Volume 7, Issue 4, July 2019, Page: 76-82
Extraction of Pure-electronic Transition Frequency and Chromophor Polymorphism from Diffuse Vibronic Spectra
Vitaly Antonovich Tolkachev, Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus
Alexander Pavlovich Blokhin, Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus
Received: Jul. 19, 2019;       Accepted: Sep. 6, 2019;       Published: Sep. 21, 2019
DOI: 10.11648/j.sjac.20190704.11      View  65      Downloads  16
Abstract
Background: The adiabatic approach and thermal population of starting state sublevels in vibronic transition at non degenerate combining states of molecular chromophores open ways to calculate pure-electronic transition frequency (combining states gap) individually from diffuse absorption or emission spectra. Results: Experimental data and the theory show, that the model fits to homogene chromophores at room and not low temperatures to escape degeneration and inhomogeneity. Side result of the approach is possibility to view inhomogeneity of chromophores or solvent site inhomogeneity. Conclusions: The approach is applied to vibronic spectra of molecular systems: molecules in different aggregate states, molecular crystals, color and F-centers, films and quantum dots. The trouble with the procedure is using wings of spectra, where the errors can be introduced by overlapping of impurities spectra and even by measurement inaccuracy.
Keywords
Diffuse Vibronic Spectrum, Pure-electronic Transition, Zero-Phonon Frequency, Chromophore Homogeneity, Quantum Dots Homogeneity, Molecular Crystals, F-centers and Color Centers
To cite this article
Vitaly Antonovich Tolkachev, Alexander Pavlovich Blokhin, Extraction of Pure-electronic Transition Frequency and Chromophor Polymorphism from Diffuse Vibronic Spectra, Science Journal of Analytical Chemistry. Vol. 7, No. 4, 2019, pp. 76-82. doi: 10.11648/j.sjac.20190704.11
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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