Ionic Liquids Properties And Applications
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Ionic Liquids: Properties and Applications
Author: Francesca D’Anna
language: en
Publisher: Frontiers Media SA
Release Date: 2019-10-17
Sustainability, defined as the way to meet the needs of the present generation without compromising the ability of future ones to meet their own, is one of the main challenges of modern society. Within this context, chemistry plays a significant role, and solvent nature as well as its environmental impact are pivotal issues frequently addressed. Ionic liquids, i.e. organic salts that have melting temperatures lower than 100 °C, have been frequently hailed as alternatives to conventional organic solvents. Their greenness has been mainly ascribed to their low vapor pressure and flammability. However, in addition to this, their high solubilizing ability and low miscibility with conventional organic solvents frequently allow for reducing the amount used, as well as for their recycling. Ionic liquids, especially the ones featured by aromatic cations, are frequently described as “polymeric supramolecular fluids” constructed through the establishment of feeble but cooperative supramolecular interactions like Coulomb and π-π interactions, as well as hydrogen bonds. In general, ionic liquids are also indicated as “designer solvents” as it is possible to tailor their features to specific applications by simply modifying their cation or anion structure. In this way, small changes in the ion’s structure can give rise to solvents showing very different properties. The above premises widely justify the growing interest in the properties and applications of ionic liquids, seen in recent literature (according to Scopus, more than 27,000 papers published in the last five years have “ionic liquids” as a keyword). Thanks to their properties, they have been variously used as solvent media, solvents for the obtainment of gel phases, components in the building of dye-sensitized solar cells, media for the preparation of thermochromic materials, etc. This Research Topic aims to present how structural features can determine not only the properties of ionic liquids, but also their possible employment. In this latter case, the interest arises from their ability to affect the outcome of a given reaction in terms of rate, yield, and nature of the products obtained for general use in the field of materials chemistry. This article collection is dedicated to Prof. Kenneth R. Seddon for his outstanding contribution to the formation and development of the ionic liquids community.
Green Solvents I
Author: Ali Mohammad
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-03-13
The conventional solvents used in chemical, pharmaceutical, biomedical and separation processes represent a great challenge to green chemistry because of their toxicity and flammability. Since the beginning of “the 12 Principles of Green Chemistry” in 1998, a general effort has been made to replace conventional solvents with environmentally benign substitutes. Water has been the most popular choice so far, followed by ionic liquids, surfactant, supercritical fluids, fluorous solvents, liquid polymers, bio-solvents and switchable solvent systems. Green Solvents Volume I and II provides a throughout overview of the different types of solvents and discusses their extensive applications in fields such as extraction, organic synthesis, biocatalytic processes, production of fine chemicals, removal of hydrogen sulphide, biochemical transformations, composite material, energy storage devices and polymers. These volumes are written by leading international experts and cover all possible aspects of green solvents’ properties and applications available in today’s literature. Green Solvents Volume I and II is an invaluable guide to scientists, R&D industrial specialists, researchers, upper-level undergraduates and graduate students, Ph.D. scholars, college and university professors working in the field of chemistry and biochemistry.
Advanced Applications of Ionic Liquids
Advanced Applications of Ionic Liquids discusses the intersection of nanotechnology with ionic liquids (ILs) and materials, along with opportunities for advanced engineering applications in various research fields. Novel materials at nano scales with ILs creates an upsurge in the thermal and electrochemical constancy of the nano scale particles, making them ideal for industrial applications. The implementation of ILs at nano scale includes an interaction of constituents, which is beneficial for electron transfer reactions. These new composites can be implemented as sensors, electronics, catalysts and photonics. Including ILs in polymer composites enhance electrochemical consistency, govern particle size, upsurge conductivity, reduce toxicity, and more. This book is a comprehensive reference for researchers working with IL based technologies for environmental and energy applications. - Covers all industrial aspects and advanced applications of ionic liquids (ILs) - Discusses the advanced applications of ILs across multiple fields, including industrial chemistry and chemical engineering - Includes a discussion of the use of ionic liquids in functional polymers, with applications for catalysis, energy conservation, sensors, and more