Picosecond Spectroscopy Of Metalloporphyrins And Hemoproteins

K. D. Straub; P. M. Rentzepis

doi:10.1117/12.937329

10 March 1987 Picosecond Spectroscopy Of Metalloporphyrins And Hemoproteins

K. D. Straub, P. M. Rentzepis

Proceedings Volume 0712, Lasers in Medicine; (1987) https://doi.org/10.1117/12.937329
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

Abstract

Picosecond spectroscopy has been used to study the excited state dynamics of metalloporphyrins and hemoproteins. The relative effects of intersystem crossing, low-lying charge transfer states and ligand ejection on the excited state lifetimes in various metalloporphyrins differs according to the properties of the central metal ion. Hemoproteins relax rapidly from the excited state but even in such fast processes ligand dissociation can occur, although not all axial ligands undergo photodissociation. In general, axial ligands, when present, can control the energy levels of the central metal and by doing so can control the rate of intersystem crossing and non-radiative decay through intermediate charge transfer states.

Citation Download Citation

K. D. Straub and P. M. Rentzepis "Picosecond Spectroscopy Of Metalloporphyrins And Hemoproteins", Proc. SPIE 0712, Lasers in Medicine, (10 March 1987); https://doi.org/10.1117/12.937329

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