Eutectic solvents and low molecular weight gelators for next-generation supramolecular eutectogels: a sustainable chemistry perspective

de Araujo Lima e Souza, Giselle; Di Pietro, Maria Enrica; Mele, Andrea

doi:10.1039/d3su00264k

Cited by 7 publications

(3 citation statements)

References 157 publications

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“…These materials rely on non-covalent interactions, such as hydrogen bonding, electrostatic interactions, van der Waals forces, and π-π stacking, to form organic ionic gels. However, their utility is limited by the temperature range and mechanical properties within which they remain functional [164,165].…”

Section: Low Molecular Weight Gelatormentioning

confidence: 99%

Conductive Gels for Energy Storage, Conversion, and Generation: Materials Design Strategies, Properties, and Applications

Bari,

Jeong,

Barai

2024

Materials

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Gel-based materials have garnered significant interest in recent years, primarily due to their remarkable structural flexibility, ease of modulation, and cost-effective synthesis methodologies. Specifically, polymer-based conductive gels, characterized by their unique conjugated structures incorporating both localized sigma and pi bonds, have emerged as materials of choice for a wide range of applications. These gels demonstrate an exceptional integration of solid and liquid phases within a three-dimensional matrix, further enhanced by the incorporation of conductive nanofillers. This unique composition endows them with a versatility that finds application across a diverse array of fields, including wearable energy devices, health monitoring systems, robotics, and devices designed for interactive human-body integration. The multifunctional nature of gel materials is evidenced by their inherent stretchability, self-healing capabilities, and conductivity (both ionic and electrical), alongside their multidimensional properties. However, the integration of these multidimensional properties into a single gel material, tailored to meet specific mechanical and chemical requirements across various applications, presents a significant challenge. This review aims to shed light on the current advancements in gel materials, with a particular focus on their application in various devices. Additionally, it critically assesses the limitations inherent in current material design strategies and proposes potential avenues for future research, particularly in the realm of conductive gels for energy applications.

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Section: Low Molecular Weight Gelatormentioning

confidence: 99%

Conductive Gels for Energy Storage, Conversion, and Generation: Materials Design Strategies, Properties, and Applications

Bari,

Jeong,

Barai

2024

Materials

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“…Electron microscopy reveals that gel formation is attributed to the existence of three-dimensional nanofibrillar network structures with diameters ranging from 10 to 100 nm. DBS is a derivative of the natural sugar alcohol d -glucitol and is considered to be low in toxicity and environmentally friendly. − As a result, DBS gels have numerous applications in the pharmaceutical, cosmetics, and food industries, as well as in drug delivery systems and personal care products. − For instance, in pharmaceuticals, these gels can be used as stimuli-responsive drug delivery systems for the controlled release of commonly used anti-inflammatory, pain-relief, and lipid-lowering medications due to their low toxicity. , …”

Section: Introductionmentioning

confidence: 99%

Green Polymer Electrolytes Prepared by a Cost-Effective Approach

Lai,

Liu,

Tseng

2024

Langmuir

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The preparation of solid polymer electrolytes (SPEs) using poly(ethylene oxide) (PEO) typically involves incorporating fillers or undergoing chemical modifications to reduce crystallinity and enhance conductivity. PEO with a lower molecular weight, known as polyethylene glycol (PEG), exhibits higher conductivity, despite weaker mechanical strength. It is commonly employed as a plasticizer to improve the conductivity of SPEs or to fabricate PEG-based gel polymer electrolytes (GPEs). In this study, we use a straightforward approach to create innovative SPEs by blending liquid polymer electrolytes (LPEs), particularly low-molecular-weight polyethylene glycol (PEG), with a molecular weight of 400 g/mol, and sustainable poly(L-lactide) (PLLA). Solid PEG/PLLA forms are achieved by introducing 30 wt % of PLLA. Subsequently, the addition of lithium salts results in the development of novel PEG/PLLA SPEs. Another focal point of this study involves incorporating 1,3:2,4-dibenzylidene sorbitol (DBS) into these PEG/PLLA systems. DBS, an organic gelator derived from natural sugars, demonstrates self-assembly, leading to the formation of a nanofibrillar network structure. Leveraging DBS's ability to form organogels in liquid organic environments, we facilitate the transformation of low PLLA content LPEs into innovative solvent-free GPEs. Our prepared PEG/PLLA SPEs exhibited a maximum conductivity value of 4.39 × 10 −5 S/cm, approximately five times higher than that of neat PEG (10000 g/mol) SPEs. The ionic conductivity exhibited a declining trend as the content of PLLA and DBS increased. However, there was an improvement in electrochemical stability. Furthermore, the incorporation of PLLA and DBS into electrolytes contributed to enhanced mechanical support and stability within the electrolyte layer. This, in turn, mitigated capacity decay and improved the cycling performance of assembled lithium-ion cells.

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“…In recent years, researchers have highlighted and analyzed the progress and strategies in the development of novel iono-and eutectogelator molecules, contributing to the generation of new soft ionic materials, [4,29,30] particularly in the field of bioelectronics. Special emphasis has been given to LMW ionogelators [31] and eutectogelators, [32] where reports on supramolecular self-assembly remain limited (Figure 2), and associated with serendipity. To the best of our knowledge, there is no report associated with the rational designed of LMW supramolecular gels in non-conventional solvents, ILs or DESs.…”

Section: Introductionmentioning

confidence: 99%

Short Peptide and Amino Acid‐Based Supramolecular Ionogels and Eutectogels

Esteves,

Roque

2024

Chemistry A European J

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The capability of peptide and amino acid‐based molecules to act as ionogelators and eutectogelators entrapping ionic liquids (ILs) and deep eutectic solvents (DESs) forming ionogels and eutectogels has gathered attention in recent decades. The self‐assembly process, primarily driven by non‐covalent interactions as hydrogen bonding, remains serendipitous in nature. This review provides a comprehensive and detailed report on self‐assembly of unmodified and modified amino acids and peptides in the non‐conventional solvents, ILs and DESs. Understanding these processes holds great promise for the development of innovative soft‐materials, and to the progress of supramolecular systems in non‐conventional solvent environments.

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Eutectic solvents and low molecular weight gelators for next-generation supramolecular eutectogels: a sustainable chemistry perspective

Abstract: Immobilization of eutectic mixtures in supramolecular gels formed using low molecular weight gelators is a smart strategy to expand their design space. Advances in the last five years are reviewed from the viewpoint of sustainability.

Cited by 7 publications

References 157 publications

Conductive Gels for Energy Storage, Conversion, and Generation: Materials Design Strategies, Properties, and Applications

Conductive Gels for Energy Storage, Conversion, and Generation: Materials Design Strategies, Properties, and Applications

Green Polymer Electrolytes Prepared by a Cost-Effective Approach

Short Peptide and Amino Acid‐Based Supramolecular Ionogels and Eutectogels

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