Di- and Trinuclear Gold Complexes of Diphenylphosphinoethyl-Functionalised Imidazolium Salts and their N-Heterocyclic Carbenes: Synthesis and Photophysical Properties

2014 ◽  
Vol 21 (2) ◽  
pp. 601-614 ◽  
Author(s):  
Sebastian Bestgen ◽  
Michael T. Gamer ◽  
Sergei Lebedkin ◽  
Manfred M. Kappes ◽  
Peter W. Roesky
Keyword(s):  
Photophysical Properties ◽  
Heterocyclic Carbenes ◽  
Imidazolium Salts ◽  
Gold Complexes

scholarly journals Iridium(iii) complexes with polypyridine ligands coordinated as N-heterocyclic carbenes. Synthesis, structure and photophysical properties

2012 ◽  
Vol 41 (46) ◽  
pp. 14126 ◽  
Author(s):  
Salvador Conejero ◽  
Celia Maya ◽  
Margarita Paneque ◽  
Ana Petronilho ◽  
Manuel L. Poveda ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Heterocyclic Carbenes ◽  
Polypyridine Ligands

Photophysical Properties and Electropolymerization of Gold Complexes of 3,3′′-Diethynyl-2,2′:5′,2′′-terthiophene

2010 ◽  
Vol 49 (19) ◽  
pp. 8802-8812 ◽  
Author(s):  
Angela M. Kuchison ◽  
Michael O. Wolf ◽  
Brian O. Patrick
Keyword(s):  
Photophysical Properties ◽  
Gold Complexes

Synthesis, luminescence and electrochemical properties of luminescent dinuclear mixed-valence gold complexes with alkynyl bridges

2015 ◽  
Vol 2 (5) ◽  
pp. 453-466 ◽  
Author(s):  
Ling-Ling Hung ◽  
Wai Han Lam ◽  
Keith Man-Chung Wong ◽  
Eddie Chung-Chin Cheng ◽  
Nianyong Zhu ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Photophysical Properties ◽  
Mixed Valence ◽  
Computational Studies ◽  
Gold Complexes

A series of luminescent dinuclear mixed-valence gold alkynyl complexes was synthesized. Their photophysical properties can be tuned by varying the nature of the alkynyl bridges, as supported by computational studies.

scholarly journals Scalable Synthesis of 1,3,4,5-Tetraaryl Imidazolium Salts as Precursors of Sterically Demanding N-Heterocyclic Carbenes

SynOpen ◽  
2020 ◽  
Vol 04 (01) ◽  
pp. 01-11
Author(s):  
Cengiz Azap ◽  
Anna Christoffers ◽  
Renat Kadyrov
Keyword(s):  
Large Scale ◽  
Oxidative Desulfurization ◽  
Heterocyclic Carbenes ◽  
Imidazolium Salts ◽  
Imidazolium Salt ◽  
Available N ◽  
Sterically Demanding ◽  
Cost Efficient ◽  
Scalable Synthesis ◽  
Electron Donation

A convenient, large-scale, and cost-efficient synthesis of 4,5-diarylsubstituted N,N-diarylimidazolium salts is described. A variety of 1,3,4,5-tetraaryl imidazolium salts with increasing electron donation and steric bulk of the N-aryl groups was synthesized in good yields. In the key step, readily available N,N′-diarylthioureas and benzoin/anisoin are coupled to give imidazole-2-thiones, followed by imidazolium salt formation by oxidative desulfurization. In this way, N,N-diarylimidazolium salts with 2-methoxy, 2-methyl, and 2-isopropyl substituents could be obtained; the synthesis of their 2-tert-butyl, 2,6-dimethyl, and 2,6-diisopropyl analogues failed.

scholarly journals Stimuli-Sensitive Aggregation-Induced Emission of Organogelators Containing Mesogenic Au(I) Complexes

Crystals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 388
Author(s):  
Supattra Panthai ◽  
Ryota Fukuhara ◽  
Kyohei Hisano ◽  
Osamu Tsutsumi
Keyword(s):  
Luminescence Intensity ◽  
Photophysical Properties ◽  
Sol Gel ◽  
Quantum Yields ◽  
Stimuli Responsive ◽  
Gold Complexes ◽  
Aggregation Induced Emission ◽  
Strong Luminescence ◽  
Constrained Environments ◽  
Stimuli Sensitive

As the luminescence from conventional organic luminophores is typically quenched in constrained environments, the aggregation-induced emission (AIE) phenomenon is of interest for the development of materials that exhibit strong luminescence in condensed phases. Herein, new bismesogenic Au complexes were developed as organogelators and their photophysical properties, including their AIE characteristics, were investigated in organogels and crystals. The crystals of the gold complexes exhibited room-temperature phosphorescence with relatively high quantum yields. Moreover, the gold complexes also showed photoluminescence in the organogels and we demonstrated that the reversible switching of the luminescence intensity was induced by the sol-gel phase transition. The intense photoluminescence in the crystal and gel was induced by the restricted internal motion of the luminophore in the molecular aggregates. However, in the sol, the network structure of the organogel was destroyed and the nonradiative deactivation of the excited states was enhanced. As a result, we can conclude that the switching of the luminescence intensity was induced by changes in the aggregated structures of the molecules. The developed Au-complex-based gelators are excellent candidates for the realization of stimuli-responsive soft and smart luminescent materials.

Selective Activation of Fluoroalkenes with N-Heterocyclic Carbenes: Synthesis of N-Heterocyclic Fluoroalkenes and Polyfluoroalkenyl Imidazolium Salts

2016 ◽  
Vol 22 (24) ◽  
pp. 8063-8067 ◽  
Author(s):  
Matthew C. Leclerc ◽  
Serge I. Gorelsky ◽  
Bulat M. Gabidullin ◽  
Ilia Korobkov ◽  
R. Tom Baker
Keyword(s):  
Heterocyclic Carbenes ◽  
Imidazolium Salts ◽  
Selective Activation

Thiazole-Annelated Imidazolium Salts: A New Architecture for N-Heterocyclic Carbenes

Synthesis ◽  
2008 ◽  
Vol 2008 (14) ◽  
pp. 2221-2228 ◽  
Author(s):  
Frank Glorius ◽  
Claudia Lohre ◽  
Roland Fröhlich
Keyword(s):  
Heterocyclic Carbenes ◽  
Imidazolium Salts

N-heterocyclic carbenes. IV.1synthesis of symmetrical and unsymmetrical imidazolium salts with abietane moiety

2011 ◽  
Vol 23 (1) ◽  
pp. 5-15 ◽  
Author(s):  
V. A. Glushkov ◽  
K. A. Arapov ◽  
M. S. Kotelev ◽  
K. S. Rudowsky ◽  
K. Yu. Suponitsky ◽  
...  
Keyword(s):  
Heterocyclic Carbenes ◽  
Imidazolium Salts
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