Facile synthesis of ionic liquids possessing chiral carboxylates

Allen, Christine R.; Richard, Paulina L.; Ward, Antony J.; Water, Leon G. A. van de; Masters, Anthony F.; Maschmeyer, Thomas

doi:10.1016/j.tetlet.2006.08.007

Cited by 77 publications

(58 citation statements)

References 10 publications

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“…The [TBA][AC] ionic liquids [12] and the functionalised SBA-15 [14,15] 82 mmol). The cadmium and sulfide salt solutions were rapidly mixed together under vigorous stirring to yield a fine, pale-yellow precipitate.…”

Section: Methodsmentioning

confidence: 99%

“…This was achieved by precipitating CdS from its ionic constituents, Cd 2 + and S 2À , under ambient conditions, from an aqueous solution containing one of six tetrabutylammonium amino carboxylate ionic liquids (abbreviated as [TBA][AC]), the structures of which are summarised in Figure 1. [12] Water and ethanol were employed as co-solvents to the ionic liquids to improve the solubility of the precursors and lower the viscosity of the solvent systems. The role of the ionic liquid is to control the particle size through two types of interaction that passivate the CdS surface.…”

Section: Introductionmentioning

confidence: 99%

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Tuning the Photocatalytic Activity of CdS Nanocrystals through Intermolecular Interactions in Ionic‐Liquid Solvent Systems

Lau

Water

Masters

et al. 2012

Chemistry A European J

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Synthetic solvent systems for the fine-tuned preparation of CdS nanocrystallites, active in visible-light photocatalytic hydrogen production, were studied. To control crystallite size and spectral properties, the CdS crystals were synthesised by using different solvent systems, containing a series of tetrabutylammonium amino carboxylate ionic liquids as the crystal-growth control agents. Six samples of CdS, all with similar physical and spectral properties, exhibited greatly varying photocatalytic activity, with the most active sample outperforming the least active one by almost 60%. To rationalise this effect, the intermolecular interactions of the synthesis solvent system with the growing CdS nanocrystallites were characterised by using the Reichart betaine dye and the E(T)(N) polarity scale. A correlation was observed between the E(T)(N) values of the solvent system and the photocatalytic activity of the CdS nanocrystallite, suggesting that the hydrogen-bond-donating ability and/or dipolarity/polarisability interactions of the solvent system led to the preferential formation of active surfaces/surface sites on the CdS crystals.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tuning the Photocatalytic Activity of CdS Nanocrystals through Intermolecular Interactions in Ionic‐Liquid Solvent Systems

Lau

Water

Masters

et al. 2012

Chemistry A European J

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“…While malic and tartaric acids have already been reported as anions of some chiral ionic liquids, [23][24][25] the use of (S)-malic acid for the synthesis of chiral ionic liquids based on a chiral cation is unprecedented, to the best of our knowledge.…”

Section: N Bn Bnmentioning

confidence: 99%

Synthesis of novel enantiopure ionic liquids from (S)-malic acid

Bonanni¹,

Manuelli²,

Goti³

et al. 2013

Arkivoc

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“…TBAAsp IL was fabricated following a modified procedure reported previously [26] (Scheme 1a). A solution of L-asparagine amino acid (2.64 g, 20 mmol) in 20 ml of distilled water was ultrasonicated for 20-30 min at room temperature to give an aqueous suspension.…”

Section: Preparation Of Tbaasp Ilmentioning

confidence: 99%