New Charge Transfer Luminescent Polymetallic Complexes of Rhodium(III), Iridium(III), and Ruthenium(II) with the Bridging Ligand 1,4,5,8,9,12-Hexaazatriphenylene

Facile Synthesis of Luminescent Ir–Pt–Ir Trimetallic Complexes

“…[30][31][32] Severale xamples of polynuclear cyclometalated iridiumc omplexes have been reported recently, [33][34][35][36][37][38][39] as well as some supramolecular structures where cyclometalated iridium is combinedw ith another photoactive metal complex. [15,[40][41][42][43][44][45][46] Relevant to the presentm anuscript,t here are af ew multimetallicc ompounds [15][16][17] involving cyclometalated iridiump artnered with Pt II bis-acetylide complexes,t he latter being anotherw ell-knownc lass of phosphorescent organometallic complexes. [47][48][49] Consideringt he above examples, there is room for growth in the synthetic chemistry of supramolecular cyclometalated iridiumc omplexes,t ot ake full advantage of the ability to craft compounds with enhanced or uniquep hotophysical attributes.…”

“…They are synthetically versatile, allowing facile tuning of the emission color via modification of the cyclometalating (C^N) and/or ancillary ligand structure . Several examples of polynuclear cyclometalated iridium complexes have been reported recently, as well as some supramolecular structures where cyclometalated iridium is combined with another photoactive metal complex . Relevant to the present manuscript, there are a few multimetallic compounds involving cyclometalated iridium partnered with Pt II bis‐acetylide complexes, the latter being another well‐known class of phosphorescent organometallic complexes …”

Synthesis, Photophysical and Electrochemical Properties, and Biological Labeling Studies of Cyclometalated Iridium(III) Bis(pyridylbenzaldehyde) Complexes: Novel Luminescent Cross‐Linkers for Biomolecules

“…This is supported by the observation of similar excitation spectra, in which the emission is monitored at a variety of wavelengths at the emission bands. The emission lifetimes of complexes 1 – 4 (Table 3) are strictly single‐exponential and are about an order of magnitude longer than those of common cyclometalated iridium( III ) systems [Ir(C–N) 2 (N‐N)] + 7c,7d,7f, 8a,8b,8e–8g,8i, 9a, 10a,10b, 11a, 16, 17, 18a. The independence of the emission energy on the identity of the diimine ligands, together with the observation of structured emission features and relatively long emission lifetimes, suggests that the luminescence of complexes 1 – 4 in fluid solutions is derived from an 3 IL (π→π*) (pba − ) excited state, perhaps with mixing of some 3 MLCT (dπ(Ir)→π*(pba − )) character 11a,11b, 14, 15.…”

Photooxidation of Guanine by a Ruthenium Dipyridophenazine Complex Intercalated in a Double‐Stranded Polynucleotide Monitored Directly by Picosecond Visible and Infrared Transient Absorption Spectroscopy

“…electron transfer · guanine · photooxidation · reaction mechanisms · ruthenium [ guanine either in nucleotides (GMP or dGMP) or in the double-stranded polynucleotides. [25][26][27][28][29][30] With complexes such…”