Heteroatom Role in the Formation of Spectral-Luminescent Properties of 21-Thia- and 21,23-Dithia-5,10,15,20-Tetraphenylporphyrin in Solutions

Heteroatom Role in the Formation of Spectral-Luminescent Properties of 21-Thia- and 21,23-Dithia-5,10,15,20-Tetraphenylporphyrin in Solutions

The spectral and luminescent properties of 21-thia- and 21,23-dithia-5,10,15,20-tetraphenylporphyrin were studied in solutions at 293 K. The origin of the spectral shifts of the absorption bands upon heterosubstitution was discussed based on the Gouterman four-orbital model. Fluorescence quenching o...

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Veröffentlicht in:Journal of applied spectroscopy 2020-05, Vol.87 (2), p.201-207
Hauptverfasser: Vershilovskaya, I. V., Liulkovich, L. S., Pukhovskaya, S. G., Ivanova, Yu. B., Plotnikova, A. O., Kruk, M. M.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption spectra
Analytical Chemistry
Atomic/Molecular Structure and Spectra
Fluorescence
Optical properties
Physics
Physics and Astronomy
Porphyrins
Thiophene
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Zusammenfassung:The spectral and luminescent properties of 21-thia- and 21,23-dithia-5,10,15,20-tetraphenylporphyrin were studied in solutions at 293 K. The origin of the spectral shifts of the absorption bands upon heterosubstitution was discussed based on the Gouterman four-orbital model. Fluorescence quenching of the heteroporphyrins was shown to be due to an internal heavy-atom effect of the thiophene-ring heteroatom.
ISSN:0021-9037
1573-8647
DOI:10.1007/s10812-020-00984-6