Steady-state fluorescence, lifetime measurements and time-resolved absorption spectra of the covalentty linked heterc dimers consisting of pheophorbide and porphyrin revealed rapid ( 1011-10'2 s-' ) and efficient singlet-singlet excitation energy transfer from porphyrin unit to pheophorbide.
Excitation energy transfer in covalently bonded porphyrin heterodimers
✍ Scribed by V. Z. Paschenko; N. V. Konovalova; A. L. Bagdashkin; V. V. Gorokhov; V. B. Tusov; V. I. Yuzhakov
- Book ID
- 114989762
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2012
- Tongue
- English
- Weight
- 285 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0030-400X
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Intramolecular transfer processes in porphyrin-phthalocyanine heterodimers covalently linked by an oxygen atom (restricted conformation) and/or by a flexible chain of variable length were investigated. Fluorescence spectroscopy shows that singlet-singlet energy transfer from the porphyrin to the pht
## Abstract Photophysical properties of a porphyrin‐phthalocyanine heterodimer covalently linked with a dipentoxy chain have been studied. Absorption spectra show that there is weak exciton coupling between the two chromophores in the ground state. Fluorescence spectra show that intramolecular ener