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Photoluminescence of Ag(I) complexes with square-planar coordination geometry: the first observation

Abstract

The first observation of luminescence from Ag(I) complexes with square-planar geometry of the metal is reported. [Ag(Py3PO)2]ClO4 and [Ag(Py3PO)2]OTf – first examples of the emissive square-planar Ag(I) complexes – have been synthesized by reaction of tris(2-pyridyl)phosphine oxide (Py3PO) with the Ag(I) salts. Both complexes exhibit pronounced photoluminescence in the solid state at ambient temperature with nano- and microsecond lifetime components. Remarkably, the luminescence of the complexes has a reversible thermochromic behavior, changing their emission color from yellow (λ □(em¦max) ~ 585 nm) at room temperature to red-orange (λ □(em¦max) = 620 nm) at 77 K. The spectroscopic and computational results reveal that emission of title compounds can be assigned to the 3MLCT phosphorescence with admixture of the 1MLCT fluorescence.

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Publication details

The article was received on 04 Jun 2019, accepted on 14 Aug 2019 and first published on 15 Aug 2019


Article type: Research Article
DOI: 10.1039/C9QI00657E
Inorg. Chem. Front., 2019, Accepted Manuscript

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    Photoluminescence of Ag(I) complexes with square-planar coordination geometry: the first observation

    A. Artem'ev, M. R. Ryzhikov, A. S. Berezin, I. Kolesnikov, D. G. Samsonenko and I. Yu. Bagryanskaya, Inorg. Chem. Front., 2019, Accepted Manuscript , DOI: 10.1039/C9QI00657E

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