Effect of organic solvents on the conductivity of polyethylene glycol-based deep eutectic solvents

Chen, Yu; Fu, Li; Duan, Yaoting; Bai, Yue; Wang, Xin; Sun, Xuanchao; Liu, Cong; Zhang, Bingyang; Di, Zimeng

doi:10.1016/j.molliq.2021.117038

Cited by 12 publications

(2 citation statements)

References 39 publications

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“…PG is a naturally occurring polyphenol with low toxicity that has been widely used in photography, food, medicine, energy, and environmental fields. , Poly(ethylene glycol)s, available in a wide range of molecular weights, are considered green solvents due to their biocompatibility, low cost, negligible vapor pressure, and recyclability. , PG, with three adjacent hydroxyl groups on the benzene ring, is a white solid (Figure a), while PEG600, with 13–14 ethylene glycol units, is a transparent liquid at room temperature (Figure b). The freezing points obtained from the differential scanning calorimetry (DSC) curves of PG and PEG600 were 87.4 and 13.4 °C, respectively (Figure e and Table S1).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Dynamic Polyurethanes by Utilizing Low-Transition-Temperature Mixtures of Pyrogallol and Poly(ethylene glycol)

Wang,

Fu,

Liu

et al. 2024

ACS Appl. Polym. Mater.

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Dynamic covalent networks exhibit intriguing reprocessing and self-healing properties, but they usually require complex synthesis procedures and frequently use hazardous solvents. Herein, we proposed a green synthesis strategy for dynamic polyurethane that was conducted in a one-pot, solvent-free manner that addresses the aforementioned problems. A new type of low-transition-temperature mixture (LTTM) was prepared by blending pyrogallol and poly-(ethylene glycol), which allowed the reagents to remain as liquids at room temperature. The formation of LTTMs was ascribed to the presence of intermolecular hydrogen-bonding and van der Waals interactions between the molecules of the two reagents. Self-healing and reprocessable dynamic polyurethane with dissociative exchangeable phenol−carbamate bonds was synthesized by incorporating a hexamethylene diisocyanate trimer as the third component into the LTTMs, followed by thermal curing. The properties of the dynamic polyurethane could be adjusted by modifying the pyrogallol content in the LTTMs. The preparation of LTTMs and dynamic polyurethane did not require any purification steps and solvents, which provides an innovative approach to polymer synthesis that is efficient and environmentally friendly.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Dynamic Polyurethanes by Utilizing Low-Transition-Temperature Mixtures of Pyrogallol and Poly(ethylene glycol)

Wang,

Fu,

Liu

et al. 2024

ACS Appl. Polym. Mater.

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“…The choice of precursors (PEG200 and thiourea) to form the DES can be justified by previous reports. 18,19,21,26,33–37 The melting points of PEG200 and thiourea are −52 °C and 182 °C, respectively; however, PEG200 : thiourea (2 : 1) is eutectic, with a melting point of ca. 90 °C, as reported by Mu's group.…”

Section: Introductionmentioning

confidence: 99%

Room-temperature dissolution of PbI₂ by a PEGylated deep eutectic solvent with high efficiency

et al. 2022

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Breakthrough Conductivity Enhancement in Deep Eutectic Solvents via Grotthuss‐Type Proton Transport

Prado,

Robledo,

Hightower

et al. 2024

Adv Materials Inter

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There is an increasing demand for the development of ion‐conducting electrolytes for energy storage systems. Much attention is directed toward deep eutectic solvents as potential candidates. In the search for highly conductive systems, the possibility of designing deep eutectic solvents with Grotthuss‐type proton transport is widely overlooked. Herein, ethaline, a mixture of choline chloride and ethylene glycol is used in a 1:2 molar ratio, to induce a significant conductivity increase with the addition of water and sulfuric acid (H2SO4). The achieved breakthrough conductivity is analyzed experimentally and simulated with ab initio molecular dynamics (AIMD). At sufficient water content, an H‐bonding network is formed that leads to a significant breakthrough conductivity based on H2SO4‐derived proton transfer following the long‐established Grotthuss proton transport mechanism. This result is substantiated by the positive deviation from the ideal KCl line in the Walden plot. Specifically, the data series positioned above the reference line indicates a Grotthuss mechanism in action. The AIMD simulations demonstrate proton transfer between water and ethylene glycol, supported by simulation frames captured at various times.

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Effect of organic solvents on the conductivity of polyethylene glycol-based deep eutectic solvents

Cited by 12 publications

References 39 publications

Synthesis of Dynamic Polyurethanes by Utilizing Low-Transition-Temperature Mixtures of Pyrogallol and Poly(ethylene glycol)

Synthesis of Dynamic Polyurethanes by Utilizing Low-Transition-Temperature Mixtures of Pyrogallol and Poly(ethylene glycol)

Room-temperature dissolution of PbI₂ by a PEGylated deep eutectic solvent with high efficiency

Breakthrough Conductivity Enhancement in Deep Eutectic Solvents via Grotthuss‐Type Proton Transport

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Effect of organic solvents on the conductivity of polyethylene glycol-based deep eutectic solvents

Cited by 12 publications

References 39 publications

Synthesis of Dynamic Polyurethanes by Utilizing Low-Transition-Temperature Mixtures of Pyrogallol and Poly(ethylene glycol)

Synthesis of Dynamic Polyurethanes by Utilizing Low-Transition-Temperature Mixtures of Pyrogallol and Poly(ethylene glycol)

Room-temperature dissolution of PbI2 by a PEGylated deep eutectic solvent with high efficiency

Breakthrough Conductivity Enhancement in Deep Eutectic Solvents via Grotthuss‐Type Proton Transport

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Room-temperature dissolution of PbI₂ by a PEGylated deep eutectic solvent with high efficiency