Ultrafast fabrication of deep eutectic solvent flexible ionic gel with high-transmittance, freeze-resistant and conductivity by frontal polymerization

Li, Xiao Yu; Yan, Mingkai; Xiao, Jun; Lian, Hailan

doi:10.1016/j.jcis.2023.07.038

Cited by 18 publications

(1 citation statement)

References 42 publications

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“…(g) A photograph of a 2 mm wide and 0.8 mm thick DGel-A 90 G 20 easily supporting a 500 g weight. (h) Comparison graph of the performance of this work with the reported literature. − …”

Section: Resultsmentioning

confidence: 93%

Ultrastrength High-Sensitivity Poly(acrylic acid)-Based Deep Eutectic Solvents Gel for Wearable Strain Sensing and Human Health Monitoring

Liu,

Chen,

Wang

et al. 2024

ACS Appl. Polym. Mater.

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Flexible sensing materials play a pivotal role in realizing human−machine interfaces, biomedical electronic applications, and robust wearable sensors. Deep eutectic solvents (DES), as eco-friendly alternatives to ionic liquids, have garnered considerable attention. However, achieving both high strength and sensitivity in DES gel (DGel) poses a formidable challenge. In this study, we present a method for producing DGel with high strength and sensitivity, utilizing poly(acrylic acid) (PAA). The resulting DGels demonstrate a satisfactory tensile strength (approximately 17.17 MPa) and impressive elongation (approximately 329.2%). Most notably, these meticulously engineered DGels exhibit a notable high sensitivity (GF = 16.14) across a strain range of 0.1% to 200%. The DGel also exhibits adequate cyclic stability and durability, making them ideal candidates for strain sensors with outstanding electromechanical performance. The exceptional strength of DGel arises from a combination of chemical and physical cross-linking within the gel structure. Additionally, DGel can be easily integrated into wearable sensors, holding substantial potential for the development of next-generation high-performance flexible electronic devices.

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“…(g) A photograph of a 2 mm wide and 0.8 mm thick DGel-A 90 G 20 easily supporting a 500 g weight. (h) Comparison graph of the performance of this work with the reported literature. − …”

Section: Resultsmentioning

confidence: 93%

Ultrastrength High-Sensitivity Poly(acrylic acid)-Based Deep Eutectic Solvents Gel for Wearable Strain Sensing and Human Health Monitoring

Liu,

Chen,

Wang

et al. 2024

ACS Appl. Polym. Mater.

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Transparent, Highly Stretchable, Self‐Healing, Adhesive, Freezing‐Tolerant, and Swelling‐Resistant Multifunctional Hydrogels for Underwater Motion Detection and Information Transmission

Zhang,

Yao,

Raffa

2024

Adv Funct Materials

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Conductive hydrogels have emerged as fascinating materials for flexible electronics because of their integrated conductivity, mechanical flexibility, and the possibility to introduce several smart functions. However, the swelling of hydrogels in aqueous environments significantly reduces their applicability where contact with water is unavoidable. In this study, a physically cross‐linked composite hydrogel is proposed, that is transparent, highly stretchable, anti‐swelling, capable of autonomous self‐healing, adhesive, and anti‐freezing. The hydrogel is synthesized through a simple one‐step photopolymerization in a novel deep eutectic solvent (DES)/water system. Dynamic physical interactions, including hydrophobic interaction, hydrogen bonding, and electrostatic interactions, confer remarkable transparency (92%), self‐healing capability (up to 94%), good adhesion to a wide array of substrates (91 to 199 kPa), high toughness (1.46 MJ m−3), excellent elongation at break (up to 2064%), and resistance to swelling in water (equilibrium swelling ratio of 3% in water for 30 days) even in solutions at different pH (pH 1–11), and in other solvents. The incorporation of a DES contributes to exceptional anti‐freezing performance. The transparent sensor achieves multifunctional sensing and human motion detection with high sensitivity and stability. Notably, the sensor demonstrates information transmission underwater through stretching and pressing, showcasing its immense potential in underwater flexible devices.

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Bioinspired Superstrong, Wet Adhesive Deep Eutectic Solvent‐Based Gels for Stain Sensing and ECG Monitoring

Yang,

Zhang,

Zhao

et al. 2024

Adv Materials Technologies

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Low mechanical properties and easy detachment from the hydration layer at the wet interface of hydrogel limit its application as an adhesive‐flexible sensor. In this study, the composition and structure of mussel mucoprotein are replicated using sulfonyl betaine (SBMA) containing zwitterion and N‐hydroxyethyl acrylamide to be polymerized in deep eutectic solvents and integrated with a polydopamine network to create a bionic eutectic gel with exceptionally strong and wet adhesion. Water erosion is effectively inhibited by the extensive hydrogen bond and electrostatic interactions. These dynamic bonds also impart self‐healing properties to the gel, showing a self‐healing efficiency of 55.45% after 48 h healing at room temperature. The zwitterion in SBMA can preferentially react with water to form a hydrated shell to protect the hydrogen bonds and enhance the exceptional water resistance and adhesion of the gel. The peel strength of the gel on a wet substrate is up to 220.71 N m−1, and its tensile strength can reach 1.01 MPa. It also has good mass stability at both low and high temperatures. This eutectic gel has the potential to be used in flexible electronic devices and can detect human movement and bioelectrical impulses on wet skin with great sensitivity.

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Ultrafast fabrication of deep eutectic solvent flexible ionic gel with high-transmittance, freeze-resistant and conductivity by frontal polymerization

Cited by 18 publications

References 42 publications

Ultrastrength High-Sensitivity Poly(acrylic acid)-Based Deep Eutectic Solvents Gel for Wearable Strain Sensing and Human Health Monitoring

Ultrastrength High-Sensitivity Poly(acrylic acid)-Based Deep Eutectic Solvents Gel for Wearable Strain Sensing and Human Health Monitoring

Transparent, Highly Stretchable, Self‐Healing, Adhesive, Freezing‐Tolerant, and Swelling‐Resistant Multifunctional Hydrogels for Underwater Motion Detection and Information Transmission

Bioinspired Superstrong, Wet Adhesive Deep Eutectic Solvent‐Based Gels for Stain Sensing and ECG Monitoring

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