Pincer-CNC mononuclear, dinuclear and heterodinuclear Au(III) and Pt(II) complexes supported by mono- and poly-N-heterocyclic carbenes: synthesis and photophysical properties
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Pincer-CNC mononuclear, dinuclear and heterodinuclear Au(III) and Pt(II) complexes supported by mono- and poly-N-heterocyclic carbenes: synthesis and photophysical propertiesData de publicació
2016Editor
Royal Society of ChemistryISSN
1477-9226; 1477-9234Cita bibliogràfica
GONELL, S.; POYATOS, M.; PERIS, E. Pincer-CNC mononuclear, dinuclear and heterodinuclear Au (iii) and Pt (ii) complexes supported by mono-and poly-N-heterocyclic carbenes: synthesis and photophysical properties. Dalton Transactions, 2016, vol. 45, no 13, p. 5549-5556Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://pubs.rsc.org/en/content/articlepdf/2016/DT/C6DT00198JParaules clau / Matèries
Resum
A family of cyclometallated Au(III) and Pt(II) complexes containing a CNC-pincer ligand (CNC = 2,6-diphenylpyridine)
supported by pyrene-based mono- or bis-NHC ligands have been synthesized and characterized,
together ... [+]
A family of cyclometallated Au(III) and Pt(II) complexes containing a CNC-pincer ligand (CNC = 2,6-diphenylpyridine)
supported by pyrene-based mono- or bis-NHC ligands have been synthesized and characterized,
together with the preparation of a Pt–Au hetero-dimetallic complex based on a Y-shaped tris-NHC
ligand. The photophysical properties of all the new species and of two related Ru(II)–arene complexes
were studied and compared. Whereas the pyrene-based complexes only exhibit emission in solution,
those containing the Y-shaped tris-NHC ligand are only luminescent when dispersed in poly(methyl
methacrylate) (PMMA). In particular, the pyrene-based complexes were found to be emissive in the range
of 373–440 nm, with quantum yields ranging from 3.1 to 6.3%, and their emission spectra were found to
be almost superimposable, pointing to the fluorescent pyrene-centered nature of the emission. This
observation suggests that the emission properties of the pyrene fragment may be combined with some of
the numerous applications of NHCs as supporting ligands allowing, for instance, the design of biological
luminescent agents. [-]
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© The Royal Society of Chemistry
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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