Photophysics of sulphonated aluminum phthalocyanines in reversed micelles

Suman Dhami; Juan J. Cosa; Steven M. Bishop; Mary S. C. Simpson; David Phillips

doi:10.1117/12.168691

1 March 1994 Photophysics of sulphonated aluminum phthalocyanines in reversed micelles

Suman Dhami, Juan J. Cosa, Steven M. Bishop, Mary S. C. Simpson, David Phillips

Proceedings Volume 2078, Photodynamic Therapy of Cancer; (1994) https://doi.org/10.1117/12.168691
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary

Abstract

The photophysics of sulphonated aluminum phthalocyanines, AlPcS_n (n equals 0, 1, 2, 3 or 4), potential second-generation phototherapeutic agents for tumors, in cationic reversed micelles of benzyl ammonium hexadecyl chloride (BHDC) and anionic reversed micelles of sodium di(2-ethylhexyl) sulphosuccinate (AOT) have been investigated. Absorption spectroscopy, as well as steady state and time-resolved fluorescence emission studies, indicate that in BHDC the di- and tri-sulphonated derivatives are essentially monomeric whereas in AOT only the di-sulphonated phthalocyanine was found to be monomeric. The distribution of AlPcS_n in the reversed micelles, which appears to be strongly influenced by the extent of sulphonation and the environment of the reversed micelle, is discussed. It is anticipated that extrapolation can then be made to heterogeneous systems such as are found in biomembranes.

Citation Download Citation

Suman Dhami, Juan J. Cosa, Steven M. Bishop, Mary S. C. Simpson, and David Phillips "Photophysics of sulphonated aluminum phthalocyanines in reversed micelles", Proc. SPIE 2078, Photodynamic Therapy of Cancer, (1 March 1994); https://doi.org/10.1117/12.168691

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