Investigation of Transient State and Dynamics of Photochemical Transformations of Chromone Molecules

Autor:	A. N. Sergeev, K. Oberhofer, S. V. Gagarskiy, Hristo Iglev, V. V. Kiyko, E. P. Grebennikov, K. S. Levchenko, Ya. Yu. Fomicheva
Rok vydání:	2018
Předmět:	Materials science Absorption spectroscopy Relaxation (NMR) 02 engineering and technology Nanosecond 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Picosecond Chromone Femtosecond Molecule 0210 nano-technology Spectroscopy
Zdroj:	Optics and Spectroscopy. 125:482-486
ISSN:	1562-6911 0030-400X
Popis:	Results of investigation of the phototransformation dynamics of chromone molecules by means of a transient-state spectroscopy are presented. Changes in the spectrum of the optical density of chromone compounds dissolved in toluene in the process of their phototransformation are obtained on a time scale ranging from several hundred femtoseconds to several hundred picoseconds. Relaxation of an induced absorption spectrum is described by a biexponential function with characteristic time constants on the order of several picoseconds and several nanoseconds. A scheme of the phototransformation dynamics of chromone molecules corresponding to the observed dynamics of absorption spectra is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::018e0021d1aaa22ea0d6e0304cb160f2 https://doi.org/10.1134/s0030400x18100089 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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