Solvent-cage effect (viscosity dependence) as a diagnostic probe for the mechanism of the intramolecular chemically initiated electron-exchange luminescence (CIEEL) triggered from a spiroadamantyl-substituted dioxetane

Authors
Adam, W Bronstein, I Trofimov, AV Vasil'ev, RF
Citation
W. Adam et al., Solvent-cage effect (viscosity dependence) as a diagnostic probe for the mechanism of the intramolecular chemically initiated electron-exchange luminescence (CIEEL) triggered from a spiroadamantyl-substituted dioxetane, J AM CHEM S, 121(5), 1999, pp. 958-961
Citations number
34
Categorie Soggetti
Chemistry & Analysis",Chemistry
Journal title
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN journal
00027863 → ACNP
Volume
121
Issue
5
Year of publication
1999
Pages
958 - 961
Database
ISI
SICI code
0002-7863(19990210)121:5<958:SE(DAA>2.0.ZU;2-W
Abstract
The excitation step of the intramolecular CIEEL generation in the triggered cleavage of spiroadamantyl-substituted dioxetane has been studied. The ele ctron back-transfer (BET) process versus the direct chemiexcitation of the phenolate-anion emitter have been considered as mechanistic alternatives. T he observed solvent-cage effect on the CIEEL generation, manifested by the increase of the singlet chemiexcitation yield at increased viscosity, provi des evidence that the BET process operates in the intramolecular CIEEL mech anism.