Special Issue "Applications of Deep Eutectic Solvents in Analytical Chemistry"

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemistry".

Deadline for manuscript submissions: closed (15 April 2021).

Special Issue Editors

Dr. Miguel Ángel Rodríguez Delgado
E-Mail Website
Guest Editor
Department of Analytical Chemistry, Nutrition and Food Science, University of La Laguna (ULL), Tenerife, Canary Islands, Spain
Interests: separation methods; miniaturised extraction techniques; chromatography; agro-alimentary analysis; endocrine disruptors; plastic migrants; pesticides; green chemistry
Dr. Bárbara Socas Rodríguez
E-Mail Website
Guest Editor
Institute of Food Science Research (CIAL). Spanish National Research Council (CSIC), Spain
Interests: miniaturised extraction techniques; chromatography; mass spectrometry; food analysis; endocrine disruptors; green chemistry; supercritical fluids

Special Issue Information

Dear Colleagues,

It is our pleasure to announce the next Applied Sciences Special Issue entitled “Applications of Deep Eutectic Solvents in Analytical Chemistry”, which will compile the most relevant applications of deep eutectic solvents (DES) in the field of analytical chemistry.

The current trends in analytical chemistry advocate the development of sustainable methodologies which have a minimal impact on environment and reduce or eliminate the use and generation of hazardous substances. In fact, the application of low-toxicity or nontoxic solvents such as DES and, most recently, natural DES (NADES) has become one of the most important actions. This new generation of green materials is constituted by at least two components, a hydrogen bond donor (HBD) and a hydrogen bond acceptor (HBA) that, when combined, produce a new substance with higher volatility than that of the initial reagents. DES and NADES presents variable and unique properties that make them excellent materials to be applied in many fields, including analytical chemistry. They have been used not only as solvents in sample preparation, but also as stationary phases and sensors components or as additives in mobile phases.

The aim of this publication is to present the most recent applications of DES and NADES in the area of analytical chemistry, as well as provide a wide and accurate overview of the recent advances and future trends in the field.

This Special Issue is supported by the Sample Preparation Study Group and Network, supported by the Division of Analytical Chemistry of the European Chemical Society.

Dr. Miguel Ángel Rodríguez Delgado
Dr. Bárbara Socas Rodríguez
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sustainable chemistry
  • deep eutectic solvents
  • extractions
  • analytical techniques
  • green solvents

Published Papers (3 papers)

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Research

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Communication
Deliquescence Behavior of Deep Eutectic Solvents
Appl. Sci. 2021, 11(4), 1601; https://doi.org/10.3390/app11041601 - 10 Feb 2021
Cited by 1 | Viewed by 535
Abstract
Deep eutectic solvents (DESs) are formed by a hydrogen bond donor and an acceptor. The hydrogen bond interactions between these two components significantly depress the melting temperature of the mixture. DESs have been used as an alternative for organic solvents in various branches [...] Read more.
Deep eutectic solvents (DESs) are formed by a hydrogen bond donor and an acceptor. The hydrogen bond interactions between these two components significantly depress the melting temperature of the mixture. DESs have been used as an alternative for organic solvents in various branches of the chemical industry. Many DESs are very hygroscopic and water is known to change the properties of DESs, but there has neven been a systematic study performed on the deliquesence behavior of DESs. Therefore, this study investigated the thermal and deliquescent behavior of four DESs. The DES mixtures were stored in desiccators at different relative humidities (RH) to investigate the critical RH (RH0) for deliquescence. It was found that, due to the formation of a eutonic mixture, the RH0 to induce deliquescence for a given DES mixture was lower compared to the individual components comprising the DES. The results showed that, even though all investigated DESs had eutectic melting temperatures above room temperature, but due to the low RH0, they were able to appear liquid at room temperature under ambient conditions. The eutonic and eutectic compositions were identified at different compositions for the DESs. The results emphasize that great care must be taken to control the process and storage conditions for DESs. Full article
(This article belongs to the Special Issue Applications of Deep Eutectic Solvents in Analytical Chemistry)
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Review

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Review
Deep Eutectic Solvents for the Extraction of Bioactive Compounds from Natural Sources and Agricultural By-Products
Appl. Sci. 2021, 11(11), 4897; https://doi.org/10.3390/app11114897 - 26 May 2021
Viewed by 633
Abstract
In this work, a review about the applicability of eutectic solvents, mainly deep eutectic solvents (DES) and natural deep eutectic solvents (NADES), for the extraction of bioactive compounds from natural products has been carried out. These alternative solvents have shown not only to [...] Read more.
In this work, a review about the applicability of eutectic solvents, mainly deep eutectic solvents (DES) and natural deep eutectic solvents (NADES), for the extraction of bioactive compounds from natural products has been carried out. These alternative solvents have shown not only to have high extraction yields but also to be environmentally friendly, exhibiting very low or almost no toxicity, compared to conventional organic solvents. The last trends and main extraction methods that have been most widely used in studies using these emerging solvents have been reviewed, as well as the varied natural sources in which they have been used, including agro-food by-products. Besides the toxicity, biodegradability of these solvents is reviewed. Likewise, different reported bioactivity tests have been included, in which extracts obtained with these ecological solvents have been tested from antioxidant activity analysis to in vivo studies with rats, through in vitro cytotoxicity tests. Full article
(This article belongs to the Special Issue Applications of Deep Eutectic Solvents in Analytical Chemistry)
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Review
Recent Applications of Deep Eutectic Solvents in Environmental Analysis
Appl. Sci. 2021, 11(11), 4779; https://doi.org/10.3390/app11114779 - 23 May 2021
Viewed by 373
Abstract
The incessant generation of toxic waste and the growing concern over the environment have led the scientific community to delve into the search for more sustainable systems. In this regard, the application of deep eutectic solvents (DESs) has become one of the main [...] Read more.
The incessant generation of toxic waste and the growing concern over the environment have led the scientific community to delve into the search for more sustainable systems. In this regard, the application of deep eutectic solvents (DESs) has become one of the main strategies in green chemistry. These solvents have emerged as a promising alternative to conventional toxic solvents and even to the well-known ionic liquids. Their unique properties, components availability, and easy preparation, among others, have led to a new trend within the scientific community and industry, based on the use of these up-and-coming solvents not only in science but also in quotidian life. Among the areas that have benefited from the advantages of DESs is analytical chemistry, in which they have been largely used for sample preparation, including the extraction and determination of organic and inorganic compounds from environmental samples. The considerable number of applications developed in the last year in this field and the increasing generation of new data necessitate the continuous updating of the literature. This review pretends to compile the most relevant applications of DESs in environmental analysis and critically discuss them to provide a global vision about the advantages and drawbacks/limitations of these neoteric solvents in the area of environmental analysis. Full article
(This article belongs to the Special Issue Applications of Deep Eutectic Solvents in Analytical Chemistry)
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