Quicksilver metal mac#

The τ fl values range between 20 and 85 ns, and the τ ph values are in the 50–200 μs regime. Detailed temperature-dependent photophysical measurements (5–325 K) were carried out to determine the singlet and triplet emission lifetimes (τ fl and τ ph, respectively) and the energy difference between the singlet and triplet excited state, Δ E S1–T1. The compounds have short emission lifetimes (τ = 0.33–2.8 μs) that fall in the order Ag < Au < Cu, with the lifetimes of (carbene)Ag(Cz) roughly a factor of 10 shorter than for (carbene)Cu(Cz) complexes. All six of the (carbene)M(Cz) complexes examined here display high photoluminescence quantum yields of 0.8–1.0. The electrochemical properties and energies for charge transfer (CT) absorption and emission compounds are not significantly affected by the choice of metal ion. The crystal structures of the (carbene)M (I)(N-carbazolyl) (M CAAC) and (MAC)M (I)(N-carbazolyl) (M MAC) complexes show coplanar carbene and carbzole ligands and C–M–N bond angles of ∼180°.

Quicksilver metal mac#

A systematic study is presented on the physical and photophysical properties of isoelectronic and isostructural Cu, Ag, and Au complexes with a common amide (N-carbazolyl) and two different carbene ligands (i.e., CAAC = (5 R,6 S)-2-(2,6-diisopropylphenyl)-6-isopropyl-3,3,9-trimethyl-2-azaspirodecan-2-ylidene, MAC = 1,3-bis(2,6-diisopropylphenyl)-5,5-dimethyl-4-keto-tetrahydropyridylidene).