Bispyrenylalkane chemosensor for the naked-eye detection of nitro-explosives / I. S. Kovalev, L. K. Sadieva, O. S. Taniya [et al.] // Chimica Techno Acta. - 2021. - Vol. 8, № 2. - P20218209 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DETECTION OF EXPLOSIVES IN AQUEOUS MEDIA -- CHEMICAL SENSORS -- FLUORESCENCE QUENCHING -- PYRENE-BASED FLUOROPHORES Аннотация: Pyrene-based compounds have a great potential as fluorescent chemosensors for various analytes including common nitroexplosives, such as 2,4,6-trinitrotoluene (TNT). Compounds having two pyrene units in one molecule, such as bispyrenylalkanes, are able to form stable, bright emissive in a visual wavelength region excimers both in non-polar and polar environments. In this work we wish to report that in non-polar solvents the excimer has poor chemosensing properties while in aqueous solutions it provides significant “turn-off” fluorescence response to TNT in the subnanomolar concentrations. |