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(physical chemistry)
The use of radiant energy to produce chemical changes.



the decomposition of molecules that occurs when the molecules absorb light. The decomposition products may be molecules with a smaller number of atoms, free radicals or atoms, or positive and negative ions. If the products are free radicals or atoms, the process is called photodissociation. If the products are positive and negative ions, the process is known as photoionization.

References in periodicals archive ?
A similar adhesion enhancement was also observed for samples photolysed under nitrogen, with a peak in adhesive force occurring near the sample surface, where the photoproduct concentration was a maximum.
2], which is one of the few gases which can be photolysed by the solar radiation which penetrates into the troposphere:
The other oxidation product, R'O, is generally a carbonyl which can also be photolysed by sunlight.