Synthesis and photophysical properties of Au(III)-Ag(I) aggregates

Fernandez Cestau, Julio, Rama, Raquel, Rocchigiani, Luca, Bertrand, Benoit, Lalinde, Elena, Linnolahti, Mikko and Bochmann, Manfred ORCID: https://orcid.org/0000-0001-7736-5428 (2019) Synthesis and photophysical properties of Au(III)-Ag(I) aggregates. Inorganic Chemistry, 58 (3). 2020–2030. ISSN 0020-1669

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Abstract

Cyclometallated gold (III) complexes of the type (C^N^C)AuX [HC^N^CH = 2,6-bis(4-ButC6H4)pyrazine; 2,6-bis(4-ButC6H4)pyridine, or 2,6-bis(4-ButC6H4)4-Butpyridine; X = CN, CH(COMe)2 or CH(CN)2] have been used as building blocks for the construction of the first family of AuIII/AgI aggregates. The crystal structures of these aggregates reveal the formation of complex architectures in which the Ag+ cations are stabilized by the basic centers present on each of the Au precursors. The photophysical properties of these aggregates are reported. Compared to mononuclear pincer complexes, a general red-shift and an increase in the emission intensity are observed. In agreement with DFT calculations the lowest energy absorption and the emission are assigned to 1IL(C^N^C) and 3IL(C^N^C) transitions dominated by the HOMO and the LUMO orbitals.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Chemistry
UEA Research Groups:	Faculty of Science > Research Groups > Chemistry of Light and Energy Faculty of Science > Research Groups > Chemistry of Materials and Catalysis
Depositing User:	LivePure Connector
Date Deposited:	22 Jan 2019 11:30
Last Modified:	13 May 2023 00:47
URI:	https://ueaeprints.uea.ac.uk/id/eprint/69647
DOI:	10.1021/acs.inorgchem.8b02987

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