Počet záznamů: 1
Identification of Lanthanide(III) Luminophores in Magnetic Circularly Polarized Luminescence Using Raman Optical Activity Instrumentation
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SYSNO ASEP 0475360 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Identification of Lanthanide(III) Luminophores in Magnetic Circularly Polarized Luminescence Using Raman Optical Activity Instrumentation Tvůrce(i) Wu, Tao (UOCHB-X) ORCID
Kapitán, J. (CZ)
Andrushchenko, Valery (UOCHB-X) RID, ORCID
Bouř, Petr (UOCHB-X) RID, ORCIDZdroj.dok. Analytical Chemistry. - : American Chemical Society - ISSN 0003-2700
Roč. 89, č. 9 (2017), s. 5043-5049Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova rare earth ions ; photophysical properties ; europium(III) complexes Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GJ16-08764Y GA ČR - Grantová agentura ČR GA15-09072S GA ČR - Grantová agentura ČR GA16-05935S GA ČR - Grantová agentura ČR Institucionální podpora UOCHB-X - RVO:61388963 UT WOS 000400723600041 EID SCOPUS 85020395182 DOI 10.1021/acs.analchem.7b00435 Anotace Luminescence of lanthanide(III) ions sensitively reflects atomic environment. However, the signal may be weak and covered by Raman scattering. In the present study magnetic circularly polarized luminescence (MCPL) is explored as a more sensitive tool to recognize the lanthanide signal and assign underlying electronic transitions. MCPL spectra of the Na-3[Ln(DPA)(3)] (Ln = Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, and Er) complexes were recorded on a Raman optical activity (ROA) instrument. The ROA spectrometer equipped with the 532 nm laser excitation sensitively detects differences in scattering of left- and right-circularly polarized light caused by the magnetic field. Weak bands sometimes invisible in unpolarized measurement could be detected as MCPL. Observed transitions were assigned with the aid of the ligand-field theory. MCPL also reflects the environment: chloride and nitrate salts (LnCl(3) and Ln(NO3)(3)) provide a different signal than the complex, for Nd-III the signal responds to distribution of chloride and nitrate ions around the metal. The MCPL technique thus appears useful for identification and assignment of lanthanide transitions and increases the potential of fluorescent probes for applications in analytical chemistry and imaging. 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 2018
Počet záznamů: 1