Time-resolved fluorescence study of the single tryptophan in thiocyanate and azide derivatives of horseradish peroxidase: Implication for apH-induced conformational change in the heme cavity

1995 ◽  
Vol 107 (4) ◽  
pp. 505-518
Author(s):  
Tapan K. Das ◽  
Shyamalava Mazumdar
Keyword(s):  
Horseradish Peroxidase ◽  
Conformational Change ◽  
Time Resolved Fluorescence ◽  
Fluorescence Study ◽  
Time Resolved ◽  
Derivatives Of

scholarly journals Фотофизические процессы в молекулах галогенпроизводных флуоресцеина в анионных обратных мицеллах

2020 ◽  
Vol 128 (12) ◽  
pp. 1842
Author(s):  
О.И. Волкова ◽  
А.А. Кулешова ◽  
Б.Н. Корватовский ◽  
А.М. Салецкий
Keyword(s):  
Reverse Micelles ◽  
Heavy Atom ◽  
Rotational Correlation Time ◽  
Dye Molecules ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Micellar Systems ◽  
Aqueous Micellar Solutions ◽  
Derivatives Of ◽  
Rotational Correlation

Studies of photophysical processes in aqueous micellar solutions of halogen derivatives of fluorescein: Eosin( E), Erythrosin (ER) and Bengal Rose (BR) by methods of dynamic light scattering, stationary and time-resolved fluorescence spectroscopy were carried out. It was found that the introduction of dye molecules into reverse AOT micelles causes an increase in their hydrodynamic radii Rh. The time-resolved fluorescence of the studied dye molecules in reverse micelles was measured. A decrease in the average time of the excited state with an increase in Rh for E, ER, and BR was found, which is associated with an increase in the mobility of water molecules and a decrease in the effect of geometric restriction of dye molecules. The degrees of anisotropy of the fluorescence r of dye molecules in reverse micelles were measured. It was shown that in micellar systems r is greater than in aqueous solutions and decreases with increasing Rh. The rotational correlation time for the studied dye molecules in micellar systems is determined, which decreases for all the studied dyes with an increase in Rh, indicating a decrease in the microviscosity of the confined aqueous medium inside the micelle. In this case , i.e., the value of the time of the rotational correlation is affected by the "heavy atom effect".

The time-resolved fluorescence study of kinetics and thermodynamics of Eu(iii) and Tb(iii) complexes with the DO2A macrocyclic ligand

2018 ◽  
Vol 42 (10) ◽  
pp. 7993-8000
Author(s):  
Filip Smrčka ◽  
Přemysl Lubal
Keyword(s):  
Fluorescence Spectroscopy ◽  
Macrocyclic Ligand ◽  
Time Resolved Fluorescence ◽  
Fluorescence Study ◽  
Time Resolved ◽  
Kinetics And Thermodynamics ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of Formation ◽  
Kinetics Of

The thermodynamics and kinetics of formation/dissociation of Eu(iii) and Tb(iii) with the H2DO2A macrocyclic ligand were studied by time-resolved fluorescence spectroscopy.

Tryptophan interactions of gramicidin A′ channels in lipids: a time-resolved fluorescence study

1986 ◽  
Vol 862 (2) ◽  
pp. 265-272 ◽  
Author(s):  
Lanfranco Masotti ◽  
Paolo Cavatorta ◽  
Giorgio Sartor ◽  
Emanuela Casali ◽  
Arthur G. Szabo
Keyword(s):  
Gramicidin A ◽  
Time Resolved Fluorescence ◽  
Fluorescence Study ◽  
Time Resolved
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