## Lβ’mol -1 β’s -1 in benzene. The bimolecular rate constants of energy transfer from triplet excited 2-acetonaphthone to carotenoids were determined from the linear regression of the decay rate constant of 2-acetonaphthone triplet at varying carotenoid concentrations. The triplet lifetimes of 3 AS
Dipole moments and polarizabilities of triplet-triplet transitions of anthracene in different solvents studied by flash photolysis
β Scribed by J.I. del Barrio; J.R. Rebato; F.M.G. Tablas
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 309 KB
- Volume
- 114
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Transient absorption spectra (trIplet-trlpltt) of anthracene are observed in the vapor phase, poIar and non-polar solvents, aad polymethylmethacrylate matrlces at room temperatire. The results are compared with those of previous observations (smglet-stnglet), after estimating the change m poIarIzabiIity_ When the width of the bands studied :s plotted versus the vrscodty and the drpole moments or' the solvents used, suaight hnes are obtamed.
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.
It is found by nanosecond laser flash photolysis at 355 nm that triplet energy transfer from triplet benzophenone ('BP\*) to N,Ndimethylaminonaphthalene (RNMe,) occurs to yield triplet RNMe, with an efftciency of 0.58 in acetonitrile ( ACN) whereas electron transfer from RNMea to 3BP\* takes place t
It is found that the triplet-triplet energy transfer (ET) reaction between triplet benzophenone ('BP\*) and l-naphthol (ROH) is competitive with the hydrogen atom abstraction (HA) reaction. The rate constant of ET is enhanced with an increase of solvent polarity while that of HA is reduced. A possib