Luminescent Au(III)−M(I) (M = Cu, Ag) aggregates based on dicyclometalated bis(alkynyl) gold anions

Lara Garnica, Rebeca, Jimenez Rama, Raquel, Chambrier, Isabelle, Agonigi, Gabriele, Hughes, David L., Lalinde, Elena, Bochmann, Manfred ORCID: and Fernandez-Cestau, Julio (2023) Luminescent Au(III)−M(I) (M = Cu, Ag) aggregates based on dicyclometalated bis(alkynyl) gold anions. Inorganic Chemistry, 62 (32). 12683−12696. ISSN 0020-1669

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The syntheses and structures of a series of complexes based on the C^C-chelated Au(III) unit (C^C = 4,4′-bis(t-butyl) 2,2′-biphenyl-1,1′-diyl) are reported, namely [{(C^C)Au(C≡CtBu)2}2M2], (C^C)Au(C≡CR)(C≡NXyl), ) and [{(C^C)Au(C≡CR)2}{M(C≡NXyl)}] (M = Ag, Cu; R = tBu, C6H4tBu-4, C6H4OMe-4; Xyl = 3,5-Me2C6H3). The X-ray structures reveal a broad range of dispositions determined by the different coordination modes of Ag(I) or Cu(I) in the different structures. The complexes are bright photoemitters in the solid state and in poly(methyl methacrylate) (PMMA) films. The photoluminescence is dominated by 3IL(C^C) transitions, with indirect effects from the rest of the molecules, as supported by theoretical calculations. This work opens up the possibility of accessing Au(III) carbon rich anions to construct photoluminescent aggregates.

Item Type: Article
Additional Information: Acknowledgments: This work was supported by the European Research Council (grant no. 338944-GOCAT) and by the Spanish Ministerio de Ciencia e Innovación (Project PID2019-109742GB-I00) M.B. is an ERC Advanced Investigator Award holder. R.J.R. acknowledges the VI PPIT-US for a research fellowship and the Marie Skłodowska-Curie Postdoctoral Fellowships (HORIZON-MSCA-2021-PF). J.F.-C holds a Ramón y Cajal Fellowship (RYC2021-034075-I) and is funded by MCIN/AEI/10.13039/501100011033 and the European Union “NextGenerationEU/PRTR”.
Uncontrolled Keywords: physical and theoretical chemistry,inorganic chemistry ,/dk/atira/pure/subjectarea/asjc/1600/1606
Faculty \ School: Faculty of Science > School of Chemistry
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Depositing User: LivePure Connector
Date Deposited: 04 Sep 2023 09:30
Last Modified: 11 Sep 2023 08:30
DOI: 10.1021/acs.inorgchem.3c00870


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