Higher-order triplet interaction in energy-level modeling of excited-state absorption for an expanded porphyrin cadmium complex
Abstract
Recent measurements of transmission versus fluence for a methanol-solvated asymmetric pentaazadentate porphyrin-like (APPC) cadmium complex, [(C6H4-APPC)Cd]Cl, showed the limitations of current energy-level models in predicting the transmission behavior of organic reverse saturable absorbers at fluences greater than 1 J/cm². A new model has been developed that incorporates higher-order triplet processes and accurately fits both nanosecond and picosecond transmission-versus-fluence data. This model has provided the first known determination of a higher triplet excited-state absorption cross section and lifetime for an APPC complex and also described a previously unreported feature in the transmission-versus-fluence data. The intersystem crossing rate and the previously neglected higher triplet excited-state absorption cross section are shown to govern the excited-state population dynamics of methanol-solvated [(C6H4-APPC)Cd]Cl most strongly at more-practical device energies.
Additional Information
© 2005 Optical Society of America. Received February 20, 2004; revised manuscript received August 11, 2004; accepted October 25, 2004. The authors acknowledge support under U.S. Army Research Office grant DAAD19-99-1-0119 and National Science Foundation MultiUser Instrumentation grant DBI-0070220. The authors also acknowledge the contributions that Amy Van Engen Spivey has made to the content and editing of this manuscript.Attached Files
Published - MCKjosab05.pdf
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Additional details
- Eprint ID
- 12572
- Resolver ID
- CaltechAUTHORS:MCKjosab05
- DAAD19-99-1-0119
- Army Research Office
- DBI-0070220
- National Science Foundation
- Created
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2008-12-12Created from EPrint's datestamp field
- Updated
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2019-10-03Created from EPrint's last_modified field