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- Title
Determination of the quantum yield of singlet oxygen sensitized by halogenated boron difluoride dipyrromethenes.
- Authors
Kuznetsova, R.; Aksenova, Iu.; Bashkirtsev, D.; Shulev, A.; Antina, E.; Berezin, M.; Bumagina, N.
- Abstract
The spectral-luminescent, photophysical, and photochemical properties of dichloro-, dibromo-, and diiodo-derivatives of boron dipyrromethenate (BODIPY) have been studied, as well as the feasibility of generating singlet oxygen (O) via its photosensitization by the dihalogenated derivatives of BF dipyrromethene in solutions. Quantum yields of singlet oxygen have been determined using 1,3-diphenylisobenzofuran as the O trap. The lowest fluorescence quantum yields have been shown to correspond to the maximum yields of singlet oxygen. It has been found that the best O photosensitizer among the three test dihalotetraphenylaza- BODIPY is dibromotetraphenylaza-BODIPY, which in addition possesses the highest photostability. Diiodotetramethyl-BODIPY results in the singlet oxygen yield close to unity, but it has significantly lower photostability. The yield of singlet oxygen is affected by the solvent. Dibromtetraphenylaza-BODIPY and diiodotetramethyl-BODIPY may find use as a medium in photodynamic therapy and photocatalysis of oxidation reactions.
- Subjects
OXYGEN detectors; HALOGENATION; DIPYRRINS; LUMINESCENCE; PHOTOSENSITIZATION
- Publication
High Energy Chemistry, 2017, Vol 51, Issue 3, p175
- ISSN
0018-1439
- Publication type
Article
- DOI
10.1134/S0018143917030079