Visible‐Light‐Induced Self‐Healing Diselenide‐Containing Polyurethane Elastomer

Ji, Shaobo; Cao, Wei; Yu, Ying; Xu, Huaping

doi:10.1002/adma.201503661

Cited by 337 publications

(253 citation statements)

References 64 publications

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“…At least, laser-induced nanocapsule disintegration and transformation may be exploited for the contactless remote-controlled transformation of LM and replace traditional contact-dependent electrical stimulation6 or the passive oxidation-reduction treatment of cells10. In addition, this light-promoted disintegration and transformation of LMs would be useful for laser welding technology48, targeted connecting for the transected nerves1631 and electronics49 and non-contact wiring on electrodes of flexible diagnostic devices50 by a highly focused continuous wave (CW) laser beam with low power. We also consider that rapid morphological changings of laser-driven LM nanocapsules is promising for active drug delivery system in comparison to the slow and passive transformable properties410 of previous reported LM nanocomplexes under an acidic condition.…”

Section: Resultsmentioning

confidence: 99%

“…This knowledge could be, especially, very useful for the development of nanoscale stimulators, such as power sources for deep brain stimulation and optical biotelemetry, and the creation of unique cell therapies and tissue engineering. Finally, we believe the dramatic morphological changes to LM triggered by NIR irradiation could also be used for light-induced wiring on electrical devices4849 and light-driven self-healing materials50 in addition to the improvement of biomedical theranostic effects for various disease treatment and care.…”

Section: Discussionmentioning

confidence: 99%

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Light-driven liquid metal nanotransformers for biomedical theranostics

et al. 2017

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Room temperature liquid metals (LMs) represent a class of emerging multifunctional materials with attractive novel properties. Here, we show that photopolymerized LMs present a unique nanoscale capsule structure characterized by high water dispersibility and low toxicity. We also demonstrate that the LM nanocapsule generates heat and reactive oxygen species under biologically neutral near-infrared (NIR) laser irradiation. Concomitantly, NIR laser exposure induces a transformation in LM shape, destruction of the nanocapsules, contactless controlled release of the loaded drugs, optical manipulations of a microfluidic blood vessel model and spatiotemporal targeted marking for X-ray-enhanced imaging in biological organs and a living mouse. By exploiting the physicochemical properties of LMs, we achieve effective cancer cell elimination and control of intercellular calcium ion flux. In addition, LMs display a photoacoustic effect in living animals during NIR laser treatment, making this system a powerful tool for bioimaging.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Light-driven liquid metal nanotransformers for biomedical theranostics

et al. 2017

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“…Meanwhile, efforts were made to achieve autonomic healing free of manual intervention under visible light. Polymers containing reversible thiuram disulfide 19 and diselenide 20 bonds proved to be self-healable with tabletop lamp.…”

Section: Introductionmentioning

confidence: 99%

Sunlight driven self-healing, reshaping and recycling of a robust, transparent and yellowing-resistant polymer

2016

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† Electronic Supplementary Information (ESI) available: FTIR spectra, Raman spectrum, 1 H NMR spectra, UV-visible spectra, mass spectrum, HPLC spectra, DSC heating curves, tensile stress-strain curves, effect of exposure time of xenon lamp light on Young's modulus, and tabulated mechanical properties and healing efficiencies. See For realizing sunlight stimulated self-healing, a crosslinked polyurethane carrying disulfide in the main chain is synthesized. Its macromolecular composition and architecture are optimized so that the included disulfide bonds can take part in exchange reaction simply under illumination of the low concentration UV component of sunlight. Accordingly, the damaged polymer is allowed to be repeatedly healed in the sun in terms of strength restoration as a result of phototriggered reversible exchange of disulfide bonds. Meanwhile, the elaborately introduced hydrogen bonding helps to quickly close crack, favoring intimate contacts of cracked surface and subsequent interaction of dangling chains across the interface, and eventually raising effectiveness of photo-reaction of the disulfide bonds in solid phase. In addition, networks rearrangement due to disulfide exchange enables multiple recycling and reshaping of the polymer under sunshine. The present proof-of-concept work would be hopefully developed into a cost-effective and environmentally friendly technology of design, fabrication and application of smart photo-sensitive polymer with higher mechanical strength.

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“…[223,224] Extensive work has been done to demonstrate self-healing dielectric material [225] and gels, [226,227] however it is challenging to fabricate a self-healing current collector for the realization of a completely self-healing transparent and stretchable electronic device. It is extremely difficult to achieve selfhealing ability with electronic conductors.…”

Section: Challenges and Outlookmentioning

confidence: 99%

“…Meanwhile, the ionic conductor can be easily tuned to repair itself while sustaining its transparency, stretchability, and ionic conductivity. One way to realize a self-healing ionic conductor is by using a polymer matrix comprised of bonds that are stable and reversible such as dynamic covalent bonds [223,224] and hydrogen bonds. [231,232] Cao et al reported highly self-healing STIC using ion-dipole interactions.…”

Section: Challenges and Outlookmentioning

confidence: 99%

Deformable and Transparent Ionic and Electronic Conductors for Soft Energy Devices

Park

Parida

Lee

2017

Advanced Energy Materials

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The recent boom in deformable or stretchable electronics, flexible transparent displays/screens, and their integration into the human body has facilitated the development of multifunctional energy devices that are stretchable, transparent, wearable, and/or biocompatible while meeting the energy or power requirements. The development of soft energy systems begins with the preparation of relevant conductors and the design of innovative device configurations. In this study, recent advances and trends in stretchable and transparent electronic and ionic conductors are reviewed coupled with the growing efforts to use them for soft energy storage and conversion systems. Stretchable transparent ionic conductors present possibilities for use as current collectors and electrolytes in soft electronic/energy devices, providing novel insight into biofriendly systems for an effective human–machine interaction. Moreover, representative examples that demonstrate soft energy devices based on stretchable transparent ionic/electronic conductors are discussed in detail. Furthermore, the challenges and perspectives of developing novel stretchable transparent conductors and device configurations with tailored features are also considered.

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Visible‐Light‐Induced Self‐Healing Diselenide‐Containing Polyurethane Elastomer

Cited by 337 publications

References 64 publications

Light-driven liquid metal nanotransformers for biomedical theranostics

Light-driven liquid metal nanotransformers for biomedical theranostics

Sunlight driven self-healing, reshaping and recycling of a robust, transparent and yellowing-resistant polymer

Deformable and Transparent Ionic and Electronic Conductors for Soft Energy Devices

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