The Mechanism of singlet (1) to triplet (1) Nonradiative Process in Quinoxaline by Zeeman-PMDR Spectroscopy.

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Abstract:

It is demonstrated that the results of the Zeeman effect on the observed phosphorescence spectrum at low temperatures can yield information concerning the mechanism of the singlet 1 to triplet 1 nonradiative process. The results of this as well as the Zeeman-PMDR technique support the direct singlet 1n,pi to triplet 1pi,pi intersystem crossing mechanism for quinoxaline in durene, in spite of the larger energy gap involved as compared with the singlet 1 to triplet 2 to triplet 1 mechanism.

Author(s):
Zinsli, Paul E. ; El-sayed, M. A.
Author Organization(s):
CALIFORNIA UNIV LOS ANGELES DEPT OF CHEMISTRY
Descriptive Note:
Technical rept.,
Pagination:
0019

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-22
Contract/Grant Number(s):
N00014-75-C-0602
Project Number(s):
NR-056-498
 Subject Terms
Communities of Interest:
Materials and Manufacturing Processes
Descriptor(s):
*ELECTRON TRANSITIONS, *PHOSPHORESCENCE, LOW TEMPERATURE, MOLECULAR ORBITALS, NITROGEN HETEROCYCLIC COMPOUNDS, ZEEMAN EFFECT
Field(s)/Group(s):
Atomic and Molecular Physics and Spectroscopy
Keyword(s):
*Intersystem crossing(Electrons), *Phosphorescence microwave double resonance spectroscopy, *Quinoxalines
Report Date:
1975 Jul 11