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Excited State and Transient Chemistry of a Perylene Derivative (DBP). An Untold Story

Chakkamalayath, Jishnudas and Szabó, Gábor and DuBose, Jeffrey T. and Kamat, Prashant V. (2023) Excited State and Transient Chemistry of a Perylene Derivative (DBP). An Untold Story. Journal of Physical Chemistry A, 127 (1). pp. 99-106. ISSN 1089-5639. doi:10.1021/acs.jpca.2c06904.

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Transient chemistry of sensitizing dyes is important to obtain insights into the photochemical conversion processes of light harvesting assemblies. We have now employed transient absorption spectroscopy (pulsed laser and pulse radiolysis) to characterize the excited state and radical intermediates of a perylene derivative, (5,10,15,20-Tetraphenylbisbenz[5,6]indeno[1,2,3-cd:1′,2′,3′-lm]perylene (DBP). The distinguishable transient absorption features for the singlet and triplet excited states and radical anion and radical cation provide spectral fingerprints to identify the reaction intermediates in photochemical energy and electron transfer processes of composite systems involving DBP. For example, identifying these transients in the energy transfer processes of the rubrene–DBP system would aid in establishing their role as annihilator-emitter for triplet–triplet annihilation up-conversion (TTA-UC). The transient characterization thus serves as an important mechanistic fingerprint for elucidating mechanistic details of systems employing DBP in optoelectronic applications.

Item Type:Article
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URLURL TypeDescription
Chakkamalayath, Jishnudas0000-0003-2529-8424
DuBose, Jeffrey T.0000-0002-7708-4703
Kamat, Prashant V.0000-0002-2465-6819
Additional Information:The authors would like to thank Dr. Dave Bartels and Dr. Irek Janik of the Notre Dame Radiation Laboratory for their help in using pulse radiolysis, and for their work in setting up the Multi Acquire detection system. J.C. acknowledges fellowship support from the Forgash Fellowship for Solar Energy Research (ND Energy). The research described herein is supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy (Award DE-FC02-04ER15533). The authors also acknowledge the University of Notre Dame Equipment Restoration and Renewal (ERR) program for the purchase of the Spectra Physics laser used for the transient absorption measurements. This is contribution NDRL No. 5378 from the Notre Dame Radiation Laboratory.
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University of Notre DameUNSPECIFIED
Department of Energy (DOE)DE-FC02- 04ER15533
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Record Number:CaltechAUTHORS:20221130-646241700.14
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ID Code:118184
Deposited By: Research Services Depository
Deposited On:23 Dec 2022 18:59
Last Modified:25 Jan 2023 23:30

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