Experimental and theoretical spectral properties of ethyl 2-(7-hydroxy-2-oxo-2H-chromen-4-yl)acetate doped sol-gel materials: new materials with potential optical application |
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| Authors: | G. Ahmed B. Koleva S. Gutzov I. Petkov |
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| Affiliation: | (1) Department of Organic Chemistry, Organic Photochemistry Group, University of Sofia “St Kliment Ohridski”, 1, James Bauchier Boulevard, 1164 Sofia, Bulgaria;(2) Department of Analytical Chemistry, University of Sofia “St Kliment Ohridski”, 1, James Bauchier Boulevard, 1164 Sofia, Bulgaria;(3) Department of Physical Chemistry, University of Sofia “St Kliment Ohridski”, 1, James Bauchier Boulevard, 1164 Sofia, Bulgaria |
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| Abstract: | Silica xerogels and monoliths, containing ethyl 2-(7-hydroxy-2-oxo-2H-chromen-4-yl)acetate (K4) or Sm3 + ions and K4 are prepared by sol-gel technique. NMR investigations, UV/Vis, IR- and luminescence spectral properties of K4 in solution and in monoliths are presented. The IR-spectroscopic properties of the prepared sol-gel materials are examined by applying the reduced-difference procedure to non-polarized IR-spectra. The results show that the sol-gel medium did not interact with K4 as well as in the presence of Sm3+ ions the K4 form a [Sm(L)2(H2O)4] × (NO3)3 complex in the matrix. Electronic Supplementary Material The online version of this article (doi:) contains supplementary material, which is available to authorized users. |
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| Keywords: | Coumarin IR- and UV/Vis spectroscopy Luminescence Sm3+-complex Sol-gel |
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