Photophysical And Photochemical Properties Of Purpurins

Alan R. Morgan; Greta M. Garbo; T. George Truscott

doi:10.1117/12.960197

17 March 1989 Photophysical And Photochemical Properties Of Purpurins

Alan R. Morgan, Greta M. Garbo, T. George Truscott

Proceedings Volume 0997, Advances in Photochemotherapy; (1989) https://doi.org/10.1117/12.960197
Event: O-E/Fiber LASE '88, 1988, Boston, MA, United States

Abstract

The photochemical and photophysical properties of purpurins have been investigated. Photophysical measurements indicate that these sensitizers have high quantum yields of long lived triplet excited states which efficiently quench molecular oxygen, giving rise to singlet oxygen. Irradiation of purpurins in light leads to oxidative cleavage of the isocyclic ring to form the corresponding formyl chlorins. In aqueous solutions, it appears that this species then undergoes hydration with a corresponding blue shift in the absorption of band I in the visible spectrum.

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Alan R. Morgan, Greta M. Garbo, and T. George Truscott "Photophysical And Photochemical Properties Of Purpurins", Proc. SPIE 0997, Advances in Photochemotherapy, (17 March 1989); https://doi.org/10.1117/12.960197

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