Kinetic-Model-Free Analysis of Transient Absorption Spectra Enabled by 2D Correlation Analysis
Hniopek J, Müller C, Bocklitz TW, Schmitt M, Dietzek-Ivanšić B, Popp J (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 12
Pages Range: 4148-4153
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.
Authors with CRIS profile
Involved external institutions
Germany (DE)How to cite
APA:
Hniopek, J., Müller, C., Bocklitz, T.W., Schmitt, M., Dietzek-Ivanšić, B., & Popp, J. (2021). Kinetic-Model-Free Analysis of Transient Absorption Spectra Enabled by 2D Correlation Analysis. Journal of Physical Chemistry Letters, 12, 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 (2021): 4148-4153.
BibTeX: Download