The fluorescence quantum yield of N,N-dimethyl-1-amino-5-naphthalene-sulfonate in D20 exceeds that iu Ha0 by a factor 1.75. It is assumed that in this and related cnscs solute-solvent interac&m is
Deuterium isotope effect on the fluorescence lifetime of azulene
β Scribed by A.E.W. Knight; B.K. Selinger
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 273 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
The fluorescence lifetime of xuleneda is found to be longer than that of azulenef?e both in frozen scluticn and under collision-free condition in the vapour. The lifetime of the emission of the isolated molecule decreases with higher energy excitation.
π SIMILAR VOLUMES
From a Stern-Volmer kinetic anzJysis of the naphthtiene-T2 sensitized reaction of cndodicyclopcntzdicne Mth benzenc as the intermediate excitalion carrier, it was concluded that deutcrium substitution increases the Tz-lifetime of nzphthalene. An isotope cffcct of 1.4 + 0.3 was observed for perdeutcr
A study of fluorescence quantum yields and fluorescence lifetimes of the cyclic azoalkanes I and II reveals a striking dependence of @P and rF on solvent and on isotopic substitution (OH 4 OD). A mechanism involving specific deactivation of the fluorescent state from a hydrogen bonded complex is pro
Azulene (symmetry C2,) is the only known example of a compound in which the fluorescence transition originates from the second electronically excited singlet state (S2 -SO) rather than from the lowest one (Sl -SO). It is shown that single annelation. lowering of symmetry (from C2\*, to C, or C2). in