0000000001310411
AUTHOR
Nail M. Shavaleev
showing 14 related works from this author
Host–guest blue light-emitting electrochemical cells
2014
Carbazole, a commonly used hole-transporter for organic electronics, has been modified with an imidazolium cation and a hexafluorophosphate counter-anion to give an ionic hole-transporter. It has been applied as one of the hosts in a host–guest blue light-emitting electrochemical cell (LEC) with the neutral blue emitter FIrPic. We have obtained efficient and bright blue LECs with an electroluminescence maximum at 474 nm and efficacy of 5 cd A−1 at a luminance of 420 cd m−2, thereby demonstrating the potential of the ionic organic charge-transporters and of the host–guest architecture for LECs.
Green phosphorescence and electroluminescence of sulfur pentafluoride-functionalized cationic iridium(III) complexes
2015
EZ-C acknowledges the University of St Andrews for financial support. We report four cationic iridium(III) complexes [Ir(C^N)2(dtBubpy)](PF6) that have sulfurpentafluoride-modified 1-phenylpyrazole and 2-phenylpyridine cyclometalating (C^N) ligands (dtBubpy = 4,4'-di-tert-butyl-2,2'-bipyridyl). Three of the complexes were characterized by single-crystal X-ray structure analysis. In cyclic voltammetry, the complexes undergo reversible oxidation of iridium(III) and irreversible reduction of the SF5 group. They emit bright green phosphorescence in acetonitrile solution and in thin films at room temperature, with emission maxima between 482–519 nm and photoluminescence quantum yields of up to 7…
Efficient orange light-emitting electrochemical cells
2012
We report the first bis-cyclometalated cationic iridium(III) complex with N-aryl-substituted 1H-imidazo [4,5-f][1,10]phenanthroline. The complex emits yellow-orange phosphorescence with a maximum at 583 nm, a quantum yield of 43%, and an excited-state lifetime of 910 ns in argon-saturated dichloromethane. Optimized orange light-emitting electrochemical cells with the new Ir(III) complex exhibit fast turn-on, a peak luminance of 684 cd m(-2) and a peak efficacy of 6.5 cd A(-1); in 850 h of continuous operation their luminance and efficacy decrease only by 20%.
Pulsed-current versus constant-voltage light-emitting electrochemical cells with trifluoromethyl-substituted cationic iridium(iii) complexes
2013
We report on five cationic iridium(III) complexes with cyclometalating 2-(3′-trifluoromethylphenyl)pyridine and a diimine, [(C⁁N)2Ir(N⁁N)](PF6), N⁁N = 4,4′-R2-2,2′-dipyridyl or 4,7-R2-1,10-phenanthroline (R = H, Me, tert-Bu, Ph), and characterize three of them by crystal structure analysis. The complexes undergo oxidation of the Ir–aryl fragment at 1.13–1.16 V (against ferrocene couple) and reduction of the N⁁N ligand at −1.66 V to −1.86 V, and have a redox gap of 2.84–2.99 V. The complexes exhibit bluish-green to green-yellow phosphorescence in an argon-saturated dichloromethane solution at room temperature with a maximum at 486–520 nm, quantum yield of 61–67%, and an excited-state lifetim…
Bis-Sulfone- and Bis-Sulfoxide-Spirobifluorenes: Polar Acceptor Hosts with Tunable Solubilities for Blue-Phosphorescent Light-Emitting Devices
2016
Bis-sulfone- and bis-sulfoxide-spirobifluorenes are a promising class of high-triplet-energy electron-acceptor hosts for blue phosphorescent light-emitting devices. The molecular design and synthetic route are simple and facilitate tailoring of the solubilities of the host materials without lowering the high-energy triplet state. The syntheses and characterization (including single-crystal structures) of four electron-accepting hosts are reported; the trend in their reduction potentials is consistent with the electron-withdrawing nature of the sulfone or sulfoxide substituents. Emission maxima of 421–432 nm overlap with the MLCT absorption of the sky-blue emitter bis(4,6-difluorophenyl-pyri…
CCDC 1053872: Experimental Crystal Structure Determination
2015
Related Article: Nail M. Shavaleev, Guohua Xie, Shinto Varghese, David B. Cordes, Alexandra M. Z. Slawin, Cristina Momblona, Enrique Ortí, Henk J. Bolink, Ifor D. W. Samuel, Eli Zysman-Colman|2015|Inorg.Chem.|54|5907|doi:10.1021/acs.inorgchem.5b00717
CCDC 1053870: Experimental Crystal Structure Determination
2015
Related Article: Nail M. Shavaleev, Guohua Xie, Shinto Varghese, David B. Cordes, Alexandra M. Z. Slawin, Cristina Momblona, Enrique Ortí, Henk J. Bolink, Ifor D. W. Samuel, Eli Zysman-Colman|2015|Inorg.Chem.|54|5907|doi:10.1021/acs.inorgchem.5b00717
CCDC 974892: Experimental Crystal Structure Determination
2016
Related Article: Cathrin D. Ertl, Henk J. Bolink, Catherine E. Housecroft, Edwin C. Constable, Enrique Ortí, José M. Junquera-Hernández, Markus Neuburger, Nail M. Shavaleev, Mohammad Khaja Nazeeruddin and David Vonlanthen|2016|Eur.J.Org.Chem.|2016|2037|doi:10.1002/ejoc.201600247
CCDC 914725: Experimental Crystal Structure Determination
2013
Related Article: Nail M. Shavaleev, Rosario Scopelliti, Michael Grätzel, Mohammad K. Nazeeruddin, Antonio Pertegás, Cristina Roldán-Carmona, Daniel Tordera and Henk J. Bolink|2013|J.Mater.Chem.C|1|2241|doi:10.1039/C3TC00808H
CCDC 914726: Experimental Crystal Structure Determination
2013
Related Article: Nail M. Shavaleev, Rosario Scopelliti, Michael Grätzel, Mohammad K. Nazeeruddin, Antonio Pertegás, Cristina Roldán-Carmona, Daniel Tordera and Henk J. Bolink|2013|J.Mater.Chem.C|1|2241|doi:10.1039/C3TC00808H
CCDC 914724: Experimental Crystal Structure Determination
2013
Related Article: Nail M. Shavaleev, Rosario Scopelliti, Michael Grätzel, Mohammad K. Nazeeruddin, Antonio Pertegás, Cristina Roldán-Carmona, Daniel Tordera and Henk J. Bolink|2013|J.Mater.Chem.C|1|2241|doi:10.1039/C3TC00808H
CCDC 993287: Experimental Crystal Structure Determination
2016
Related Article: Cathrin D. Ertl, Henk J. Bolink, Catherine E. Housecroft, Edwin C. Constable, Enrique Ortí, José M. Junquera-Hernández, Markus Neuburger, Nail M. Shavaleev, Mohammad Khaja Nazeeruddin and David Vonlanthen|2016|Eur.J.Org.Chem.|2016|2037|doi:10.1002/ejoc.201600247
CCDC 974893: Experimental Crystal Structure Determination
2016
Related Article: Cathrin D. Ertl, Henk J. Bolink, Catherine E. Housecroft, Edwin C. Constable, Enrique Ortí, José M. Junquera-Hernández, Markus Neuburger, Nail M. Shavaleev, Mohammad Khaja Nazeeruddin and David Vonlanthen|2016|Eur.J.Org.Chem.|2016|2037|doi:10.1002/ejoc.201600247
CCDC 1053871: Experimental Crystal Structure Determination
2015
Related Article: Nail M. Shavaleev, Guohua Xie, Shinto Varghese, David B. Cordes, Alexandra M. Z. Slawin, Cristina Momblona, Enrique Ortí, Henk J. Bolink, Ifor D. W. Samuel, Eli Zysman-Colman|2015|Inorg.Chem.|54|5907|doi:10.1021/acs.inorgchem.5b00717