Bimetallic Cyclometalated Iridium(III) Diastereomers with Non‐Innocent Bridging Ligands for High‐Efficiency Phosphorescent OLEDs

Abstract

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Tetranuclear Iridium Complex with a Self-Host Feature for High-Efficiency Nondoped Phosphorescent Organic Light-Emitting Diodes

“…Moreover, this is the first report on multinuclear complexes that display nondoped device efficiency approaching that of doped ones (Figure S7 and Table 2). 37,38…”

A Small Cationic Organo–Copper Cluster as Thermally Robust Highly Photo- and Electroluminescent Material

“…In this regard, carbo-cyclometalated organometallic complexes of precious metals such as iridium or platinum, play a key role in the preparation of luminescent materials due to their high quantum efficiency and facile emission wavelength tuning. [5][6][7][8][9][10][11][12][13] Currently, there are strong efforts to exchange cost-intensive and scarce precious metals in luminescent materials with economically viable alternatives in order to enable mass-market applications (e.g. large surface lighting and smart-labels).…”

“…The organic light-emitting diode (OLED) technology, now present in a variety of consumer electronics, commercialized in an expanding multibillion dollar market, has the potential to be a highly efficient, energy-economical solid-state lighting system with global economic impact. − Coordination compounds with bright photoluminescence (PL) have attracted increased attention owing to their potential application in optoelectronic devices. In this regard, carbo-cyclometalated organometallic complexes of precious metals, such as iridium or platinum, play a key role in the preparation of luminescent materials due to their high quantum efficiency and facile emission wavelength tuning. − Currently, there are strong efforts to exchange cost-intensive and scarce precious metals in luminescent materials with economically viable alternatives in order to enable mass-market applications (e.g., large surface lighting and smart labels). In this aspect, efficient emitters based on copper­(I) complexes are intensively studied. − The d 10 configuration of Cu­(I) avoids d–d transitions, and hence, a ligand-centered LUMO can participate in metal-to-ligand charge transfer (MLCT) processes.…”

An efficient heterodinuclear Ir(iii)/Pt(ii) complex: synthesis, photophysics and application in light-emitting electrochemical cells

“…With such rich design properties at hand, it is not surprising that multinuclear complexes are gaining popularity as the emitting species in organic light-emitting diodes (OLEDs), 1, [13][14][15][16][17][18][19][20][21] and also have contributed to an impressive device performance. For instance, Zhou and co-workers report on the successful application of Ir and Pt homodinuclear complexes as the emitter in OLEDs that exhibit a very high efficiency, 13,22 while others have demonstrated well-performing OLED devices based on homodinuclear and heterodinuclear complexes that emit with a broad variety of emission colors at high efficiency.…”