Dynamic and mechanically robust and ultrafast healable ionogel for nerve fiber-inspired signal transmitter

Liu, Ping; Pei, Danfeng; Wu, Yongpeng; Li, Mingjie; Zhao, Xihui; Li, Chaoxu

doi:10.1039/d2ta06884b

Cited by 15 publications

(12 citation statements)

References 49 publications

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“…Visible light irradiation can also be used to activate the diselenide metathesis, as illustrated in Figure S9. The stress relaxation analysis in Figures A and S10 revealed the photoresponsive nature of diselenide bonds . It could be seen that stress relaxation was promoted by the high density of photo irradiation (480 nm in wavelength).…”

Section: Resultsmentioning

confidence: 95%

“…Rheological analysis in Figure 2C showed an obvious decline of loss (storage) modulus at ∼120 °C, being consistent to the rapid metathesis of diselenide bonds at elevated temperature reported in the literature. 30,31,36 The thermal responsive of diselenide bonds could also be identified by stress relaxation analysis in Figure S5. As the temperature rose, the stress relaxation rate increased dramatically.…”

Section: Synthesis Of Polydomain Lcesementioning

confidence: 99%

“…The stress relaxation analysis in Figures 3A and S10 revealed the photoresponsive nature of diselenide bonds. 36 It could be seen that stress relaxation was promoted by the high density of photo irradiation (480 nm in wavelength). In analogy to thermal metathesis of diselenide bonds, this photoresponsivity also endowed P-LCESe x with self-healing and photoplastic properties.…”

Section: Synthesis Of Polydomain Lcesementioning

confidence: 99%

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Tough and Photo-Plastic Liquid Crystal Elastomer with a 2-Fold Dynamic Linker for Artificial Muscles

Wu,

Pei,

Wei

et al. 2023

ACS Appl. Mater. Interfaces

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Liquid crystal elastomers (LCEs) have been optimized by combining cross-linkers and dynamic bonds to achieve a reversible actuation behavior comparable to living skeletal muscles. In this study, one unique type of segment with 2-fold dynamic properties was introduced into LCEs, which offered not only dynamic diselenide covalent bonds for thermo-/photoplasticity but also H-bond arrays for dynamic cross-linking and mechanical robustness. Besides selfhealing, self-welding, and recyclability, the LCEs were reprogrammable with elevated temperature or intensive visible light irradiation. The resultant LCEs gave an actuation blocking stress of 1.96 MPa and an elastic modulus of 14.4 MPa at 80 °C. The actuation work capacity reached 135.2 kJ m −3 . When incorporating the Joule electrode or photothermal materials, the LCEs could be programmed as the electricity-driven and photothermal artificial muscles and thereby promised the application both as a biomimetic artificial hand and as an energy collector from sunlight. Thus, the 2-fold dynamic LCEs offered the pathway of enabling the reversible actuation behavior comparable to living skeletal muscles and promising applications in sustainable actuators, artificial muscles, and soft robots.

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Section: Resultsmentioning

confidence: 95%

Section: Synthesis Of Polydomain Lcesementioning

confidence: 99%

Section: Synthesis Of Polydomain Lcesementioning

confidence: 99%

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Tough and Photo-Plastic Liquid Crystal Elastomer with a 2-Fold Dynamic Linker for Artificial Muscles

Wu,

Pei,

Wei

et al. 2023

ACS Appl. Mater. Interfaces

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“…As indicated, the low-hysteresis property and ionic conductivity of EA-PR-IL-100% stand out compared with similar gel systems. [26,[56][57][58][59][60][61][62][63][64][65] Subsequently, to figure out the resistance change of the ionogel during stretching process, the resistance test during stretching process was implemented. As indicated in Figure 4b, the relative change of resistance was almost linear with the tensile strain and the GF (gauge factor) was ≈0.5, indicating that the ionogel can be deemed as a desirable candidate for strain sensing materials.…”

Section: Resultsmentioning

confidence: 99%

A Low‐Hysteresis and Highly Stretchable Ionogel Enabled by Well Dispersed Slidable Cross‐Linker for Rapid Human‐Machine Interaction

Bao

Zhu

et al. 2023

Adv Funct Materials

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Ionic conductive soft materials for mimicking human skin are a promising topic since they can be thought of as a possible basis for biomimetic sensing. In pursuit of devices with a long working range and low signal delay, conductive materials with low hysteresis and good stretchability are highly demanded. To overcome the challenges of highly stretchable conductive materials with good resilience, herein a chemical design is proposed where polyrotaxanes act as topological cross-linkers to enhance the stretchability by sliding-induced reduced stress concentration while the compatible ionic liquid is introduced as a dispersant for low hysteresis. The obtained ionogels exhibit versatile properties more than low hysteresis (residual strain = 7%) and good stretchability (550%), and also anti-fatigue, biocompatibility, and good adhesion. The low hysteresis is attributed to lower energy dissipation from the well-dispersed polyrotaxanes by compatible ionic liquids. The mechanism provides a new insight in fabricating highly stretchable and low-hysteresis slide-ring materials. Furthermore, the conductivity of the ionogels and their responses to strains and temperatures are measured. Benefiting from the good conductivity and low hysteresis, the ionogel is applied to develop a wireless communication system to realize rapid human-machine interactions.

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“…In the case of gel materials, this compression performance is excellent. Similarly, we tested the mechanical properties of the WPAM x -IL([EBIM]Br) ionogels 3,4,6,8,13,[26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] The details are listed in ESI, † Table S3. Error bars show the standard deviation from three independent samples.…”

Section: Mechanical Properties Of Pam X -Il([ebim]br) Ionogelsmentioning

confidence: 99%

Preparation of tough and stiff ionogels via phase separation

Xie,

Li,

et al. 2024

Mater. Horiz.

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Dynamic and mechanically robust and ultrafast healable ionogel for nerve fiber-inspired signal transmitter

Abstract: Mechanical robustness in combination of ultrafast healablity has been in pursuit for soft conductors in applications of flexible electronics. Inspired by the unique dense H-bond arrays in spider silk and...

Cited by 15 publications

References 49 publications

Tough and Photo-Plastic Liquid Crystal Elastomer with a 2-Fold Dynamic Linker for Artificial Muscles

Tough and Photo-Plastic Liquid Crystal Elastomer with a 2-Fold Dynamic Linker for Artificial Muscles

A Low‐Hysteresis and Highly Stretchable Ionogel Enabled by Well Dispersed Slidable Cross‐Linker for Rapid Human‐Machine Interaction

Preparation of tough and stiff ionogels via phase separation

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