Archive: 2021 - Moldavian Journal of the Physical Sciences

06 Jul 2021

2021
V. 20
1
(p.73 - 83)

Coordination complex [Eu(μ2-OC2H5)(btfa)(NO3) (phen)]2·phen with high luminescent efficiency

CZU: 535.33:543.4

DOI: https://doi.org/10.53081/mjps.2021.20-1.06

Authors:

Iovu Mihail; Verlan Victor; Culeac Ion; Bordian Olga; Zubareva Vera; Bulhak Ion; Enachescu Marius; Siminel Nikita; Siminel Anatolii

Summary:

Experimental results on the bis[(μ2-etoxi)(benzoyl trifluoroacetonato)(nitrato)(1,10-phenantroline)europium(III)]1,10-phenantroline europium(III) coordination complex (hereafter, [Eu(μ2-OC2H5)(btfa)(NO3)(phen)]2·phen) are described. The complex is characterized by photoluminescence (PL) and infrared spectroscopy. Photoluminescence spectra of the complex exhibit strong emission with specific narrow emission bands associated with the 5D0→7Fj (j = 0–4) transitions. The pattern of emission band splitting and the luminescence time decay suggest the presence of at least two different sites of the Eu3+ ion in a low-symmetry environment. The absolute PL quantum yield of the complex is determined to be 49.2%.

Sunt prezentate rezultate experimentale pentru complexul coordinativ al europiului III) - [Eu(μ2-OC2H5)(btfa)(NO3)(phen)]2phen. Complexul a fost caracterizat prin spectroscopia de fotoluminescență și spectroscopia în infraroșu. Spectrele de fotoluminescență ale complexului reprezintă benzi de emisie puternice asociate cu tranzițiile 5D0→7Fj (j=0-4). Caracterul despicării benzilor de emisie, cât şi timpul de relaxare al luminescenței indică prezența a cel puțin două site-uri diferite ale ionului Eu3+ în mediu cu simetrie redusă. A fost determinat randamentul cuantic absolut al complexului de 49,2%.

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<meta name="citation_author" content="Iovu Mihail">
<meta name="citation_author" content="Verlan Victor">
<meta name="citation_author" content="Culeac Ion">
<meta name="citation_author" content="Bordian Olga">
<meta name="citation_author" content="Zubareva Vera">
<meta name="citation_author" content="Bulhak Ion">
<meta name="citation_author" content="Enachescu Marius">
<meta name="citation_author" content="Siminel Nikita">
<meta name="citation_author" content="Siminel Anatolii">
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Dublin Core

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<oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'>
<dc:creator>Iovu, M.S.</dc:creator>
<dc:creator>Verlan, V.I.</dc:creator>
<dc:creator>Culeac, I.P.</dc:creator>
<dc:creator>Bordian, O.T.</dc:creator>
<dc:creator>Zubareva, V.E.</dc:creator>
<dc:creator>Bulhac, I.I.</dc:creator>
<dc:creator>Enăchescu, M.</dc:creator>
<dc:creator>Siminel, N.A.</dc:creator>
<dc:creator>Siminel, A.V.</dc:creator>
<dc:date>2021-07-06</dc:date>
<dc:description xml:lang='en'><p>Experimental results on the bis[(&mu;2-etoxi)(benzoyl trifluoroacetonato)(nitrato)(1,10-phenantroline)europium(III)]1,10-phenantroline europium(III) coordination complex (hereafter, [Eu(&mu;2-OC2H5)(btfa)(NO3)(phen)]2·phen) are described. The complex is characterized by photoluminescence (PL) and infrared spectroscopy. Photoluminescence spectra of the complex exhibit strong emission with specific narrow emission bands associated with the 5D0&rarr;7Fj (j = 0&ndash;4) transitions. The pattern of emission band splitting and the luminescence time decay suggest the presence of at least two different sites of the Eu3+ ion in a low-symmetry environment. The absolute PL quantum yield of the complex is determined to be 49.2%.</p></dc:description>
<dc:description xml:lang='ro'><p>Sunt prezentate rezultate experimentale pentru complexul coordinativ al europiului III) - [Eu(&mu;2-OC2H5)(btfa)(NO3)(phen)]2phen. Complexul a fost caracterizat prin spectroscopia de fotoluminescență și spectroscopia &icirc;n infraroșu. Spectrele de fotoluminescență ale complexului reprezintă benzi de emisie puternice asociate cu tranzițiile 5D0&rarr;7Fj (j=0-4). Caracterul despicării benzilor de emisie, c&acirc;t şi timpul de relaxare al luminescenței indică prezența a cel puțin două site-uri diferite ale ionului Eu3+ &icirc;n mediu cu simetrie redusă. A fost determinat randamentul cuantic absolut al complexului de 49,2%.</p></dc:description>
<dc:identifier>10.53081/mjps.2021.20-1.06</dc:identifier>
<dc:source>Moldavian Journal of the Physical Sciences 20 (1) 73-83</dc:source>
<dc:subject>rare-earth compounds</dc:subject>
<dc:subject>europium (III) complex</dc:subject>
<dc:subject>Luminescence</dc:subject>
<dc:subject>Quantum yield</dc:subject>
<dc:subject>compuși de pământ rar</dc:subject>
<dc:subject>complex Europium (III)</dc:subject>
<dc:subject>luminescență</dc:subject>
<dc:subject>randament cuantic</dc:subject>
<dc:title><p>Coordination complex [Eu(&mu;2-OC2H5)(btfa)(NO3) (phen)]2·phen  with high luminescent efficiency</p></dc:title>
<dc:type>info:eu-repo/semantics/article</dc:type>
</oai_dc:dc>

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SM ISO690:2012

IOVU, Mihail; VERLAN, Victor; CULEAC, Ion; BORDIAN, Olga; ZUBAREVA, Vera; BULHAK, Ion; ENACHESCU, Marius; SIMINEL, Nikita; SIMINEL, Anatolii. Coordination complex [Eu(μ2-OC2H5)(btfa)(NO3) (phen)]2·phen with high luminescent efficiency. In: Moldavian Journal of the Physical Sciences. 2021, nr. 1(20), pp. 73-83. ISSN 1810-648X.