The mechanism of fluorescence quenching of anthracene by dimethylmercury, tetramethyllead end tetramethyltin has been examined by fluorescence and flash photolysis measurements. The increased rates OF SI -T, and TI -S6 Intersystem-crossings induced by the heavy-atom molecules are discussed
The quenching of anthracene triplets by ground-state anthracene
β Scribed by Jack Saltiel; Gary R. Marchand; Reza Dabestani; Jeanne M. Pecha
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 357 KB
- Volume
- 100
- Category
- Article
- ISSN
- 0009-2614
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π SIMILAR VOLUMES
The rate constant for the quenching of triplet anthracene by molecular oxygen in the presence or absence of polystyrene was measured. The quenching ability is not affected by the presence of polymer.
The lowest triplet state infrared spectrum of matrix-isolated anthracene between 1650 and 550 cm-' is reported. The seven triplet state bands were tentatively assigned based on frequency proximity to ground state absorptions and comparisons with triplet state features in similar molecules.
## In the electron trancfer bctwcen the catlon ralcals Ah D+or A MD+of the amme moiety of four mtramolecular anthracene-anune systems and the amon ralcals B-of some heterocychc and carbonyl compounds In acetomtrde/toluene, the tnplet state of the anthraccne moiety 3A h D or 3AMD IS formed As mterm
## Abstract Sensitization of neat __cis__ or __trans__ 1,3βpentadienes by triplet benzophenone leads only to isomerization and dimerization. The quantum yields measured for these processes as well as the photostationary composition are strikingly different from the figures obtained in dilute soluti