photodimerization

photodimerization

[¦fōd·ō‚dī·mə·rə′zā·shən]
(physical chemistry)
A bimolecular photochemical process involving an electronically excited unsaturated molecule that undergoes addition with an unexcited molecule of the same species.
References in periodicals archive ?
Part two contains chapters on cyclobutarenes; organometallic derivatives; synthesis and reactivity in the photochemistry of cyclobutanes; photodimerization of crystalline olefins in the solvent-free photosynthesis of cyclobutanes; chemistry of cubane and other prismanes; bicyclo[2.
Work will continue on the synthesis of ligands for use in the production of new porous materials through solid state photodimerization of the vinyl groups.
In a nice twist, chiral, optically pure oxazolines on the periphery of the thiophenes control the self-assembly to give dimers of only one helical chirality, and this helical chirality controls the photodimerization to give essentially only one diastereomer (see opposite).
So the photo-crosslinking is hindered by the surrounding in the aggregation, effective photodimerization cannot be observed.