Deep eutectic solvents: designer fluids for chemical processes

Abstract

The increasing demand for multi‐task green solvents has spurred the development of next‐generation liquid media such as deep eutectic solvents (DESs), which have recently attracted increased attention. DESs are mixtures of salts and complexing agents, having freezing points lower than those of starting individual components. Similarly to ionic liquids, DESs exhibit distinctive properties such as chemical and thermal stability, biodegradability, non‐flammability, and cost effectiveness. These features account for their wide range of applications, e.g. as extractants, reactants, catalysts, reaction media, additives, and lubricants. This review summarizes the recent research efforts directed at exploring the potential applications of DESs in various chemical processes. With the rapid publication of reports on this new generation of solvents, other roles also are expected to be seen sooner or later. © 2017 Society of Chemical Industry

A Pure 2H‐MoS2 Nanosheet‐Based Memristor with Low Power Consumption and Linear Multilevel Storage for Artificial Synapse Emulator

“…A relatively new type of ionic solution, DES, is desirable due to its simple preparation, low toxicity, and biological compatibility. [22][23][24] However, it is difficult to obtain MoS 2 nanosheets by DES intercalation alone ( Figure S1, Supporting Information). Therefore, the BSA was used for the second exfoliation step to obtain pure 2H-phase MoS 2 nanosheets.…”

A chemo-enzymatic tandem reaction in a mixture of deep eutectic solvent and water in continuous flow

“…Therefore, a well thought-out process and post-process treatment of DESs and it mixtures with water is required in order to get DES into industrial application. 20,21 Nevertheless, an impressive series of chemical 22,23 and enzymatic [24][25][26] reactions and also flow applications [27][28][29] were successfully conducted in DESs. We have recently shown the feasibility to combine the enzymatic decarboxylation of hydroxycinnamic acids catalyzed by phenolic acid decarboxylase from Bacillus subtilis (BsPAD) in water and Ru-catalyzed homo-coupling in organic solvents in a one-pot reaction for the synthesis of a series of bio-based stilbene derivatives.…”

CO2‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits

“…The properties of DESs are strongly dominated by the HBs' networks between the anions of the salts and HBDs acting as complexing agents (CAs) and can be tuned by a broad possibility of integration of diverse salts and HBDs as well as stoichiometry . DESs have comprehensive applications as reaction media or reagents in electrodeposition of metals, polymeric materials synthesis, nanotechnology, and extraction and separation of target compounds such as biodiesel, aromatic hydrocarbons, and bioactive compounds . In terms of gas separation, in addition to the mostly investigated CO 2 capture and sweetening, DESs are merged with Cu + or Ag + carriers to fabricate facilitated transport membranes (FTMs) for olefin/paraffin separation …”