Recent Advances in Organogels and Their Applications

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Applications".

Deadline for manuscript submissions: closed (15 February 2024) | Viewed by 2401

Special Issue Editors


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Guest Editor
Dipartimento di Chimica Giacomo Ciamician, Università di Bologna, 2-40126 Bologna, Italy
Interests: organic chemistry; sustainable peptide materials; controlled release; water remediation
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Dipartimento di Chimica Giacomo Ciamician, Università di Bologna, 2-40126 Bologna, Italy
Interests: self-assembled peptide gelators; low molecular weight gels; applications in cosmetics; drug delivery; water remediation; multicomponent systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Gels have gained increasing attention due to the high demand for fundamental research and practical applications. Gels are solid materials consisting of at least one substantially cross-linked network (including networks derived from polymers and low-molecular-weight gelators) and one liquid. Depending on different liquid parts, the gels can be classified into hydrogels, organogels, ionogels, or hybrid gels, in which water, organic solvents, ionic liquids, and hybrid solvents are the dispersion media, respectively. The versatility of gels allows them to be applicable in many emerging and diverse application fields. 

In this Special Issue, we will focus on recent advances in organogels, which are gels formulated with organic liquid phases, and are distinguished from hydrogels (i.e., gels infiltrated with water/aqueous solutions in a three-dimensional network). Owing to their inherent semi-solid property, organogels manifest various unique characteristics, such as surface lubricity and anti-drying capacity, arousing particular interests in diverse practical applications. Organogels may also be made from solutions of proteins, polymers or fatty acids in oil. The macromolecular species crystallize, or assemble, into mesh structures that inhibit oil flow, thus producing edible oleogels that may be used for the formulation of cosmetic products or as fat replacement in foods, as examples.

Papers describing the most recent progress in emerging applications of organogels, including anti-icing, anti-fouling, droplet manipulation, drug delivery, food processing, etc., are welcomed in this Special Issue.

Prof. Dr. Claudia Tomasini
Dr. Demetra Giuri
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 submissions that pass pre-check are 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. Gels is an international peer-reviewed open access monthly 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 2100 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

  • organogels
  • smart materials
  • controlled delivery
  • oleogels
  • anti-icing agents
  • anti-fouling agents

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Published Papers (1 paper)

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Research

12 pages, 4302 KiB  
Article
Controlled Lactonization of o-Coumaric Esters Mediated by Supramolecular Gels
by Fabia Cenciarelli, Giuseppe Falini, Demetra Giuri and Claudia Tomasini
Gels 2023, 9(4), 350; https://doi.org/10.3390/gels9040350 - 21 Apr 2023
Cited by 4 | Viewed by 1780
Abstract
Fragrances are volatile organic compounds widely used in our daily life. Unfortunately, the high volatility required to reach human receptors reduces their persistency in the air. To contrast this effect, several strategies may be used. Among them, we present here the combination of [...] Read more.
Fragrances are volatile organic compounds widely used in our daily life. Unfortunately, the high volatility required to reach human receptors reduces their persistency in the air. To contrast this effect, several strategies may be used. Among them, we present here the combination of two techniques: the microencapsulation in supramolecular gels and the use of profragrances. We report a study on the controlled lactonization of four esters derived from o-coumaric acid. The ester lactonization spontaneously occurs after exposure to solar light, releasing coumarin and the corresponding alcohol. To determine the rate of fragrance release, we compared the reaction in solution and in a supramolecular gel and we demonstrated that the lactonization reaction always occurs slower in the gel. We also studied the more suitable gel for this aim, by comparing the properties of two supramolecular gels obtained with the gelator Boc-L-DOPA(Bn)2-OH in a 1:1 ethanol/water mixture in different gelator concentration (0.2% and 1% w/v). The gel prepared with 1% w/v gelator concentration is stronger and less transparent than the other and was used for the profragrances encapsulation. In any case, we obtained a significative reduction of lactonization reaction in gel, compared with the same reaction in solution. Full article
(This article belongs to the Special Issue Recent Advances in Organogels and Their Applications)
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