Luminescent Au(III)–M(I) (M = Cu, Ag) Aggregates Based on Dicyclometalated Bis(alkynyl) Gold Anions

Authors:
Open Access
Publisher website
Google Scholar
Abstract
The syntheses and structures of a series of complexes based on the (CC)-C-?-chelated Au(III) unit ((CC)-C-? = 4,4'-bis(t-butyl) 2,2'-biphenyl-1,1'-diyl) are reported, namely, [{((CC)-C-?)Au(C=(CBu)-Bu-t)(2)}(2)M-2], ((CC)-C-?)Au(C=CR)(C=NXyl), and [{((CC)-C-?)Au(C=CR)(2)}{M(C=NXyl)}] (M = Ag, Cu; R = Bu-t, (C6H4Bu)-Bu-t-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). The complexes are bright photoemitters in the solid state and in poly(methyl methacrylate) (PMMA) films. The photoluminescence is dominated by (IL)-I-3((CC)-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.
Funding Information
  • European Commission
  • Ministerio de Ciencia e Innovación (PID2019-109742GB-I00, RYC2021-034075-I)
  • H2020 Marie Sklodowska-Curie Actions
  • H2020 European Research Council (338944)

This publication has 49 references indexed in Scilit: