The fluorescence quenching of the pyrene derivatives (4-(1pyrenyl)butyl) trimethylammonium bromide (PBTMA), (1-(1pyrenyl)methyl) trimethylammonium iodide (PMTMA), and 1-pyrene sulfonic acid (PSA) by indole methyl substituted in positions 1 and 2, tryptophan and tryptamine, was studied in AOT/ heptan
Quenching of pyrene fluorescence by cupric ions in micellar solution: Effect of quenching on the polarity reported by the probe
โ Scribed by J. Jay; L.J. Johnston; J.C. Scaiano
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 473 KB
- Volume
- 148
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
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 lifetime is reduced and are attributed to the interdependence of kinetic and spectroscopic parameters.
* Issued as NRCC 28746.
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