Abstract
Enthalpy and volume changes of irreversible chemical reactions were properties that were difficult to access by use of traditional thermodynamical techniques. However, recent developments of several types of spectroscopic methods enable us to measure these quantities for a variety of irreversible reactions. The principles of three experimental methods, specifically, the photoacoustic (PA), transient grating (TG) and transient lens (TrL) methods are explained, and their characteristic points are compared in detail. Enthalpy and volume changes associated with various photochemical reactions (photodissociation reactions, photoisomerization reactions, photoinduced proton-releasing reactions, electron transfer processes) and creation of the excited states of organic molecules in solution phase are reviewed, and these properties are discussed.
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Schedule a callMore From: Journal of Photochemistry and Photobiology C: Photochemistry Reviews
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