ANtract--The fluorescence quenching of polystyrene by oxygen at room temperature was investigated. The diffusion coefficient of oxygen in polystyrene films was taken as 3.1 x 10 -7 cm2/sec; the energy migration coefficient of polystyrene in the excited singlet state was estimated as 6 x 10 6 cm2/sec
Fluorescence Quenching by Oxygen: “Debunking” a Classic Rule
✍ Scribed by Franco M. Cabrerizo; Jacob Arnbjerg; M. Paula Denofrio; Rosa Erra-Balsells; Peter R. Ogilby
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 163 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1439-4235
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Next‐generation photodynamic therapy agents will minimize extraneous phototoxicity by being active only at the target site. To this end, we have developed a model system to systematically investigate the excited‐state quenching ability of a number of metalloporphyrins. Central metal ion
The quenching by oxygen of the fluorescence of concentrated pyrene solutions in toluene occurs in less than 2 x lo-lo sec. The molecule of 02 is available for further quenching after this time. The results are interpreted in terms of a mechanism in v5hich a pyrene excimer is quenched by rapid revers
pulsed nitrogen laser is appiied for studying the quenching of aromatic hydrocarbons fluorescence by oxygen. In non-polar solvents the process induces intersystem crossing to the triplet state with a quantum yield of unity. Effects of solvent polarity suggest that the interaction between Sl and O2(