Wavelength dependence of the fluorescence and singlet oxygen quantum yields of new photosensitizers
โ Scribed by Adina Lavi; Fred M. Johnson; Benjamin Ehrenberg
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 631 KB
- Volume
- 231
- Category
- Article
- ISSN
- 0009-2614
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The change in fluorescence quantum yield for indole 2s a function of ercitition wavelengg between 250 and 220 run is found to vary with the static dielectric constant of various alcohol-\vater mixtures at 296 K. The supports rhe intermediacy of I CTTS sbte in tile photoionization process.
The absolute quantum yield of the photosensitized luminescence from lag 0 2 has been measured in air-saturated solutions of tetraphenylporphin in CC14, the value (4.4 + 1.3) X 10 -3 being obtaified. The radiative lifetime of lAg O 2 is approximately constant in all solvents investigated and is 4.1 -
## Abstract Ruthenium(II) polypyridyl complexes with longโwavelength absorption and high singletโoxygen quantum yield exhibit attractive potential in photodynamic therapy. A new heteroleptic Ru^II^ polypyridyl complex, [Ru(bpy)(dpb)(dppn)]^2+^ (bpy=2,2โฒโbipyridine, dpb=2,3โbis(2โpyridyl)benzoquinox