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A systematic study of the optical properties of mononuclear hybrid organo-inorganic lanthanoid complexes

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A systematic study of the optical properties of mononuclear hybrid organo-inorganic lanthanoid complexes

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dc.contributor.author	Zapata-Lizama, Matías
dc.contributor.author	Hermosilla-Ibáñez, Patricio
dc.contributor.author	Venegas-Yazigi, Diego
dc.contributor.author	Mínguez Espallargas, Guillermo
dc.contributor.author	Queiroz Maia, Lauro J.
dc.contributor.author	Gasparotto, Gisane
dc.contributor.author	Costa de Santana, Ricardo
dc.contributor.author	Cañon-Mancisidor, Walter
dc.date.accessioned	2021-07-14T13:58:42Z
dc.date.available	2021-07-14T13:58:42Z
dc.date.issued	2020
dc.identifier.citation	Zapata-Lizama, Matías Hermosilla-Ibáñez, Patricio Venegas-Yazigi, Diego Mínguez Espallargas, Guillermo Queiroz Maia, Lauro J. Gasparotto, Gisane Costa de Santana, Ricardo Cañon-Mancisidor, Walter 2020 A systematic study of the optical properties of mononuclear hybrid organo-inorganic lanthanoid complexes Inorganic Chemistry Frontiers 7 3049 3062
dc.identifier.uri	https://hdl.handle.net/10550/79932
dc.description.abstract	A series of hybrid organo-inorganic mononuclear lanthanoid complexes, [n-NBu4]3[LnH(PW11O39)(phen)2]·H2O, denoted as LM4-1-Ln (Ln = DyIII, TbIII, EuIII, NdIII, ErIII, HoIII and GdIII), were synthesized via hydrothermal synthesis and were structurally characterized by X-ray diffraction. The optical properties of all complexes have been investigated in the solid state. The temperature-dependent emission spectra of LM4-1-Dy, LM4-1-Tb and LM4-1-Eu complexes show intense lanthanoid emissions in the visible region, while LM4-1-Nd shows near-infrared (NIR) luminescence. The EuIII complex shows typical strong red emissions from the 5D0 → 7F0,1,2,3,4 transitions, with the CIE colour coordinates (0.631,0.364), the colour purity value of 83.9% and a quantum yield of up to 4.3%, suggesting that the organic fragment has an effect on the optical properties compared to fully inorganic systems, making this complex very attractive as a red component of light-emitting diodes. The luminescence decays of LM4-1-Dy, LM4-1-Tb and LM4-1-Eu exhibit a biexponential behaviour, with τAV = 4.1(7) μs, 0.35(2) ms and 0.94(3) ms, respectively. The values obtained for Judd-Ofelt intensity parameters Ω2 and Ω4 support the interaction between the EuIII and the ligands. Furthermore, those with ErIII and HoIII present weak emissions in the visible region. The T-dependent photoluminescence results show that the LM4-1-Dy, LM4-1-Tb and LM4-1-Nd complexes have good temperature sensitivity, demonstrating that the materials have the potential to be used as a sensing element for luminescent thermometers in different temperature ranges.
dc.language.iso	eng
dc.relation.ispartof	Inorganic Chemistry Frontiers, 2020, vol. 7, p. 3049-3062
dc.subject	Química
dc.title	A systematic study of the optical properties of mononuclear hybrid organo-inorganic lanthanoid complexes
dc.type	journal article	es_ES
dc.date.updated	2021-07-14T13:58:42Z
dc.identifier.doi	10.1039/D0QI00232A
dc.identifier.idgrec	141715
dc.rights.accessRights	open access	es_ES