Photoisomerisation and dimerisation reactions in solution have been studied with a series of alkylated 2-pyridones (1).The low quantum efficiencies for the photoisomerisation (0.01-0.07) are related to the short-lived singlet excited states (below 1 ns).The effects of temperature, solvent, and substrate concentration were also examined.The photodimerisation reactions of (1) are considered to involve preliminary association via strong dipole-dipole interaction rather than hydrogen-bonded pairing.
Matsushima, Ryoka,Terada, Kazuhide
p. 1445 - 1448
(2007/10/02)
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