Kinetic-model-free analysis of transient absorption spectra enabled by 2D correlation analysis
Hniopek J, Mueller C, Bocklitz T, Schmitt M, Dietzek B, Popp J (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 12
Pages Range: 4148-4153
Journal Issue: 17
DOI: 10.1021/acs.jpclett.1c00835
Abstract
Here, we present, to the best of our knowledge for the first time, a systematic study of utilizing 2D correlation analysis in the field of femtosecond transient absorption (fs-TA) spectroscopy. We present that the application of 2D correlation spectroscopy (2DCOS) to fs-TA spectroscopy enables a model-free means to analyze excited state kinetics, which is demonstrated on the model system [(tbbpy)2Ru(dppz)]2+ in different solvents. We show that TA-2DCOS is able to determine the number of processes contributing to the time-resolved spectral changes in fs-TA data sets, as well as extract the spectral response of these components. Overall, the results show that TA-2DCOS leads to the same results as obtained with methods relying on global lifetime analysis or multivariate curve resolution but without the need to specify a predetermined kinetic model. The work presented therefore highlights the potential of TA-2DCOS as a model-free approach for analyzing fs-TA spectral data sets.
Involved external institutions
Leibniz-Institut für Photonische Technologien e.V.
Germany (DE)
Friedrich-Schiller-Universität Jena
Germany (DE)
Germany (DE)
Friedrich-Schiller-Universität Jena
Germany (DE)
How to cite
APA:
Hniopek, J., Mueller, C., Bocklitz, T., Schmitt, M., Dietzek, B., & Popp, J. (2021). Kinetic-model-free analysis of transient absorption spectra enabled by 2D correlation analysis. Journal of Physical Chemistry Letters, 12(17), 4148-4153. https://doi.org/10.1021/acs.jpclett.1c00835
MLA:
Hniopek, Julian, et al. "Kinetic-model-free analysis of transient absorption spectra enabled by 2D correlation analysis." Journal of Physical Chemistry Letters 12.17 (2021): 4148-4153.
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