scholarly journals Dynamic fluorescence measurements of rose bengal photosensitization in octanol

2020 ◽  
Author(s):  
YINAN ZHANG ◽  
Sharon L Neal
Keyword(s):  
Rose Bengal ◽  
Fluorescence Measurements ◽  
Dynamic Fluorescence

scholarly journals The role of polymer flexibility on the interaction with surfactant micelles: poly(vinyl alcohol) and sodium dodecyl sulphate aqueous micelle interactions studied by dynamic fluorescence quenching

1995 ◽  
Vol 73 (11) ◽  
pp. 1765-1772 ◽  
Author(s):  
Jan. Van Stam ◽  
Nadine. Wittouck ◽  
Frans C. De Schryver ◽  
Mats Almgren ◽  
Maria da Graça Miguel
Keyword(s):  
Fluorescence Quenching ◽  
Sodium Dodecyl Sulphate ◽  
Vinyl Alcohol ◽  
Surfactant Concentration ◽  
Sodium Dodecyl ◽  
Critical Aggregation Concentration ◽  
Poly Vinyl Alcohol ◽  
Fluorescence Measurements ◽  
Aggregation Numbers ◽  
Dynamic Fluorescence

The interactions between poly(vinyl alcohol) and the surfactant sodium dodecyl sulphate in aqueous solutions have been investigated by means of static and dynamic fluorescence measurements. By static fluorescence measurements the onset of interaction, the critical aggregation concentration, is determined to be 6.5 mM at 20 °C and 7.0 mM at 40 °C. By dynamic fluorescence measurements without added quencher the influence on the lifetime of the fluorescent probe, pyrene, by the presence of the polymer is investigated. From measurements with an added quencher, dimethylbenzophenone, the surfactant aggregation numbers of the micellar aggregates formed upon interaction between the surfactant and the polymer and the quenching rate constant are obtained. At the two polymer concentrations, i.e., 0.2% and 2.0%, the surfactant aggregation numbers at low surfactant concentration are very small, but increase rapidly with increasing surfactant concentration. Comparisons are made with results from a system where poly(ethylene oxide) instead of poly(vinyl alcohol) is the polymer. Key words: dynamic fluorescence quenching, polymer–surfactant interactions, aggregation numbers.

Dynamic Fluorescence Measurements of Two-State Systems: Applications to Calcium-Chelating Probes

1993 ◽  
Vol 209 (2) ◽  
pp. 209-218 ◽  
Author(s):  
K.M. Hirshfield ◽  
D. Toptygin ◽  
B.S. Packard ◽  
L. Brand
Keyword(s):  
Fluorescence Measurements ◽  
Dynamic Fluorescence

Steady-State and Dynamic Fluorescence Measurements of a Perylene-Labeled Triblock Copolymer:  Evidence for Ground-State Dye Aggregate Formation

1999 ◽  
Vol 32 (15) ◽  
pp. 4895-4904 ◽  
Author(s):  
Matthew Moffitt ◽  
J. P. S. Farinha ◽  
M. A. Winnik ◽  
Ulrike Rohr ◽  
Klaus Müllen
Keyword(s):  
Steady State ◽  
Ground State ◽  
Triblock Copolymer ◽  
Aggregate Formation ◽  
Fluorescence Measurements ◽  
Dynamic Fluorescence
Sign in / Sign up

Export Citation Format

Share Document