Concerning the triplet energies of non-metallated phthalocyanines and the mechanism of singlet oxygen (1Δg)-sensitized phthalocyanine luminescence
✍ Scribed by D.M. Baigel; A.A. Gorman; I. Hamblett; T.J. Hill
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 259 KB
- Volume
- 43
- Category
- Article
- ISSN
- 1011-1344
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✦ Synopsis
Establishment of equilibria for triplet energy transfer between singlet oxygen ( ~ A ) and both 2, 3,17,23, and tetra-t-butylphthalocyanine (TBPC) (a) demonstrates that the identical triplet energies of these non-metallated phthalocyanines, 22.8 _+ 0.2 kcal mol-~, are very significantly less than hitherto thought and (b) provides strong support for a mechanism of IAg-sensitized phthalocyanine luminescence which involves triplet energy transfer from ~Ag to the phthalocyanine triplet, these two species being the electronically excited components of a triplet energy transfer equilibrium.