Green phosphorescence and electroluminescence of sulfur pentafluoride-functionalized cationic iridium(III) complexes
EZ-C acknowledges the University of St Andrews for financial support. We report four cationic iridium(III) complexes [Ir(C^N)2(dtBubpy)](PF6) that have sulfurpentafluoride-modified 1-phenylpyrazole and 2-phenylpyridine cyclometalating (C^N) ligands (dtBubpy = 4,4'-di-tert-butyl-2,2'-bipyridyl). Three of the complexes were characterized by single-crystal X-ray structure analysis. In cyclic voltammetry, the complexes undergo reversible oxidation of iridium(III) and irreversible reduction of the SF5 group. They emit bright green phosphorescence in acetonitrile solution and in thin films at room temperature, with emission maxima between 482–519 nm and photoluminescence quantum yields of up to 7…
Wide-Bite-Angle Diphosphine Ligands in Thermally Activated Delayed Fluorescent Copper(I) Complexes: Impact on the Performance of Electroluminescence Applications.
We report a series of seven cationic heteroleptic copper(I) complexes of the form [Cu(P^P)(dmphen)]BF4, where dmphen is 2,9-dimethyl-1,10-phenanthroline and P^P is a diphosphine chelate, in which the effect of the bite angle of the diphosphine ligand on the photophysical properties of the complexes was studied. Several of the complexes exhibit moderately high photoluminescence quantum yields in the solid state, with ΦPL of up to 35%, and in solution, with ΦPL of up to 98%. We were able to correlate the powder photoluminescence quantum yields with the % Vbur of the P^P ligand. The most emissive complexes were used to fabricate both organic light-emitting diodes and light-emitting electrochem…
Enhancing the photoluminescence quantum yields of blue-emitting cationic iridium(iii) complexes bearing bisphosphine ligands
EZ-C acknowledges the University of St Andrews for financial support. We thank Johnson Matthey and Umicore AG for the gift of materials and Cihang Yu for the preparation of isopropxantphos. We thank Dr. Nail Shaveleev for the synthesis of NMS25. IDWS and AKB acknowledge support from EPSRC (EP/J01771X). This work has been supported by the Spanish Ministry of Economy and Competitiveness (MINECO) MAT2014-55200. Herein we present a structure-property relationship study of thirteen cationic iridium (III) complexes of the form of [Ir(C^N)2(P^P)]PF6 in both solution and the solid state through systematic evaluation of six bisphosphine (P^P) ligands (xantphos, dpephos, dppe, Dppe, nixantphos and is…
CCDC 1490702: Experimental Crystal Structure Determination
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CCDC 1423252: Experimental Crystal Structure Determination
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CCDC 1546695: Experimental Crystal Structure Determination
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CCDC 1490703: Experimental Crystal Structure Determination
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CCDC 1423251: Experimental Crystal Structure Determination
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CCDC 2061123: Experimental Crystal Structure Determination
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CCDC 1490707: Experimental Crystal Structure Determination
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CCDC 1546696: Experimental Crystal Structure Determination
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CCDC 1423253: Experimental Crystal Structure Determination
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CCDC 2061124: Experimental Crystal Structure Determination
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CCDC 2061121: Experimental Crystal Structure Determination
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CCDC 1053872: Experimental Crystal Structure Determination
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CCDC 1053870: Experimental Crystal Structure Determination
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CCDC 2061118: Experimental Crystal Structure Determination
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CCDC 1423259: Experimental Crystal Structure Determination
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CCDC 2061119: Experimental Crystal Structure Determination
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CCDC 1490708: Experimental Crystal Structure Determination
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CCDC 1490705: Experimental Crystal Structure Determination
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CCDC 1546698: Experimental Crystal Structure Determination
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CCDC 1490429: Experimental Crystal Structure Determination
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CCDC 1423255: Experimental Crystal Structure Determination
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CCDC 1538393: Experimental Crystal Structure Determination
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CCDC 1538394: Experimental Crystal Structure Determination
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CCDC 1423254: Experimental Crystal Structure Determination
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CCDC 2061120: Experimental Crystal Structure Determination
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CCDC 1490428: Experimental Crystal Structure Determination
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CCDC 1546697: Experimental Crystal Structure Determination
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CCDC 2061122: Experimental Crystal Structure Determination
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CCDC 1423258: Experimental Crystal Structure Determination
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CCDC 1490430: Experimental Crystal Structure Determination
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CCDC 1423257: Experimental Crystal Structure Determination
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CCDC 1490706: Experimental Crystal Structure Determination
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CCDC 1490704: Experimental Crystal Structure Determination
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CCDC 1053871: Experimental Crystal Structure Determination
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CCDC 1423256: Experimental Crystal Structure Determination
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CCDC 1490431: Experimental Crystal Structure Determination
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