LASER FLASH SPECTROMETRIC INVESTIGATIONS OF BIRADICALS AND CAGED RADICAL PAIRS

Article abstract of DOI:10.1016/0040-4020(82)80161-0

The use of laser flash spectroscopic techniques allows the detection, identification and dynamic analysis of biradicals and caged radical pairs in fluid solution at ambient temperatures.The conventional flash spectroscopic device has been advanced with the advent of the Excimer Laser, as an excitation source of the optical multichannel analyzer (OMA) as a detector system and of the transient digitizer (TD) as a data collector and analyzer.The Excimer Laser, in addition to serving as an excitation source, may also induce novel photophysical and/or photochemical events as a result of the unusually high intensities produced by such devices.Examples are given of the use of Excimer Laser-OMA and Excimer Laser-TD systems to study the dynamics of radical pairs that are caged in micelle aggregates and to study novel emissions produced by photoexcitation of benzophenone and substituted benzophenones.