Unusually Fast Phosphorescence from Ir(III) Complexes via Dinuclear Molecular Design

Abstract

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Cytotoxic Activities of Bis‐cyclometalated Rhodium(III) and Iridium(III) Complexes Containing 2,2’‐Biphenyldiamine

“…However, the decay time of the Rh complex 1 amounting to 130 μs is significantly longer than that of Ir complex to 2 due to different spin-orbit coupling constants of the two metals and differences in spin-orbit interactions of T 1 with higher singlet MLCT states. [10] The origin of the electronic transitions of 1 and 2 was investigated by quantum chemical computations. Contour plots of selected molecular orbitals and orbital composition of the lowest-energy excited states are shown in Figure 4 and Table 2.…”

Blue Emissive fac/mer‐Iridium (III) NHC Carbene Complexes and their Application in OLEDs

“…[2] Cyclometalated iridium(III) complexes have emerged as one of the most promising triplet emitters because of their versatile color tunability, chemical stability, good thermal properties, and high photoluminescent quantum yields (Φ PL ). [3][4][5][6][7] These phosphors often involve an octahedral Ir 3+ ion with bidentate ligands, C^N:, comprised of a covalently bonded aryl moiety and a datively bonded nitrogen group, such as pyridyl, to give a tris-cyclometalated complex, Ir(C^N:) 3 . While efficient OLEDs using red and green Ir-based phosphorescent emitters are commercially viable, [8][9][10] the stability of OLEDs using blue-emitting transition metal containing complexes are presently insufficient for practical applications.…”

Mono and dinuclear iridium(iii) complexes featuring bis-tridentate coordination and Schiff-base bridging ligands: the beneficial effect of a second metal ion on luminescence

“…28 Thus, the good performance of the dinuclear complexes in terms of k r and hence Φ lum is likely to be a consequence, at least in part, of the high oscillator strength of the lowest spinallowed transition. 30…”