Tripyrroledimethine-derived ('texaphyrin'-type) macrocycles: potential photosensitizers which absorb in the far-red spectral region (Invited Paper)

Jonathan L. Sessler, Gregory Hemmi, Bhaskar G. Maiya, Anthony Harriman, Millard M. Judy, Richard Boriak, James L. Matthews, Benjamin Ehrenberg, Zvi Malik, Yeshayahu Nitzan, Angelika C. Ruck

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

20 Scopus citations

Abstract

Three new cadmium(II)-containing tripyrroledimethine-derived, 'texaphyrin'-type, macrocycles are discussed. These compounds, which contain extended π-systems, possess strong, low-energy, Q-like absorption bands in the 650-900 nm spectral region, making them of possible interest in photodynamic applications. Time-resolved absorption and emission laser studies have been carried out and the fluorescence and triplet absorption spectra, excited state yields and lifetimes, O2-quenching rate constants, and quantum yields for formation of O2(1Δg) measured and related to the structure of the macrocycle. The results of preliminary cell localization and in vitro photodynamic anti-viral, anti-bacterial, and anti-leukemic cell inactivation studies carried out with these and/or the parent o-phenylenediamine-derived parent texaphyrin system, are also presented.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages318-329
Number of pages12
ISBN (Print)0819405167
StatePublished - 1991
Externally publishedYes
EventOptical Methods for Tumor Treatment and Early Diagnosis: Mechanisms and Techniques - Los Angeles, CA, USA
Duration: 23 Jan 199125 Jan 1991

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1426
ISSN (Print)0277-786X

Conference

ConferenceOptical Methods for Tumor Treatment and Early Diagnosis: Mechanisms and Techniques
CityLos Angeles, CA, USA
Period23/01/9125/01/91

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