Adam, W. and Hafner, A. and Nikolaus, A. and Sauer, Jürgen and Schneider, F. W. (1998) Structural effects on the photopersistence of ester- and phenyl-substituted DBO-type polycyclic azoalkanes with cyclopropyl and norbornyl annelation. JOURNAL OF INFORMATION RECORDING, 24 (3-4). pp. 185-190. ISSN 1025-6008
Full text not available from this repository.Abstract
The photophysical data for the polycyclic derivatives 1-7 of the photoreluctant diazabicyclo[2.2.2]oct-2-ene(DBO) has been determined. The data indicate that the photoreactivity (Phi(r)) does not depend on the endo-fused ring structures, whereas the fluorescence properties vary significantly with such structural changes. Especially endo-hydrogen atoms of the fused cyclopropyl ring lower both the fluorescence quantum yields (Phi(f)) and the fluorescence halflives (tau(1/2)). The high photoreactivity of azoalkanes with alpha-substituted phenyl groups is significantly lowered by steric interactions in these annelated derivatives due to the higher rotational energy barriers to achieve the optimal planar radical-stabilizing conformation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RELUCTANT AZOALKANES; 2,3-DIAZABICYCLO<2.2.2>OCT-2-ENE; DECOMPOSITION |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Mar 2023 09:11 |
| Last Modified: | 01 Mar 2023 09:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/50244 |
Actions (login required)
 |
View Item |
