (F⁻ → DCNP) via a fluorescence “off–on–on” mechanism. The discrimination of DCNP and DCP via a CIFE (cyclization induced fluorescence enhancement) mechanism has also been demonstrated here. Test strips based on the sensors with F⁻ and DCNP are fabricated, which can act as convenient and efficient nerve agent and F⁻ test kits. The origin of the sequence specificity of different fluorescence recognition was revealed through single X-ray crystal and NMR analysis.