Repeatable Actuations of Organic Single Crystal Fibers Driven by Thermosalient‐Phase‐Transition‐Induced Buckling

Takazawa, Ken; Inoue, Jun‐ichi; Matsushita, Yoshitaka

doi:10.1002/smll.202204500

Cited by 6 publications

(3 citation statements)

References 42 publications

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“…In the future mastering our understanding of these interactions may lead to practical photosalient based devices similar to the recently demonstrated thermosalient analogues. 63,64 We expect that the findings of this study will contribute to the fields of crystal engineering and solid-state chemistry for designing future photofunctional materials.…”

Section: Discussionmentioning

confidence: 89%

Releasing a bound molecular spring with light: a visible light-triggered photosalient effect tied to polymorphism

McGehee,

Saito,

Kwaria

et al. 2024

Phys. Chem. Chem. Phys.

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Section: Discussionmentioning

confidence: 89%

Releasing a bound molecular spring with light: a visible light-triggered photosalient effect tied to polymorphism

McGehee,

Saito,

Kwaria

et al. 2024

Phys. Chem. Chem. Phys.

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“…Inspired by the extraordinary stimulus-responsive behavior of these natural systems, scientists and engineers have invested a great deal of effort in creating an immense variety of stimulus-responsive smart materials. − Compared with traditional materials such as polymers and hydrogels, organic crystalline materials are receiving more and more attentions due to their long-range order in structure, high energy transfer efficiency, molecular designability and rich characterizations of microstructures at the molecular level. − In recent years, researchers have developed various types of organic crystals that can respond to external stimuli such as force, light, and heat by twisting, rolling, jumping, , switching fluorescence, and splitting . These rich response forms show the potential of stimulus-responsive materials for applications in actuators, − information storage, sensors, flexible electronics, , etc.…”

Section: Introductionmentioning

confidence: 99%

Multistimulus-Responsive Cocrystals of Azobenzene Derivatives with Excellent Elastic Deformation Ability

Zhu,

Wei,

Chen

et al. 2024

Crystal Growth & Design

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Stimulus-responsive materials have promising potential applications like actuators, sensors, and flexible electronics, which are important for realizing multidimensional control and improving atomic utilization in future applications. Here, centimeter-scale cocrystals of azobenzene derivatives with excellent elastic deformation ability were designed and prepared. The obtained crystal exhibited a range of striking behaviors, such as cracking, curling, and jumping upon heating and cooling. The mechanism was investigated through detailed crystallographic analysis, experimental tests, and theoretical calculations. The results show that the π-stacking structure formed along the long axis endows the crystals with the ability to resist external forces through elastic deformation, and the anisotropic expansion and contraction of the lattice in response to temperature changes are the source of a series of thermal abrupt behaviors. Furthermore, the photoresponsive property of 4-((4-(propoxy)phenyl)diazenyl)pyridine (APOC) is inherited in the cocrystal, which could rapidly twist under UV illumination. Further simulation and characterization reveal that the bulk stress tilted to the long axis caused by photoisomerization of the host molecules leads to torsion of the crystal. Finally, we successfully applied the crystal as an optical switch in a circuit, taking advantage of its flexibility and photoresponsive properties.

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“…[26][27][28] When the volume expands, the twisted fiber can rotate rapidly, but almost no deformation occurs in the length direction. [29,30] For this twist-based technology, a large stretch drive can only be achieved by inserting a twist until a coil is formed. For a twisted fiber without a coil, the drive stroke is limited.…”

Section: Introductionmentioning

confidence: 99%

Programmable Water/Light Dual‐Responsive Hollow Hydrogel Fiber Actuator for Efficient Desalination with Anti‐Salt Accumulation

Liu

Luo

Huang³

et al. 2023

Adv Funct Materials

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An intelligent fiber actuator that can sense, adapt, and interact with environmental stimuli is highly desirable for numerous applications. However, conventional fiber sensors have difficulty in responding to complex environments with fast sensing and actuation. Herein, water/light dual‐responsive double‐twisted RGO@HHF (hollow hydrogel fiber loaded with reduced graphene oxide) actuators are successfully developed based on dynamic self‐contraction/elongation via twisting, folding, plying, and re‐plying process. Under stimuli by water and light, the twisted RGO@HHF provides a forward and reverse torsional stroke of 3168 and 60° cm−1, respectively. The excellent swelling properties endow the fiber with highly effective water‐responsive ability, and the hollow structure can reduce the water required for fiber to swell. Meanwhile, the RGO loading further accelerates water evaporation and enhances the light response rate of the fiber. After twisting and re‐plying, the double‐twisted RGO@HHF exhibits highly increased elongation and contraction under light/water stimulation. On this basis, a new strategy is proposed for efficient desalination and anti‐salt accumulation. The double‐twisted RGO@HHF can elongate to absorb water and contract to evaporate seawater under sunlight/water stimulation, respectively. The accumulated salt can be dissolved in the seawater during the dynamic process. This study provides a promising approach for realizing sustainable seawater desalination.

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Repeatable Actuations of Organic Single Crystal Fibers Driven by Thermosalient‐Phase‐Transition‐Induced Buckling

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.202204500.

Cited by 6 publications

References 42 publications

Releasing a bound molecular spring with light: a visible light-triggered photosalient effect tied to polymorphism

Releasing a bound molecular spring with light: a visible light-triggered photosalient effect tied to polymorphism

Multistimulus-Responsive Cocrystals of Azobenzene Derivatives with Excellent Elastic Deformation Ability

Programmable Water/Light Dual‐Responsive Hollow Hydrogel Fiber Actuator for Efficient Desalination with Anti‐Salt Accumulation

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