21 January 1990 Photosensitization with deep red light
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Proceedings Volume 10306, Future Directions and Applications in Photodynamic Therapy; 103060A (1990) https://doi.org/10.1117/12.2283672
Event: SPIE Institutes for Advanced Optical Technologies 6, 1990, San Diego, California, United States
This paper concerns the use of deep-red light absorbing chromophores as potential photosensitizers for photodynamic therapy (PDT). In setting the scene, the role of scattering by tissues and of the availability of convenient laser light sources are considered. In terms of long wavelength extremes for the production of singlet oxygen, it is pointed out that the energy gap between S1 and T1 (EST) is the critical factor. Some of the photophysical and photochemical properties of naphthalocyanines and octabutoxyphthalocyanines are presented. Both species absorb strongly at 740 nm and beyond. Finally, the tissue distribution and phototherapeutic effectiveness in animal tumor models is outlined. Delivered doses as low as 0.5 mg/kg body weight are optimally effective.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael A. J. Rodgers, Michael A. J. Rodgers, } "Photosensitization with deep red light", Proc. SPIE 10306, Future Directions and Applications in Photodynamic Therapy, 103060A (21 January 1990); doi: 10.1117/12.2283672; https://doi.org/10.1117/12.2283672

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