Hexaethylguanidinium Salts

Salchner, Robert; Kahlenberg, Volker; Gelbrich, Thomas; Wurst, Klaus; Rauch, Martin; Laus, Gerhard; Schottenberger, Herwig

doi:10.3390/cryst4030404

Cited by 7 publications

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“…Having different counteranions in the complexes causes them to have different crystal structures in the solid state. C–H···F contacts between the cationic part, [Ir(Meppy) 2 (MeObpy)] + , and the counteranion, [PF 6 ] − , are in the range of 2.12–2.52 Å, similar to the reported values . These distances are good agreement with the van der Waals limit of 2.67 Å, indicating a short interaction .…”

Section: Resultssupporting

confidence: 86%

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Structure–Property Relationship in Amber Color Light-Emitting Electrochemical Cell with TFSI Counteranion: Enhancing Device Performance by Different Substituents on N^∧N Ligand

et al. 2021

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Amber color emitting novel Ir(III) complexes were synthesized: [Ir-(Meppy) 2 (Fpbpy)][PF 6 ] (1bPF 6 ), [Ir(Meppy) 2 (Fpbpy)][TFSI] (1bTFSI), [Ir-(Meppy) 2 (MeObpy)][PF 6 ] (2bPF 6 ) and [Ir(Meppy) 2 (MeObpy)][TFSI] (2bTFSI), where Meppy = 2-(p-methylphenyl)-pyridine (b), Fpbpy = 4,4′-bis(4-fluorophenyl)-2,2′-bipyridine(1), and MeObpy = 4,4′-bis(4-methoxy)-2,2′-bipyridine (2). The photophysical and X-ray results showed that the complexes have aggregation-induced phosphorescent emission (AIPE) and a salt-induced polymorphism effect. The highest photoluminescence intensity was observed in complex 2bTFSI compared to other complexes in the solid state. Their theoretical absorption and phosphorescence emission transitions in acetonitrile were also investigated by using double-and triple-ζ basis sets with B3LYP and PBE0 hybrid functional. The best lightemitting electrochemical cell (LEC) performance was exhibited by complex 2bTFSI, and the data obtained were as follows: Luminance, current density, luminous efficiency, turn-on time, power efficiency, and external quantum efficiency were measured as 16 156 cd/m 2 , 554 mA/ cm 2 , 8.49 cd/A, 17 s, 3.95 lm/W and 6.37%, respectively. The investigation of crystallographic characteristics have shown that the LEC performance of these complexes depends on cationic−anionic interaction which has a significant influence on molecular stacking of the molecules. Because, complex 2bTFSI, with weak cationic−anionic interactions, shows strong π•••π stacking interactions between the adjacent molecules, it is the best lighting application candidate among the complexes.

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Section: Resultssupporting

confidence: 86%

“…C−H•••F contacts between the cationic part, [Ir-(Meppy) 2 (MeObpy)] + , and the counteranion, [PF 6 ] − , are in the range of 2.12−2.52 Å, similar to the reported values. 47 These distances are good agreement with the van der Waals limit of 2.67 Å, indicating a short interaction. 48 S2).…”

Section: ■ Experimental Sectionmentioning

confidence: 98%

Structure–Property Relationship in Amber Color Light-Emitting Electrochemical Cell with TFSI Counteranion: Enhancing Device Performance by Different Substituents on N^∧N Ligand

et al. 2021

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“…The conformations of these cations have been studied recently (Salchner et al, 2014). Large anions in which bulky groups at the end of a rigid rod assembly shield the charge were synthesized not long ago (Vitze, 2008).…”

Section: Structure Descriptionmentioning

confidence: 99%

Hexaethylguanidinium tetrakis(trimethylsilylethynyl)borate diethyl ether monosolvate

et al. 2017

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Structural studies of halide hexaalkylguanidinium salts

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et al. 2022

Journal of Molecular Structure

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Hexaethylguanidinium Salts

Cited by 7 publications

References 30 publications

Structure–Property Relationship in Amber Color Light-Emitting Electrochemical Cell with TFSI Counteranion: Enhancing Device Performance by Different Substituents on N^∧N Ligand

Structure–Property Relationship in Amber Color Light-Emitting Electrochemical Cell with TFSI Counteranion: Enhancing Device Performance by Different Substituents on N^∧N Ligand

Hexaethylguanidinium tetrakis(trimethylsilylethynyl)borate diethyl ether monosolvate

Structural studies of halide hexaalkylguanidinium salts

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Hexaethylguanidinium Salts

Cited by 7 publications

References 30 publications

Structure–Property Relationship in Amber Color Light-Emitting Electrochemical Cell with TFSI Counteranion: Enhancing Device Performance by Different Substituents on N∧N Ligand

Structure–Property Relationship in Amber Color Light-Emitting Electrochemical Cell with TFSI Counteranion: Enhancing Device Performance by Different Substituents on N∧N Ligand

Hexaethylguanidinium tetrakis(trimethylsilylethynyl)borate diethyl ether monosolvate

Structural studies of halide hexaalkylguanidinium salts

Contact Info

Product

Resources

About

Structure–Property Relationship in Amber Color Light-Emitting Electrochemical Cell with TFSI Counteranion: Enhancing Device Performance by Different Substituents on N^∧N Ligand

Structure–Property Relationship in Amber Color Light-Emitting Electrochemical Cell with TFSI Counteranion: Enhancing Device Performance by Different Substituents on N^∧N Ligand