Charge-transfer interactions in the intramolecular quenching of carbonyl triplets by β-aryl substituents
- 1 January 1993
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 12,p. 988-990
- https://doi.org/10.1039/c39930000988
Abstract
The triplet decay rates of ten β-aryl-4-methoxypropiophenone derivatives in methanol, acetonitrile, toluene and isooctane solution at 21 °C correlate with δ+ substituent constants (p+ –1.8 ± 0.2), indicating that charge-transfer exciplex interactions between the aryl group (donor) and the carbonyl group (acceptor) play a dominant role in the intramolecular β-aryl quenching of carbonyl n,πtriplets.Keywords
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