Počet záznamů: 1
Detection of Sugars via Chirality Induced in Europium(III) Compounds
- 1.
SYSNO ASEP 0463989 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Detection of Sugars via Chirality Induced in Europium(III) Compounds Tvůrce(i) Wu, Tao (UOCHB-X) ORCID
Průša, Jiří (UOCHB-X)
Kessler, Jiří (UOCHB-X) RID, ORCID
Dračínský, Martin (UOCHB-X) RID, ORCID
Valenta, J. (CZ)
Bouř, Petr (UOCHB-X) RID, ORCIDZdroj.dok. Analytical Chemistry. - : American Chemical Society - ISSN 0003-2700
Roč. 88, č. 17 (2016), s. 8878-8885Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Raman optical activity ; molecular dynamics simulations ; D-3 lanthanide(III) complexes Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GA16-05935S GA ČR - Grantová agentura ČR GJ16-08764Y GA ČR - Grantová agentura ČR GA15-11223S GA ČR - Grantová agentura ČR GA15-09072S GA ČR - Grantová agentura ČR Institucionální podpora UOCHB-X - RVO:61388963 UT WOS 000382805900074 EID SCOPUS 84986003626 DOI 10.1021/acs.analchem.6b02505 Anotace Detection and resolution of simple monosaccharides are difficult tasks because their structure is quite similar. The present study shows that circularly polarized luminescence (CPL) induced in europium complexes provides very specific spectral patterns for fructose, mannose, glucose, and galactose. Differences were also observed between bare Eu3+ ion and its complexes, when interacting with these sugars. The CPL spectra were measured on a Raman optical activity (ROA) spectrometer, which ensured high fluorescence intensity owing to the strong 532 nm laser excitation. The induced fluorescence was recorded in the same spectrum as the vibrational Raman bands. On the basis of the ligand field theory, most fluorescence spectral peaks could be assigned to f-shell europium transitions. Additional information on the interaction of the lanthanide with the sugar component was provided by measurement of time-dependent fluorescence, as formation of different complexes led to variations in fluorescence decay times. In nuclear magnetic resonance (NMR), the paramagnetic metal ion interacting with the sugars caused specific changes in C-13 chemical shifts. The spectroscopic data and molecular dynamics modeling showed that the interaction between the monosaccharides and Eu ion is rather weak due to the competition of the OH sugar groups with water molecules. However, multiple binding modes are possible, which contributes to the complexity and specificity of the spectra. The induced chirality and fluorescence spectra thus appear to be convenient means for monosaccharide detection and identification. Pracoviště Ústav organické chemie a biochemie Kontakt asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Rok sběru 2017
Počet záznamů: 1