Elucidating the Nonradiative Deactivation Pathways in a Cationic Iridium Complex with 2,4-di(1H-pyrazol-1-yl)Pyridine as the Ancillary Ligand

2018 ◽  
Vol 122 (49) ◽  
pp. 28256-28264 ◽  
Author(s):  
Mengzhen Chen ◽  
Shirun Wang ◽  
Xiangzhi Song ◽  
Lei He
Keyword(s):  
Iridium Complex ◽  
Ancillary Ligand ◽  
Nonradiative Deactivation

Pure red phosphorescent OLED (PhOLED) based on a cyclometalated iridium complex with a dibenzoylmethane (dbm) moiety as the ancillary ligand

2014 ◽  
Vol 562 ◽  
pp. 530-537 ◽  
Author(s):  
Frédéric Dumur ◽  
Marc Lepeltier ◽  
Hossein Zamani Siboni ◽  
Pu Xiao ◽  
Bernadette Graff ◽  
...  
Keyword(s):  
Iridium Complex ◽  
Ancillary Ligand

Imine as a Linchpin Approach for Distal C(sp2)–H Functionalization

2020 ◽  
Author(s):  
Sukdev Bag ◽  
Sadhan Jana ◽  
Sukumar Pradhan ◽  
Suman Bhowmick ◽  
Nupur Goswami ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Bond Activation ◽  
Bond Formation ◽  
Ancillary Ligand ◽  
Significant Challenge ◽  
Site Selectivity ◽  
Directing Group ◽  
Covalently Linked ◽  
Complex Organic ◽  
Post Functionalization

<p>Despite the widespread applications of C–H functionalization, controlling site selectivity remains a significant challenge. Covalently attached directing group (DG) served as an ancillary ligand to ensure proximal <i>ortho</i>-, distal <i>meta</i>- and <i>para</i>-C-H functionalization over the last two decades. These covalently linked DGs necessitate two extra steps for a single C–H functionalization: introduction of DG prior to C–H activation and removal of DG post-functionalization. We introduce here a transient directing group for distal C(<i>sp<sup>2</sup></i>)-H functionalization <i>via</i> reversible imine formation. By overruling facile proximal C-H bond activation by imine-<i>N</i> atom, a suitably designed pyrimidine-based transient directing group (TDG) successfully delivered selective distal C-C bond formation. Application of this transient directing group strategy for streamlining the synthesis of complex organic molecules without any necessary pre-functionalization at the distal position has been explored.</p>

Synthesis of novel light-emitting polymers and application in diodes with red phosphorescent cyclometalated iridium complex

2008 ◽  
Vol 8 (3-4) ◽  
pp. 490-493 ◽  
Author(s):  
Hui Wang ◽  
Jeong-Tak Ryu ◽  
Minhyeon Song ◽  
Younghwan Kwon
Keyword(s):  
Iridium Complex ◽  
Light Emitting

Hydrogen production from cellulose catalyzed by an iridium complex in ionic liquid under mild conditions

2021 ◽  
Author(s):  
Genki Toyooka ◽  
Toshiki Tanaka ◽  
Kenji Kitayama ◽  
Naoko Kobayashi ◽  
Takashi Watanabe ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Hydrogen Production ◽  
Iridium Complex ◽  
Simple Method ◽  
Mild Conditions ◽  
Iridium Catalyst

A new and simple method for hydrogen production from cellulose using an iridium catalyst and an ionic liquid under mild conditions was developed.

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