scholarly journals Task-specific ionic liquids: applications in sample preparation and the chemistry behind their selectivity

2022 ◽  
pp. 100004
Author(s):  
Mauricio Llaver ◽  
Emiliano F. Fiorentini ◽  
Pamela Y. Quintas ◽  
María N. Oviedo ◽  
María B. Botella Arenas ◽  
...  
2017 ◽  
Vol 41 (1) ◽  
pp. 209-235 ◽  
Author(s):  
Kevin D. Clark ◽  
Miranda N. Emaus ◽  
Marcelino Varona ◽  
Ashley N. Bowers ◽  
Jared L. Anderson

Separations ◽  
2021 ◽  
Vol 8 (9) ◽  
pp. 153
Author(s):  
Theodoros Chatzimitakos ◽  
Phoebe Anagnostou ◽  
Ioanna Constantinou ◽  
Kalliroi Dakidi ◽  
Constantine Stalikas

In the last decades, a myriad of materials has been synthesized and utilized for the development of sample preparation procedures. The use of their magnetic analogues has gained significant attention and many procedures have been developed using magnetic materials. In this context, the benefits of a new class of magnetic ionic liquids (MILs), as non-conventional solvents, have been reaped in sample preparation procedures. MILs combine the advantageous properties of ionic liquids along with the magnetic properties, creating an unsurpassed combination. Owing to their unique nature and inherent benefits, the number of published reports on sample preparation with MILs is increasing. This fact, along with the many different types of extraction procedures that are developed, suggests that this is a promising field of research. Advances in the field are achieved both by developing new MILs with better properties (showing either stronger response to external magnetic fields or tunable extractive properties) and by developing and/or combining methods, resulting in advanced ones. In this advancing field of research, a good understanding of the existing literature is needed. This review aims to provide a literature update on the current trends of MILs in different modes of sample preparation, along with the current limitations and the prospects of the field. The use of MILs in dispersive liquid–liquid microextraction, single drop microextraction, matrix solid-phase dispersion, etc., is discussed herein among others.


Separations ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 37 ◽  
Author(s):  
Adrián Gutiérrez-Serpa ◽  
Patricia I. Napolitano-Tabares ◽  
Jakub Šulc ◽  
Idaira Pacheco-Fernández ◽  
Verónica Pino

Ionic liquids (ILs) are a group of non-conventional salts with melting points below 100 °C. Apart from their negligible vapor pressure at room temperature, high thermal stability, and impressive solvation properties, ILs are characterized by their tunability. Given such nearly infinite combinations of cations and anions, and the easy modification of their structures, ILs with specific properties can be synthesized. These characteristics have attracted attention regarding their use as extraction phases in analytical sample preparation methods, particularly in liquid-phase extraction methods. Given the liquid nature of most common ILs, their incorporation in analytical sample preparation methods using solid sorbents requires the preparation of solid derivatives, such as polymeric ILs, or the combination of ILs with other materials to prepare solid IL-based composites. In this sense, many solid composites based on ILs have been prepared with improved features, including magnetic particles, carbonaceous materials, polymers, silica materials, and metal-organic frameworks, as additional materials forming the composites. This review aims to give an overview on the preparation and applications of IL-based composites in analytical sample preparation in the period 2017–2020, paying attention to the role of the IL material in those composites to understand the effect of the individual components in the sorbent.


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