Determination of gap between optically combining states (0-0- transition) from diffuse vibronic absorption or emission spectra is possible now for homogeneous ensembles of chromophores. If the observed spectra present composite polymorphic chromophores or different species they are formed by partial spectra and differing electronic transitions. For these conditions the indicating pure-electronic transition frequency attribute is distorted, smeared or even absent. That behavior is qualitative indication of the chromophore inhomogeneity. The same would be because of impurities. It is shown that the approach of inhomogeneity qualitative indication by spectra is adaptable to different structural forms of chromophor and at polymorphic sites of containing the chromophore media. The experimental data show that the approach is applicable to see the chromophore inhomogeneity by linear and circular vibronic spectra even of molecular dye-labels. The examples of observed distortions for the spectra of different composite species in different media as manifestation of their inhomogeneity are given. As the region of indication 0-0-transition is situated at low intensity antistokes wings of spectra the sensitivity to inhomogeneity is high as to hindrance by impurities and measurement precision.
Published in | American Journal of Applied Chemistry (Volume 8, Issue 5) |
DOI | 10.11648/j.ajac.20200805.11 |
Page(s) | 121-125 |
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2020. Published by Science Publishing Group |
Optical Spectra, 0-0-Electronic Transition, Inhomogeneity of Chromophores, Spectral Inhomogeneity, Impurities Indication, Molecular Labels Homogeneity
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APA Style
Vitaly Antonovich Tolkachev. (2020). Chromophor Inhomogeneity Indication by Diffuse Vibronic Spectra. American Journal of Applied Chemistry, 8(5), 121-125. https://doi.org/10.11648/j.ajac.20200805.11
ACS Style
Vitaly Antonovich Tolkachev. Chromophor Inhomogeneity Indication by Diffuse Vibronic Spectra. Am. J. Appl. Chem. 2020, 8(5), 121-125. doi: 10.11648/j.ajac.20200805.11
AMA Style
Vitaly Antonovich Tolkachev. Chromophor Inhomogeneity Indication by Diffuse Vibronic Spectra. Am J Appl Chem. 2020;8(5):121-125. doi: 10.11648/j.ajac.20200805.11
@article{10.11648/j.ajac.20200805.11, author = {Vitaly Antonovich Tolkachev}, title = {Chromophor Inhomogeneity Indication by Diffuse Vibronic Spectra}, journal = {American Journal of Applied Chemistry}, volume = {8}, number = {5}, pages = {121-125}, doi = {10.11648/j.ajac.20200805.11}, url = {https://doi.org/10.11648/j.ajac.20200805.11}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20200805.11}, abstract = {Determination of gap between optically combining states (0-0- transition) from diffuse vibronic absorption or emission spectra is possible now for homogeneous ensembles of chromophores. If the observed spectra present composite polymorphic chromophores or different species they are formed by partial spectra and differing electronic transitions. For these conditions the indicating pure-electronic transition frequency attribute is distorted, smeared or even absent. That behavior is qualitative indication of the chromophore inhomogeneity. The same would be because of impurities. It is shown that the approach of inhomogeneity qualitative indication by spectra is adaptable to different structural forms of chromophor and at polymorphic sites of containing the chromophore media. The experimental data show that the approach is applicable to see the chromophore inhomogeneity by linear and circular vibronic spectra even of molecular dye-labels. The examples of observed distortions for the spectra of different composite species in different media as manifestation of their inhomogeneity are given. As the region of indication 0-0-transition is situated at low intensity antistokes wings of spectra the sensitivity to inhomogeneity is high as to hindrance by impurities and measurement precision.}, year = {2020} }
TY - JOUR T1 - Chromophor Inhomogeneity Indication by Diffuse Vibronic Spectra AU - Vitaly Antonovich Tolkachev Y1 - 2020/09/03 PY - 2020 N1 - https://doi.org/10.11648/j.ajac.20200805.11 DO - 10.11648/j.ajac.20200805.11 T2 - American Journal of Applied Chemistry JF - American Journal of Applied Chemistry JO - American Journal of Applied Chemistry SP - 121 EP - 125 PB - Science Publishing Group SN - 2330-8745 UR - https://doi.org/10.11648/j.ajac.20200805.11 AB - Determination of gap between optically combining states (0-0- transition) from diffuse vibronic absorption or emission spectra is possible now for homogeneous ensembles of chromophores. If the observed spectra present composite polymorphic chromophores or different species they are formed by partial spectra and differing electronic transitions. For these conditions the indicating pure-electronic transition frequency attribute is distorted, smeared or even absent. That behavior is qualitative indication of the chromophore inhomogeneity. The same would be because of impurities. It is shown that the approach of inhomogeneity qualitative indication by spectra is adaptable to different structural forms of chromophor and at polymorphic sites of containing the chromophore media. The experimental data show that the approach is applicable to see the chromophore inhomogeneity by linear and circular vibronic spectra even of molecular dye-labels. The examples of observed distortions for the spectra of different composite species in different media as manifestation of their inhomogeneity are given. As the region of indication 0-0-transition is situated at low intensity antistokes wings of spectra the sensitivity to inhomogeneity is high as to hindrance by impurities and measurement precision. VL - 8 IS - 5 ER -