3-Amidocoumarins as chemodosimeters to trap cyanide through both Michael and intramolecular cyclization reaction

“…Several analytical methods have been reported for the determination of cyanide such as titration, [18][19][20][21] colorimetry and uorescence methods, 13,[22][23][24][25] voltammetry [26][27][28][29] chromatography [30][31][32] and atomic absorption spectrometry. 33,34 But most of them require complex preprocessing, expensive equipment, and special operators, and consume a large amount of time.…”

Section: Introductionmentioning

confidence: 99%

Development of a biomimetic sensor for selective identification of cyanide

et al. 2016

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“…Coumarin derivatives, in particular 7‐diethylaminocoumarin derivatives, have excellent optical properties, and as such are widely used as fluorescent chemosensors, laser dyes, and nonlinear optical materials . Our group has been devoted to the investigation of coumarin derivatives as cyanide chemosensors for several years . Herein, we report the synthesis of a series of 7‐dialkyl‐3‐aminocoumarin amide derivatives, and their crystal structures and photophysical properties in the solution and solid (powder) states have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Efficient Solution‐ and Solid‐State Fluorescence for a Series of 7‐Diethylaminocoumarin Amide Compounds

Sun

Zhao

et al. 2017

Asian J Org Chem

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As eries of 7-diethylaminocoumarina mide compounds with phenyl (1), benzyl (2), and benzothiazole (3) terminal groups have been synthesized. The crystal structures of compounds 1 and 2 were determined by using single-crystalX -ray diffraction. All of these compounds exhibited intense blue fluorescence and high fluorescence quantum yields in both THF (1:0 .36, 2:0 .43, 3:0 .27) and high-viscositys olvent (glycerol; 1:0 .32, 2:0 .38, 3:0 .41). Compound 1 displayed bright-yellow-greenf luorescence, with af luorescencem aximum at l = 537 nm and aq uantum yield of 0.47 in the solid (powder) state. For compound 1, we observedared shift of Dl = 72 nm and fluorescence enhancement in the solid state relative to that in THF.C ompound 2 emitted bright-blue fluorescence( l = 463 nm, F = 0.36) in the solid state, which was slightly blue-shifted relative to that in THF (l = 466 nm vs l = 482 nm) and appeared as an arrow peak with af ull-width-at-half-maximum of only 39 nm. The strong fluorescencee mission in high-viscosity glycerols olution and in the solid state may be attributed to restriction of the rotation of the 7-diethylamino group, which led to non-radiativedeactivation.

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3-Amidocoumarins as chemodosimeters to trap cyanide through both Michael and intramolecular cyclization reaction

Cited by 40 publications

References 35 publications

Organic chemodosimeter for cyanide: A nucleophilic approach

Organic chemodosimeter for cyanide: A nucleophilic approach

Development of a biomimetic sensor for selective identification of cyanide

Efficient Solution‐ and Solid‐State Fluorescence for a Series of 7‐Diethylaminocoumarin Amide Compounds

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