作者:Daniel G. Congrave、Yu-Ting Hsu、Andrei S. Batsanov、Andrew Beeby、Martin R. Bryce
DOI:10.1039/c7dt04201a
日期:——
π–π interactions to influence the photophysical properties of diiridium complexes is an unexplored topic, and provides the motivation for the present study. A series of diarylhydrazide-bridged diiridium complexes functionalised with phenylpyridine (ppy)-based cyclometalating ligands is reported. It is shown by NMR studies in solution and single crystal X-ray analysis that intramolecular π–π interactions
Conjugated, rigidified bibenzimidazole ancillary ligands for enhanced photoluminescence quantum yields of orange/red-emitting iridium(<scp>iii</scp>) complexes
作者:Adam F. Henwood、Daniel Antón-García、Mégane Morin、Diego Rota Martir、David B. Cordes、Colin Casey、Alexandra M. Z. Slawin、Tomas Lebl、Michael Bühl、Eli Zysman-Colman
DOI:10.1039/c9dt00423h
日期:——
MesnpyH ligands confer a red-shift in the emission compared to MesppyH but maintain high photoluminescence quantumyields due to the steric bulk of the mesityl groups. The H2bibenz and o-xylbibenz ligands are shown to be electronically indistinct to dtbubpy but give complexes with higher quantumyields than analogous complexes bearing dtbubpy. In particular, the rigidity of the o-xylbibenz ligand, combined
Solubilised bright blue-emitting iridium complexes for solution processed OLEDs
作者:Adam F. Henwood、Ashu K. Bansal、David B. Cordes、Alexandra M. Z. Slawin、Ifor D. W. Samuel、Eli Zysman-Colman
DOI:10.1039/c6tc00151c
日期:——
Combining a sterically bulky, electron-deficient cyclometalating C∧N ligands with an electron rich, highly rigidified N∧N ligand gives an iridium complex, that achieves extraordinarily bright blue emission (ΦPL = 90%; λmax = 459 nm in MeCN) for a cationic iridium complex.
作者:Helen Benjamin、Yonghao Zheng、Valery N. Kozhevnikov、Jamie S. Siddle、Luke J. O'Driscoll、Mark A. Fox、Andrei S. Batsanov、Gareth C. Griffiths、Fernando B. Dias、Andrew P. Monkman、Martin R. Bryce
DOI:10.1039/c9dt04672k
日期:——
heteroleptic iridium(iii) complexes IrL2(pic) (2-6) based on the archetypical blue emitter FIrpic have been synthesised. The cyclometallating ligands L are derivedfrom 2-(2,6-F2-3-pyridyl)-4-mesitylpyridine (7), 2-(3-cyano-2,6-F2-phenyl)-4-mesitylpyridine (8), 2-(2,6-F2-phenyl)-4-[2,7-(HexO)2-9H-carbazol-9-yl]pyridine (9), 2-(2,6-F2-3-pyridyl)-4-[2,7-(HexO)2-9H-carbazol-9-yl]pyridine (10) and 2-(3-cyano-2