Influence of structural and solvation factors on the spectral-fluorescent properties of alkyl-substituted BODIPYs in solutions
作者:Natalia A. Bumagina、Elena V. Antina、Mikhail B. Berezin、Alexander A. Kalyagin
DOI:10.1016/j.saa.2016.09.026
日期:2017.2
The spectral-fluorescent properties of alkyl-substituted BODIPYs 1–5 in organic solvents were investigated. The alkyl-substituted BODIPYs 1–5 exhibit intense chromophoric properties (lgε = 4.60–5.00). Relative fluorescence quantum yield of studied compounds reaches 66–100% and weakly dependent on the structural and solvation effects. Introduction of methyl, propyl, amyl and heptyl substituents in the
The influence of alkylation on the photophysical properties of BODIPYs and their labeling in blood plasma proteins
作者:Lyubov A. Antina、Alexander A. Ksenofontov、Alexander A. Kalyagin、Pavel S. Bocharov、Nadezhda V. Kharitonova、Alexander V. Kazak、Elena V. Antina、Mikhail B. Berezin
DOI:10.1016/j.molliq.2020.112717
日期:2020.4
The influence of BODIPYs alkylation on the spectral properties in different polarity solvents, PMMA, Langmuir-Schaefer films was studied. The BODIPYs exhibit intense absorption and fluorescence in different nature solvents and PMMA films. The aggregation behavior of BODIPY in Langmuir–Schaefer films was studied. The interaction process of BODIPYs with BSA has been investigated by the multi-spectroscopic
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.