16-21

NEW COLORIMETRIC AND FLUORESCENT CHEMOSENSORS BASED ON DIPYRROMETHENE DYES

Synthetic bis(dipyrromethene)s (H2L) is very promising compounds to create sensory systems due to a combination of spectral-luminescent and chelating properties which sensitive to structural and solvation effects. Reactions of H2L·2HBr salts with amines are accompanied by changes in the color of the solution and a clear show a transformations of H4L2+ salt spec-trum in the H2L spectrum with a large (about 40 nm) difference between maxima of their in-tense bands which allows the use of 3,3'-bis(dipyrromethene) salts as colorimetric chemosen-sors of amines with sensitivity of detection upto 1·10–8 mol/l. The basis for the development of applied directions of using 3,3-bis(dipyrromethene)s as a fluorescent chemosensors of Zn2+, Cd2+ and Hg2+ ions is the bright coloristic effects, accompanying reactions of H2L with Zn(II), Cd(II) and Hg(II) salts, and significant differences in quantitative characteristics of the spec-tra of the complexes [M2L2] and ligands.

2016, Т. 59, № 6, Стр. 16-21