photodissociation

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photodissociation

[¦fōd·ō·di‚sō·shē′ā·shən]
(physical chemistry)
The removal of one or more atoms from a molecule by the absorption of a quantum of electromagnetic energy.
References in periodicals archive ?
The second objective of the present study was to determine whether the inhibitory effects of one of these poisons (demecolcine) on microtubules and ooplasmic segregation could be reversed by illuminating the eggs with ultraviolet light (360 nm), which photolyzes demecolcine, converting it to lumidemecolcine, a molecule that is not a microtubule poison (Aronson and Inoue, 1970).
Radiation in the Ultra Violet B (290-315 nm) portion of the solar spectrum, photolyzes 7-dehydrocholesterol in the skin to previtamin D3, which is later converted to vitamin D3.
Molecular chlorine photolyzes as the sun rises in spring, and this chlorine (combined with bromine) causes catalytic ozone loss.