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10.1021/acs.inorgchem.1c00410
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Campo DC | Valor | Lengua/Idioma |
---|---|---|
dc.contributor.author | Vivancos, Ángela | - |
dc.contributor.author | Jiménez García, Adrián | - |
dc.contributor.author | Bautista, Delia | - |
dc.contributor.author | González Herrero, Pablo | - |
dc.contributor.other | Facultad de Química | es |
dc.contributor.other | Departamento de Química Inorgánica | es |
dc.date.accessioned | 2024-01-30T12:50:38Z | - |
dc.date.available | 2024-01-30T12:50:38Z | - |
dc.date.issued | 2021-02-09 | - |
dc.identifier.uri | http://hdl.handle.net/10201/138158 | - |
dc.description | ©2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ This document is the Accepted, version of a Published Work that appeared in final form in Inorganic Chemistry. To access the final edited and published work see https://doi.org/10.1021/acs.inorgchem.1c00410 | - |
dc.description.abstract | The synthesis, electrochemistry, and photophysical properties of a series of bis-cyclometalated Pt(IV) complexes that combine the mesoionic aryl-NHC ligand 4-butyl-3-methyl-1-phenyl-1H-1,2,3-triazol-5-ylidene (trz) with either 1-phenylpyrazole or 2-arylpyridine (C∧N) are reported. The complexes (OC-6-54)-[PtCl2(C∧N)(trz)] bearing cyclometalating 2-arylpyridines present phosphorescent emissions in the blue to yellow color range, which essentially arise from 3LC(C∧N) states, and reach quantum yields of ca. 0.3 in fluid solutions and almost unity in poly(methyl methacrylate) (PMMA) matrices at 298 K, thus representing a class of strong emitters with tunable properties. A systematic comparison with the homologous C2-symmetrical species (OC-6-33)-[PtCl2(C∧N)2], which contains two equal 2-arylpyridine ligands, shows that the introduction of a trz ligand leads to significantly lower nonradiative decay rates and higher quantum efficiencies. Computational calculations substantiate the effect of the carbene ligand, which raises the energy of dσ* orbitals in these derivatives and results in the higher energies of nonemissive deactivating 3LMCT states. In contrast, the isomers (OC-6-42)-[PtCl2(C∧N)(trz)] are not luminescent because they present a 3LMCT state as the lowest triplet. | es |
dc.format | application/pdf | es |
dc.format.extent | 14 | es |
dc.language | eng | es |
dc.relation | MCIN/AEI/10.13039/501100011033 and “ERDF A way of making Europe,” proyecto PGC2018-100719−B-I00. Fundación Séneca-Agencia de Ciencia y Tecnología de la Región de Murcia, contrato 20398/SF/17 y proyecto 19890/GERM/15. | es |
dc.rights | info:eu-repo/semantics/openAccess | es |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Platino | es |
dc.subject | Luminiscencia | - |
dc.subject | Complejos ciclometalados | - |
dc.subject.other | CDU::5 - Ciencias puras y naturales::54 - Química::546 - Química inorgánica | es |
dc.title | Strongly Luminescent Pt(IV) Complexes with a Mesoionic N-Heterocyclic Carbene Ligand: Tuning Their Photophysical Properties. | es |
dc.type | info:eu-repo/semantics/article | es |
dc.identifier.doi | 10.1021/acs.inorgchem.1c00410 | - |
Aparece en las colecciones: | Artículos: Química Inorgánica |
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