scholarly journals Strong Luminescent Europium Complexes Induced by the Unprecedented Anti-chelate Effect of Acyl Groups on a N6-Hexadentate Ligand

2019 ◽  
Vol 48 (6) ◽  
pp. 593-596 ◽  
Author(s):  
Shuhei Ogata ◽  
Hiroaki Komiya ◽  
Naoto Goto ◽  
Ryota Tanabe ◽  
Kunihisa Sugimoto ◽  
...  
Keyword(s):  
Europium Complexes ◽  
Chelate Effect ◽  
Hexadentate Ligand

Carbon Dioxide-Mediated C(sp2)–H Arylation of Primary and Secondary Benzylamines

2018 ◽  
Author(s):  
Mohit Kapoor ◽  
Pratibha Chand-Thakuri ◽  
Michael Young
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Bond Activation ◽  
Bond Formation ◽  
Carbon Bond ◽  
Chelate Effect ◽  
Free Amine ◽  
Carbon Carbon Bond ◽  
New Strategy ◽  
Metal Catalyzed

Carbon-carbon bond formation by transition metal-catalyzed C–H activation has become an important strategy to fabricate new bonds in a rapid fashion. Despite the pharmacological importance of <i>ortho</i>-arylbenzylamines, however, effective <i>ortho</i>-C–C bond formation from C–H bond activation of free primary and secondary benzylamines using Pd<sup>II</sup> remains an outstanding challenge. Presented herein is a new strategy for constructing <i>ortho</i>-arylated primary and secondary benzylamines mediated by carbon dioxide (CO<sub>2</sub>). The use of CO<sub>2</sub> is critical to allowing this transformation to proceed under milder conditions than previously reported, and that are necessary to furnish free amine products that can be directly used or elaborated without the need for deprotection. In cases where diarylation is possible, a chelate effect is demonstrated to facilitate selective monoarylation.

Quantum Yields over 80% Achieved in Luminescent Europium Complexes by Employing Diphenylphosphoryl Tridentate Ligands

2018 ◽  
Vol 57 (13) ◽  
pp. 7512-7515 ◽  
Author(s):  
Chen Wei ◽  
Boxun Sun ◽  
Zelun Cai ◽  
Zifeng Zhao ◽  
Yu Tan ◽  
...  
Keyword(s):  
Quantum Yields ◽  
Europium Complexes ◽  
Tridentate Ligands

Luminescence of divalent europium complexes with crown ethers, cryptands and polyethylene glycols

1983 ◽  
Vol 93 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Gin-Ya Adachi ◽  
Kenji Sorita ◽  
Kenji Kawata ◽  
Katsuhiko Tomokiyo ◽  
Jiro Shiokawa
Keyword(s):  
Crown Ethers ◽  
Polyethylene Glycols ◽  
Europium Complexes ◽  
Divalent Europium

Fluorescence-enhanced europium complexes for the assessment of renal function

2008 ◽  
Author(s):  
Lori K. Chinen ◽  
Karen P. Galen ◽  
K. T. Kuan ◽  
Mary E. Dyszlewski ◽  
Hiroaki Ozaki ◽  
...  
Keyword(s):  
Renal Function ◽  
Europium Complexes

Effects of electron-withdrawing groups in imidazole-phenanthroline ligands and their influence on the photophysical properties of EuIII complexes for white light-emitting diodes

2017 ◽  
Vol 41 (18) ◽  
pp. 9826-9839 ◽  
Author(s):  
Boddula Rajamouli ◽  
Rachna Devi ◽  
Abhijeet Mohanty ◽  
Venkata Krishnan ◽  
Sivakumar Vaidyanathan
Keyword(s):  
Thin Film ◽  
Quantum Yield ◽  
White Light ◽  
Light Emitting Diode ◽  
Photophysical Properties ◽  
Red Light ◽  
Europium Complexes ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Phenanthroline Ligands

The red light emitting diode (LED) was fabricated by using europium complexes with InGaN LED (395 nm) and shown digital images, corresponding CIE color coordinates (red region) as well as obtained highest quantum yield of the thin film (78.7%).

The Role of Silver and Gold Nanoparticles in Enhancing Luminescence of Europium Complexes

2014 ◽  
Vol 14 (6) ◽  
pp. 4357-4362 ◽  
Author(s):  
Hongyan Zhao ◽  
Feng Song ◽  
Fengxiao Wang ◽  
Jiadong Liu ◽  
Yanling Liu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Europium Complexes ◽  
Silver And Gold Nanoparticles
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