0000000000230821
AUTHOR
Nicola Armaroli
ChemInform Abstract: Luminescent Ionic Transition Metal Complexes for Light-Emitting Electrochemical Cells
Higher efficiency in the end-use of energy requires substantial progress in lighting concepts. All the technologies under development are based on solid-state electroluminescent materials and belong to the general area of solid-state lighting (SSL). The two main technologies being developed in SSL are light-emitting diodes (LEDs) and organic light-emitting diodes (OLEDs), but in recent years, light-emitting electrochemical cells (LECs) have emerged as an alternative option. The luminescent materials in LECs are either luminescent polymers together with ionic salts or ionic species, such as ionic transition-metal complexes (iTMCs). Cyclometalated complexes of IrIII are by far the most utiliz…
Lumineszierende ionische Übergangsmetallkomplexe für leuchtende elektrochemische Zellen
Durch die Umsetzung neuer Beleuchtungskonzepte konnte die Verwertung von Energie deutlich effizienter gestaltet werden. Alle derzeit entwickelten Technologien beruhen auf elektrolumineszierenden Festkorpern und lassen sich allgemein als Festkorperbeleuchtung (solid-state lighting, SSL) einstufen. Die beiden wichtigsten Zweige der SSL-Technologie sind Leuchtdioden (LEDs) und organische Leuchtdioden (OLEDs), doch seit kurzem bilden auch leuchtende elektrochemische Zellen (LECs) eine Alternative, die als aktive Materialien entweder lumineszierende Polymere in Kombination mit ionischen Salzen oder lumineszierende ionische Spezies wie ionische Ubergangsmetallkomplexe (iTMCs) enthalten. Cyclometa…
Iridium(III) Complexes with Phenyl-tetrazoles as Cyclometalating Ligands
Ir(II) cationic complexes with cyclometalating tetrazolate ligands were prepared for the first time, following a two-step strategy based on (i) a silver-assisted cyclometalation reaction of a tetrazole derivative with IrCl3 affording a bis-cyclometalated solvato-complex P ([Ir(ptrz)(2)(CH3CN)(2)](+), Hptrz = 2-methyl-5-phenyl-2H-tetrazole); (ii) a substitution reaction with five neutral ancillary ligands to get [Ir(ptrz)(2)L](+), with L = 2,2'-bypiridine (1), 4,4'-di-tert-butyl-2,2'-bipyridine (2), 1,10-phenanthroline (3), and 2-(1-phenyl-1H-1,2,3-triazol-4-yl)pyridine (4), and [Ir(ptrz)(2)L-2](+), with L = tertbutyl isocyanide (5). X-ray crystal structures of P, 2, and 3 were solved. Elect…
Anionic Cyclometalated Iridium(III) Complexes with a Bis-Tetrazolate Ancillary Ligand for Light-Emitting Electrochemical Cells
none 10 si A series of monoanionic Ir(III) complexes (2-4) of general formula [Ir(C^N)2(b-trz)](TBA) are presented, where C^N indicates three different cyclometallating ligands (Hppy = 2-phenylpyridine; Hdfppy = 2-(2,4-difluoro-phenyl)pyridine; Hpqu = 2-methyl-3-phenylquinoxaline), b-trz is a bis-tetrazolate anionic N^N chelator (H2b-trz = di(1H-tetrazol-5-yl)methane), and TBA = tetrabutylammonium. 2-4 are prepared in good yields by means of the reaction of the suitable b-trz bidentate ligand with the desired iridium(III) precursor. The chelating nature of the ancillary ligand, thanks to an optimized structure and geometry, improves the stability of the complexes, which have been fully char…
Concave macrobicycles: Absorption spectra, luminescence properties, and endocavital complexation of neutral organic guests
By a mild modified Eglinton coupling a series of diynebridged macrobicyclic hosts capable of endocavital complexation were synthesized and their structures and complexation properties investigated by X-ray analysis. The inclusion of DMSO in 7 suggests a direct correlation between steric fit and orientation of the guest. On the basis of this hypothesis, the orientation of acetone in an endocavital inclusion of 2 was predicted and verified by X-ray analysis. Comparison of the single-crystal X-ray structures of the vacant macrobicycle 3 and of a family of macrobicycles showing endocavital or “pocket” complexation of neutral organic guests suggests that torsion of the cavities upon complexation…
Luminescent Ionic Transition-Metal Complexes for Light-Emitting Electrochemical Cells
Higher efficiency in the end-use of energy requires substantial progress in lighting concepts. All the technologies under development are based on solid-state electroluminescent materials and belong to the general area of solid-state lighting (SSL). The two main technologies being developed in SSL are light-emitting diodes (LEDs) and organic light-emitting diodes (OLEDs), but in recent years, light-emitting electrochemical cells (LECs) have emerged as an alternative option. The luminescent materials in LECs are either luminescent polymers together with ionic salts or ionic species, such as ionic transition-metal complexes (iTMCs). Cyclometalated complexes of Ir(III) are by far the most util…
CCDC 968510: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Florian Kessler, Manuel Delgado, Julien Frey, Federico Bazzanini, Gianluca Accorsi, Nicola Armaroli, Henk J. Bolink, Enrique Ortí, Rosario Scopelliti, Md. Khaja Nazeeruddin, and Etienne Baranoff|2013|Inorg.Chem.|52|10292|doi:10.1021/ic400600d
CCDC 987700: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Andrea Baschieri, Isacco Gualandi, Juan J. Serrano-Pérez, José M. Junquera-Hernández, Domenica Tonelli, Andrea Mazzanti, Sara Muzzioli, Stefano Stagni, Cristina Roldan-Carmona, Antonio Pertegás, Henk J. Bolink, Enrique Ortí, Letizia Sambri, and Nicola Armaroli|2014|Inorg.Chem.|53|7709|doi:10.1021/ic500999k
CCDC 1555727: Experimental Crystal Structure Determination
Related Article: Elia Matteucci, Andrea Baschieri, Andrea Mazzanti, Letizia Sambri, Jorge Ávila, Antonio Pertegás, Henk J. Bolink, Filippo Monti, Enrico Leoni, and Nicola Armaroli|2017|Inorg.Chem.|56|10584|doi:10.1021/acs.inorgchem.7b01544
CCDC 968508: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Florian Kessler, Manuel Delgado, Julien Frey, Federico Bazzanini, Gianluca Accorsi, Nicola Armaroli, Henk J. Bolink, Enrique Ortí, Rosario Scopelliti, Md. Khaja Nazeeruddin, and Etienne Baranoff|2013|Inorg.Chem.|52|10292|doi:10.1021/ic400600d
CCDC 871500: Experimental Crystal Structure Determination
Related Article: Edwin C. Constable, Markus Neuburger, Pirmin Rösel, Gabriel E. Schneider, Jennifer A. Zampese, Catherine E. Housecroft, Filippo Monti, Nicola Armaroli, Rubén D. Costa, and Enrique Ortí|2013|Inorg.Chem.|52|885|doi:10.1021/ic302026f
CCDC 968506: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Florian Kessler, Manuel Delgado, Julien Frey, Federico Bazzanini, Gianluca Accorsi, Nicola Armaroli, Henk J. Bolink, Enrique Ortí, Rosario Scopelliti, Md. Khaja Nazeeruddin, and Etienne Baranoff|2013|Inorg.Chem.|52|10292|doi:10.1021/ic400600d
CCDC 871501: Experimental Crystal Structure Determination
Related Article: Edwin C. Constable, Markus Neuburger, Pirmin Rösel, Gabriel E. Schneider, Jennifer A. Zampese, Catherine E. Housecroft, Filippo Monti, Nicola Armaroli, Rubén D. Costa, and Enrique Ortí|2013|Inorg.Chem.|52|885|doi:10.1021/ic302026f
CCDC 987698: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Andrea Baschieri, Isacco Gualandi, Juan J. Serrano-Pérez, José M. Junquera-Hernández, Domenica Tonelli, Andrea Mazzanti, Sara Muzzioli, Stefano Stagni, Cristina Roldan-Carmona, Antonio Pertegás, Henk J. Bolink, Enrique Ortí, Letizia Sambri, and Nicola Armaroli|2014|Inorg.Chem.|53|7709|doi:10.1021/ic500999k
CCDC 968507: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Florian Kessler, Manuel Delgado, Julien Frey, Federico Bazzanini, Gianluca Accorsi, Nicola Armaroli, Henk J. Bolink, Enrique Ortí, Rosario Scopelliti, Md. Khaja Nazeeruddin, and Etienne Baranoff|2013|Inorg.Chem.|52|10292|doi:10.1021/ic400600d
CCDC 987699: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Andrea Baschieri, Isacco Gualandi, Juan J. Serrano-Pérez, José M. Junquera-Hernández, Domenica Tonelli, Andrea Mazzanti, Sara Muzzioli, Stefano Stagni, Cristina Roldan-Carmona, Antonio Pertegás, Henk J. Bolink, Enrique Ortí, Letizia Sambri, and Nicola Armaroli|2014|Inorg.Chem.|53|7709|doi:10.1021/ic500999k
CCDC 968505: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Florian Kessler, Manuel Delgado, Julien Frey, Federico Bazzanini, Gianluca Accorsi, Nicola Armaroli, Henk J. Bolink, Enrique Ortí, Rosario Scopelliti, Md. Khaja Nazeeruddin, and Etienne Baranoff|2013|Inorg.Chem.|52|10292|doi:10.1021/ic400600d
CCDC 871502: Experimental Crystal Structure Determination
Related Article: Edwin C. Constable, Markus Neuburger, Pirmin Rösel, Gabriel E. Schneider, Jennifer A. Zampese, Catherine E. Housecroft, Filippo Monti, Nicola Armaroli, Rubén D. Costa, and Enrique Ortí|2013|Inorg.Chem.|52|885|doi:10.1021/ic302026f
CCDC 968509: Experimental Crystal Structure Determination
Related Article: Filippo Monti, Florian Kessler, Manuel Delgado, Julien Frey, Federico Bazzanini, Gianluca Accorsi, Nicola Armaroli, Henk J. Bolink, Enrique Ortí, Rosario Scopelliti, Md. Khaja Nazeeruddin, and Etienne Baranoff|2013|Inorg.Chem.|52|10292|doi:10.1021/ic400600d