Table of Contents
Laser Chemistry
Volume 1, Issue 1, Pages 45-57
http://dx.doi.org/10.1155/LC.1.45

Electronic Relaxation and Oxygen Recombination Processes in Photodissociated Oxyhemoglobin After Picosecond Flash Photolysis

Institut Curie and Université de Paris VII, France

Received 11 January 1982; Accepted 18 May 1982

Copyright © 1982 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Oxyhemoglobin photolysis has been investigated with picosecond laser techniques. Transient light absorption changes observed within 500–600 nm reveal two processes following photodissociation: electronic relaxation up to 400 ps after dissociation and a partial religation during 3 ns. The kinetics of oxygen geminate recombination at pH 7 and 22°C has a monoexponential decay with a lifetime of 1.5 ns ± 0.1 ns.