Dipyrromethene chromo-fluorogenic chemosensors for quantitative detection and express analysis of Zn2+ ions
作者:Natalia A. Bumagina、Elena V. Antina、Zinaida S. Krasovskaya、Mikhail B. Berezin、Alexander A. Ksenofontov、Anatoly I. Vyugin、Alexander S. Semeikin
DOI:10.1016/j.molliq.2021.117834
日期:2022.1
Hexamethyl-substituted dipyrromethene had high selectivity towards Zn2+ ions over many environmentally relevant ions, and high sensitivity with the detection limit in nanomolar level (4·10–8 mol/L). In terms of the thermodynamic constant and the fluorescence response of the complexation reaction of [ZnL2], as well as the detection limit of Zn2+ ions, dipyrromethene HL2 surpasses many Zn2+ sensors known in the
The properties of transition-metal complexes of dipyrromethenes. Part I. The spectra and magnetic moments of some nickel(II) complexes
作者:J. Ferguson、B. O. West
DOI:10.1039/j19660001565
日期:——
Bis(dipyrromethenato)nickel(II) chelates with five 4,4′- and 5,5′- substituted dipyrromethenes have been prepared. Their magnetic moments and ligand-field spectra have been used to infer their stereochemistries in the solid state, in pyridine, and benzene solutions.
Effect of Alkyl, Aryl, and meso-Aza Substitution on the Thermal Stability of BODIPY
作者:N. A. Bumagina、A. Yu. Kritskaya、E. V. Antina、M. B. Berezin、A. I. V’yugin
DOI:10.1134/s0036023618100030
日期:2018.10
The effect of peripheral alkyl, aryl, and meso-aza substitution on the thermal stability of BODIPYs in an argon or oxygen atmosphere has been analyzed using thermogravimetric study results. It has been shown that an increase in the length of 2,6-alkyl substituents to seven carbon atoms is accompanied by the growth of BODIPY thermal stability by 80 degrees C. The greatest increase in the destruction temperature of BODIPY (by 100 degrees C) is attained via the introduction of phenyl groups in the 1,3,5,7-positions of its dipyrromethenmethene framework. meso-Aza substitution does not almost produce any effect on the thermal stability of BODIPY dyes. The BODIPY destruction beginning temperature decreases by 60-90 degrees C in the presence of air oxygen. The thermal stability of BODIPY tends to decrease with reducing degree and symmetry of alkyl substitution in the dipyrromethene framework. A lower thermal stability of BODIPY in comparison with zinc(II) dipyrromethenates is due to the participation of fluorine atoms in intramolecular redox processes.
Fischer, H.; Walach, B., Liebigs Annalen der Chemie, 1926, vol. 450, p. 109 - 132