The thermal and physicochemical properties of protic ionic liquids (PILs) are reported. It is highly evident that there has been an extensive range of alkylammonium, imidazolium, and heterocyclic cations paired with many organic and inorganic anions that have been employed to prepare PILs. There has been strong interest in modifying the properties of PILs through the addition of water or other molecular solvents. For many applications, the presence of some water in the PILs is not detrimental, and instead leads to enhanced solvent properties such as lower viscosity, higher conductivities, and lower melting points. It remains an issue of definition though of how to refer to these resulting protic solutions. There is also an ongoing difficulty surrounding how to describe the proton activity in the PILs, analogous to pH in aqueous systems. For a broad range of applications, it has been reported that the acidity/basicity of the PIL or PIL-solvent system is crucial for their beneficial properties. It is expected that the fundamental properties of PILs will continue to be explored, along with continued interest in many existing and new applications, such as in electrochemistry, organic and inorganic synthesis, and biological applications. In particular, there has been a significant interest in a broad- range of PILs for use as electrolytes and incorporation in polymer electrolytes for fuel cells, and other energy storage devices.

Protic Ionic Liquids: Evolving Structure–Property Relationships and Expanding Applications

Nine plants were screened for potential antibacterial activity. In evaluating antibacterial activity both aqueous and organic solvents were used. The plants screened were Sapindus emarginatus, Hibiscus rosa-sinensis, Mirabilis jalapa, Rheo discolor, Nyctanthes arbortristis, Colocasia esculenta, Gracilaria corticata, Dictyota spps., and Pulicaria wightiana. Antibacterial activity was tested against 6 bacterial strains, Pseudomonas testosteroni, Staphylococcus epidermidis, Klebsiella pneumoniae, Bacillus subtilis, Proteus morganii, and Micrococcus flavus. Two methods, Agar disk diffusion and Agar ditch diffusion, were used to study the antibacterial activity of all these plants. Ps. testosteroni and K. pneumoniae were the most resistant bacterial strains. S. emarginatus showed strong activity against the tested bacterial strains. Therefore, this can be selected for further investigation to determine its therapeutic potential. Its leaf extract can also be used as a lead molecule in combating the diseases caused by the bacterial strains studied.

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Antibacterial Activity of Some Selected Indian Medicinal Flora

https://rua.ua.es/dspace/bitstream/10045/62171/5/2016_Alonso_etal_EurJOC_rev.pdf

Deep Eutectic Solvents: The Organic Reaction Medium of the Century

Heteropolyanion‐Based Ionic Liquids: Reaction‐Induced Self‐Separation Catalysts for Esterification

Synthesis and characterization of chitosan and silver loaded chitosan nanoparticles for bioactive polyester

This study describes the antibacterial activity of the pure isolates from Piper longum (L.) (black pepper) and Taxus baccata (L.) (Yew). Three isolates of black pepper were active against Gram-posi...

P. Srinivasa Reddy

Papers

Antibacterial Activity of Isolates from Piper longum and Taxus baccata

Liquid–liquid biphasic synthesis of long chain wax esters using the Lewis acidic ionic liquid choline chloride·2ZnCl2

Reductive amination of carbonyl compounds using NaBH4 in a Brønsted acidic ionic liquid

An efficient and chemoselective Brønsted acidic ionic liquid-catalyzed N-Boc protection of amines

Microbial transformation of Δ915-africanene