Mechanically Robust and Multifunctional Ionogels Based on Cellulose and Polymerizable 1-Butyl-3-Methylimidazolium Chloride/Acrylamide Deep Eutectic Solvent

Dry ionic conductive elastomers based on polymeric deep eutectic solvents for bioelectronics

“…Other innovative recently proposed PDES formulations rely on the mixture of neutral monomers and ionic liquid salts, although technically, the resulting elastomers deserve the label of ionogels and will not be discussed in detail here. For instance, Ji et al prepared PDES by mixing AA ( T g ranging from −40 to −22 °C) 99 or AAm ( T g = −64 °C) 100 with 1-butyl-3-methylimidazolium chloride, an ionic liquid with a melting point of 70 °C.…”

Transparent, Stretchable, Underwater Self-Healing, Self-Adhesive, and Recyclable Eutectogels Enabled by Poly(Ionic Liquid)/Eutectic Networks

“…To circumvent the potential leakage problems, polymerizable IL monomers have been used to develop ionogels with stable properties. − However, their strong electrostatic interaction leads to the prepared polymer networks with high mechanical strength, low deformability, and poor ionic conductivity. In order to modulate the poly­(IL) networks, we note that deep eutectic solvents (DESs) consisting of hydrogen bond donors and hydrogen bond acceptors have a wide range of performance tunability. − DES is a mixture of two or more pure compounds for which the eutectic point temperature is below that of an ideal liquid mixture, presenting significant negative deviations from ideality. − As an emerging solvent, DESs have attracted much attention in the preparation of functional materials in recent years. − DESs and ILs share similar physical and chemical properties, such as low vapor pressure, chemical stability, nonflammability, and potential as green solvents . Therefore, researchers have now developed a variety of functional eutectogels based on DES systems, but most of them are based on hydrophilic systems. − Considering the disadvantages of the water sensitivity of conventional hydrophilic eutectogels, researchers have developed hydrophobic eutectogels.…”

A Tough and Reusable Ionogel Adhesive for Flexible Strain Sensor

“…An ionic liquid (IL) is a type of ion compound composed of cations and anions. − It is characterized by the distinctive chemical structure which imparts several advantageous properties including high ionic conductivity, good thermal stability, , excellent chemical stability, nonvolatility, low melting point, and low vapor pressure. ,, These attributes facilitate rich cation–anion interactions within ionogels prepared from ionic liquid or polyelectrolyte liquids, enabling electrostatic interactions with substrate surfaces , as well as various noncovalent interactions such as ion–dipole interactions. , Moreover, a diverse range of cations and anions can be employed to engineer ionic liquids with distinctive chemical structures, thereby conferring upon ionogels high ionic liquid content and unique properties such as ionic conductivity, thermal stability, and a broad electrochemical window. , These attributes render high-ionic-liquid-content ionogels promising candidates as a generation of multifunctional, high-performance adhesives. − Rong et al designed an ionogel adhesive prepared using 1-vinyl-3-butylimidazole bis­(trifluoro­methyl­sulfonyl)­imide as a polymeric monomer can adhere stably, with an adhesion force of up to 0.4 MPa and an ion conductivity of 1 × 10 –5 S/m . Wu et al used fluorinated ionic polymer to prepare an ionogel adhesive that can realize underwater self-healing, and its adhesion force reached 0.7 MPa .…”