The fluorescence from the St state of pyrene solubilized within the hydrophobic region of sodium dodecyl sulfate micelles has been studied as a function of concentration of some cationic additives to the aqueous phase. At concentrations of added quencher below ca\_ 10v3 mol dm -3 the fluorescence de
QUENCHING OF PYRENE FLUORESCENCE BY TRYPTOPHAN IN MICELLAR SOLUTIONS
β Scribed by M. V. Encinas; E. A. Lissi
- Book ID
- 114894857
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 631 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0031-8655
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Dynamic fluorescence quenching measurements have been performed on pyrene derivatives (pyrene (Py), 1-pyrenebutanoic acid (PBA), and 1-pyrenedodecanoic acid (PDA)), using as quenchers nitroxide free radicals (2,2,6,6-tetramethyl-1,1-piperidinyloxyl, 4hydroxy-2,2,6,6-tetramethyl-1,1-piperidinyloxyl,
The ratio of peak III to peak I intensities of the so-called III and I fluorescence bands of pyrene increases dramatically when cupric ions are used as quenchers for pyrene emission in sodium dodecyl sulfate micelles. These results indicate a decrease in the polarity sensed by the probe when its lif