0000000000087718

AUTHOR

Florian Kessler

showing 12 related works from this author

Near-UV to red-emitting charged bis-cyclometallated iridium(iii) complexes for light-emitting electrochemical cells

2011

Herein we report a series of charged iridium complexes emitting from near-UV to red using carbene-based N^C: ancillary ligands. Synthesis, photophysical and electrochemical properties of this series are described in detail together with X-ray crystal structures. Density Functional Theory calculations show that the emission originates from the cyclometallated main ligand, in contrast to commonly designed charged complexes using bidentate N^N ancillary ligands, where the emission originates from the ancillary N^N ligand. The radiative process of this series of compounds is characterized by relatively low photoluminescence quantum yields in solution that is ascribed to non-radiative deactivati…

Inorganic ChemistryPhotoluminescenceDenticitychemistryLigandExcited statechemistry.chemical_elementDensity functional theoryIridiumElectroluminescencePhotochemistryVisible spectrumDalton Trans.
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A deep-blue emitting charged bis-cyclometallated iridium(iii) complex for light-emitting electrochemical cells

2013

We report here a new cationic bis-cyclometallated iridium(III) complex, 1, with deep-blue emission at 440 nm and its use in Light-emitting Electrochemical Cells (LECs). The design is based on the 2′,6′-difluoro-2,3′-bipyridine skeleton as the cyclometallating ligand and a bis-imidazolium carbene-type ancillary ligand. Furthermore, bulky tert-butyl substituents are used to limit the intermolecular interactions. LECs have been driven both at constant voltage (6 V) and constant current (2.5 mA cm−2). The performances are significantly improved with the latter method, resulting overall in one of the best reported greenish-blue LECs having fast response (17 s), light intensity over 100 cd m−2 an…

Materials scienceLigandIntermolecular forceCationic polymerizationAnalytical chemistrychemistry.chemical_elementGeneral ChemistryPhotochemistryElectrochemical cellLight intensitychemistryMaterials ChemistryConstant currentIridiumDeep blueJ. Mater. Chem. C
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Intraoperative transfusion practices and perioperative outcome in the European elderly: A secondary analysis of the observational ETPOS study

2022

PLOS ONE 17(1), e0262110 (2022). doi:10.1371/journal.pone.0262110

Clinical OncologyMaleScienceClinical Decision-MakingCancer TreatmentSurgical and Invasive Medical ProceduresGeographical LocationsDiagnostic MedicineOutcome Assessment Health CareMedicine and Health SciencesHumansBlood TransfusionProspective StudiesAgedAged 80 and overIntraoperative CareMultidisciplinaryTransfusion MedicineQRAnemiaHematologyClinical Laboratory SciencesHealth CareEuropeSurgical OncologyOncologyAge GroupsElective Surgical ProceduresPeople and PlacesMedicinePopulation GroupingsFemaleGeriatric CareClinical MedicineErythrocyte TransfusionResearch ArticlePLOS ONE
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Chloride ion impact on materials for light-emitting electrochemical cells

2013

Small quantities of Cl(-) ions result in dramatic reductions in the performance of ionic transition metal complexes in light-emitting electrochemical cells. Strong ion-pairing between aromatic protons and chloride has been established in both the solid state and solution. X-ray structural determination of 2{[Ir(ppy)2(bpy)][Cl]}·2CH2Cl2·[H3O]·Cl reveals the unusual nature of an impurity encountered in the preparation of [Ir(ppy)2(bpy)][PF6].

Inorganic ChemistryTransition metalImpurityChemistryInorganic chemistrymedicineSolid-stateIonic bondingChlorideElectrochemical cellmedicine.drugIon
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CCDC 968510: Experimental Crystal Structure Determination

2013

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

(11'-methylenebis(3-methyl-imidazol-2-ylidene))-bis(2-phenylpyridine)-iridium hexafluorophosphate dichloromethane solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 968508: Experimental Crystal Structure Determination

2013

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

(11'-methylenebis(3-methyl-imidazol-2-ylidene))-bis(2-(24-difluorophenyl)pyridine)-iridium hexafluorophosphate dichloromethane solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 968506: Experimental Crystal Structure Determination

2013

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

Space GroupCrystallographybis(35-difluoro-2-(pyridin-2-yl)phenyl)-(1-hexyl-3-(4-methylpyridin-2-yl)-benzimidazol-2-ylidene)-iridium hexafluorophosphateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 959828: Experimental Crystal Structure Determination

2013

Related Article: Gabriel E. Schneider, Henk J. Bolink, Edwin C. Constable, Cathrin D. Ertl, Catherine E. Housecroft, Antonio Pertegàs, Jennifer A. Zampese, Andreas Kanitz, Florian Kessler, Sebastian B. Meier|2014|Dalton Trans.|43|1961|doi:10.1039/C3DT53229A

(22'-Bipyridine)-bis(2-(pyridin-2-yl)phenyl)-iridium hemikis(oxonium) sesquichloride dichloromethane solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 971737: Experimental Crystal Structure Determination

2013

Related Article: Gabriel E. Schneider, Henk J. Bolink, Edwin C. Constable, Cathrin D. Ertl, Catherine E. Housecroft, Antonio Pertegàs, Jennifer A. Zampese, Andreas Kanitz, Florian Kessler, Sebastian B. Meier|2014|Dalton Trans.|43|1961|doi:10.1039/C3DT53229A

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(5-(Methylsulfonyl)-2-(pyridin-2-yl)phenyl)-(6-phenyl-22'-bipyridine)-iridium chlorideExperimental 3D Coordinates
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CCDC 968507: Experimental Crystal Structure Determination

2013

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

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(35-difluoro-2-(pyridin-2-yl)phenyl)-(1-methyl-3-(pyridin-2-yl)-imidazol-2-ylidene)-iridium hexafluorophosphate acetone solvateExperimental 3D Coordinates
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CCDC 968505: Experimental Crystal Structure Determination

2013

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

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates(1-hexyl-3-(4-methylpyridin-2-yl)-benzimidazol-2-ylidene)-bis(2-(pyridin-2-yl)phenyl)-iridium hexafluorophosphate dichloromethane solvate
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CCDC 968509: Experimental Crystal Structure Determination

2013

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

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(35-difluoro-2-(pyridin-2-yl)phenyl)-(1-methyl-3-(4-methylpyridin-2-yl)-imidazol-2-ylidene)-iridium hexafluorophosphate dichloromethane unknown solvateExperimental 3D Coordinates
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