Effects of water and methanol on the molecular organization of 1-butyl-3-methylimidazolium tetrafluoroborate as functions of pressure and concentration

The role of viscosity in various dynamical processes of different fluorophores in ionic liquid–cosolvent mixtures: a femtosecond fluorescence upconversion study

Literature reports provide ample evidence of the dynamical studies of various fluorophores in different room-temperature ionic liquid (RTIL)–cosolvent mixtures.

Biological Activity of Ionic Liquids and Their Application in Pharmaceutics and Medicine

Ionic liquids are remarkable chemical compounds, which find applications in many areas of modern science. Because of their highly tunable nature and exceptional properties, ionic liquids have become essential players in the fields of synthesis and catalysis, extraction, electrochemistry, analytics, biotechnology, etc. Apart from physical and chemical features of ionic liquids, their high biological activity has been attracting significant attention from biochemists, ecologists, and medical scientists. This Review is dedicated to biological activities of ionic liquids, with a special emphasis on their potential employment in pharmaceutics and medicine. The accumulated data on the biological activity of ionic liquids, including their antimicrobial and cytotoxic properties, are discussed in view of possible applications in drug synthesis and drug delivery systems. Dedicated attention is given to a novel active pharmaceutical ingredient-ionic liquid (API-IL) concept, which suggests using traditional drugs in the form of ionic liquid species. The main aim of this Review is to attract a broad audience of chemical, biological, and medical scientists to study advantages of ionic liquid pharmaceutics. Overall, the discussed data highlight the importance of the research direction defined as "Ioliomics", studies of ions in liquids in modern chemistry, biology, and medicine.

A new insight into the nanostructure of alkylammonium alkanoates based ionic liquids in water

In this paper, small angle X-ray scattering has been used to study a series of ionic liquids, alkylammonium alkanoates ([N_{0 0 0 n}][C_mCO₂]), with varying alkyl chain lengths in the cation and the anion.

Molecular level interactions in binary mixtures of 1-ethyl 3-methylimidazolium tetrafluoroborate and water

NIR spectroscopic analysis and DLS measurements were carried out to study hydrogen bonding and aggregation in ionic liquid–water binary mixtures.

Nanoparticles in ionic liquids: interactions and organization

Interactions between nanoparticles and ionic liquids can lead to a variety of organized structures.

Microscopic interactions of the imidazolium-based ionic liquid with molecular liquids depending on their electron-donicity

The hydrogen bonding between the C₂mim cation and DMSO.

Solvent nanostructure, the solvophobic effect and amphiphile self-assembly in ionic liquids

The ability of ionic liquids (ILs) to support amphiphile self-assembly into a range of mesophase structures has been established as a widespread phenomenon. From the ILs evaluated as self-assembly media, the vast majority have supported some lyotropic liquid crystal phase formation. Many neat ionic liquids have been shown to segregate into polar and non-polar domains to form a nanostructured liquid. A very strong correlation between the nanostructure of the ionic liquid and its characteristics as an amphiphile self-assembly solvent has been found. In this review we discuss ionic liquids as amphiphile self-assembly media, and identify trends that can be used to distinguish which ionic liquids are likely to have good promotion properties as self-assembly media. In particular these trends focus on the nanostructure of neat ionic liquids, their solvent cohesive energy density, and the related solvophobic effect. We forecast that many more ILs will be identified as amphiphile self-assembly solvents in the future.

The Hydrogen-Bonding Interactions between 1-Ethyl-3-Methylimidazolium Lactate Ionic Liquid and Methanol

1-Ethyl-3-Methylimidazolium lactate ([EMIM][LAC]) is an environmental friendly ionic liquid with potential industrial applications. Attenuated total reflectance infrared spectroscopy (ATR-IR) and density functional theory (DFT) calculations were employed to investigate the molecular interactions between methanol and [EMIM][LAC]. The infrared spectra were analyzed by two methods: excess spectroscopy and two-dimensional (2D) correlation spectroscopy. In the ATR-FTIR spectra, v(C4,5–H), v(C2–H), v(alkyl), v(–OD), and v(–COO) all show blue shifts upon addition of methanol. 2D correlation analysis indicated that the v(imidazolium ring C–H) band varies before that of v(alkyl C–H) with increasing CD3OD content. The following sequential order of interaction strength is established by DFT calculations: EMIM–methanol –LAC > EMIM–LAC > LAC–methanol > EMIM–methanol.

Insight into the Intermolecular Interactions in Ionic Liquid-Ethanol-Water Mixtures by Near-Infrared Spectroscopy

In this contribution, an insight into the interactions between 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4) and water/ethanol was offered using the Near-infrared (NIR) technique. It was found that the supermolecular structure of aqueous [Bmim]BF4 solution was destroyed as mole fraction of water surpasses 0.3979. The addition of ethanol is not favorable for water molecules to interacting with C2-H because of the competence of C2-H · · · O interactions with ethanol molecules, as well as the strong hydrogen-bond interactions between the BF4 − and the hydroxyls of the ethanol. Additionally, the most important is that both water and ethanol prefer to form hydrogen bonds with the proton H2 on imidazolium ring, rather than H4 and H5. These information would have important directive significance for studying the aggregation behavior and the structural organization of ILs in molecular solvents.