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1. Chiral Eutectic Mixtures and Deep Eutectic Solvents for Induced Circularly Polarized Luminescence

   https://doi.org/10.1002/cptc.202100139  

   Nelson, Brian ; VandenElzen, Liam ; Whitacre, Grace ; Hopkins, Todd A. ( September 2021 , ChemPhotoChem)

   Deep eutectic solvents (DES) or eutectic mixtures prepared with a chiral component can lead to new chiral solvents with applications that include asymmetric synthesis and chiral light emitting materials. DES have low melting points, because of strong interactions, such as hydrogen bonding, between components of the mixture. Mixtures are prepared with ammonium salts, tetrabutylammonium chloride ([TBA]Cl) and choline chloride ([Ch]Cl), as hydrogen bond acceptor (HBA) and L‐lactic acid, L‐leucic acid, L‐ascorbic acid, R/S‐acetoxypropionic acid, and methyl‐(S)‐lactate as chiral hydrogen bond donors (HBD). Eight combinations of the HBAs and HBDs were prepared, and a racemic mixture of dissymmetric chiral europium complexes was dissolved in the mixtures. The circularly polarized luminescence (CPL) spectra were measured to determine the chiral discrimination by these chiral solvents. The CPL spectra show that the handedness of the chiral HBD is important to the chiral discrimination exhibited. However, the inversion of the sign of the CPL spectra in 1 : 3 [TBA]Cl:L‐lactic acid vs. 1 : 3 [Ch]Cl:L‐lactic acid, and 1 : 1.5 [Ch]Cl:L‐leucic acid vs. 1 : 1 [TBA]Cl:L‐leucic acid shows that the achiral HBA also plays a critical role in the handedness of the chiral discrimination by the chiral solvent.

    

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2. Exploring multicomponent eutectic alloys along an univariant eutectic line

   https://doi.org/10.1016/j.msea.2023.145136  

   Jin, Xi ; Xue, Zan ; Mao, Zhouzhu ; Guo, Ruipeng ; Wang, Xuejiao ; Shi, Xiaohui ; Yin, Shaochun ; Zhang, Min ; Lan, Aidong ; Liaw, Peter K. ; et al ( June 2023 , Materials Science and Engineering: A)
3. Comparing the extraction performance of cyclodextrin-containing supramolecular deep eutectic solvents versus conventional deep eutectic solvents by headspace single drop microextraction

   https://doi.org/10.1016/j.chroma.2021.462588  

   Farooq, Muhammad Qamar ; Zeger, Victoria R. ; Anderson, Jared L. ( November 2021 , Journal of Chromatography A)
4. Reversible Zinc Electrodeposition at −60 °C Using a Deep Eutectic Electrolyte for Low-Temperature Zinc Metal Batteries

   https://doi.org/10.1021/acs.jpclett.3c00150  

   Hawkins, Brendan E. ; Schoetz, Theresa ; Gordon, Leo W. ; KT, Surabh ; Wang, Jonah ; Messinger, Robert J. ( February 2023 , The Journal of Physical Chemistry Letters)
5. Influence of Hydrogen Bond Donor Identity and Intentional Water Addition on the Properties of Gelatin-Supported Deep Eutectic Solvent Gels

   https://doi.org/10.1021/acs.jpcb.0c03361  

   Owyeung, Rachel E. ; Sonkusale, Sameer R. ; Panzer, Matthew J. ( July 2020 , The Journal of Physical Chemistry B)

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