Intelligent Biomimetic Chameleon Skin with Excellent Self-Healing and Electrochromic Properties

Zheng, Rongzong; Wang, Yi; Jia, Chunyang; Wan, Zhongquan; Luo, Junsheng; Malik, Haseeb Ashraf; Weng, Xiaolong; Xie, Jianliang; Deng, Longjiang

doi:10.1021/acsami.8b13249

Cited by 71 publications

(45 citation statements)

References 30 publications

(54 reference statements)

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“…In recent times, inspired by "Chameleons" for self-healing nature of their damaged skin tissue and ability to adjust their skin colour, very recently Zheng et.al [185] 2018, designed the bifunctional DFTPA-PI-MA copolymer film possessing chameleons like biomimetic properties by integrating electrochromic diphenylamine and self-healing DA groups into the polymer matrix, as shown in Figure 19. The authors concluded that the electroactive TPA group and the reversible DA cross-linking imparted electrochromic and self-healing performance in a single film with a fast switching for color response and excellent self-healing efficiency of about 90%.…”

Section: Diels-alder (Da) Reactionmentioning

confidence: 99%

Design Principles of Interfacial Dynamic Bonds in Self‐Healing Materials: What are the Parameters?

Sattar

Patnaik

2020

Chemistry An Asian Journal

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Polymers and polymer nanocomposites (PNCs) are extensively used in daily life. However, the growing requirement of advanced PNCs laid persistent environmental issues due to deformation‐induced damage that once formed, does not vanish at future stages. Therefore, self‐healing materials with significantly enhanced long life and safety have been designed to epitomize the forefront of recent advances in materials chemistry and engineering. Self‐healing PNC (SH‐PNCs) materials are a class of smart composites in which nanoparticles induce interfacial reconstruction via multiple covalent and non‐covalent interactions culminating in improved mechanical strength and self‐healing capability. However, since the filler nanoparticles are independent of the reversible supramolecular network, the filler incorporation destroys the self‐healing ability but could enhance the mechanical strength. Hence, the molecular parameters controlling the alliance of robust mechanical strength with virtuous self‐healing ability is a crucial challenge. Herein, we review the latest developments that have been made in self‐healing materials and puts advancing insights into the fabrication of SH‐PNCs in which the combination of covalent bonds and non‐covalent interactions provides an optimal balance between their mechanical performance and self‐healing capability. We highlight the importance of specific entropic, enthalpic changes, polymer chain conformations and flexibility that enable the reconstruction of damaged surface and physical reshuffling of dynamic bonds at the interface of cut surfaces.

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Section: Diels-alder (Da) Reactionmentioning

confidence: 99%

Design Principles of Interfacial Dynamic Bonds in Self‐Healing Materials: What are the Parameters?

Sattar

Patnaik

2020

Chemistry An Asian Journal

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“…Although the previously described systems are very useful for displaying information for soft robots, it is crucial for the color-changing devices to self-heal as the above-described systems experience large deformation constantly. Inspired by the chameleon, self-healable and stretchable color-changing devices based on photonic elastomer [276] or electrochromic devices [277] were developed, using self-healing substrates to achieve the self-recovery upon damage.…”

Section: Display Screen and Lightingmentioning

confidence: 99%

Progress and Roadmap for Intelligent Self‐Healing Materials in Autonomous Robotics

et al. 2020

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self-repair in order to survive and thrive. Soft to hard tissues can self-regenerate when injured, including the skin and bones. [6] Some of the living tissues, such as nails and bones, can even continuously remodeling themselves, removing the damaged tissues unintentionally and replaced by newly grown tissues. However, unlike regenerative and remodeling capabilities in nature, robots are made from nonliving synthetic materials such as polymers and metals. Hence, as we develop robots to have greater autonomy and capabilities, having the ability to self-heal or self-repair is becoming more critical, if not, essential, especially from an environmental sustainability point of view. [2,[7][8][9][10][11] The term self-healing materials, also often referred to as self-mending or selfrepairing materials, are materials that can regain some or most of its original material properties when damaged. In synthetic materials, the self-healing materials repair their damage without regenerative origins. As these selfhealing materials undergo self-repair, they regain their original intended functions through the recovery of the desired material properties, without an increase in original mass.As the number of self-healing materials is growing at a rapid clip, we first establish a brief history in this review to help the reader gain a broader perspective on self-healing materials. We emphasize on self-healing materials that recover their mechanical properties, because mechanical properties often dictate the possible applications. Figure 1 highlights the various selfhealing materials from high modulus to low modulus materials that can be used for robotic applications.There are two broad classifications for self-healing materials: a) autonomic versus nonautonomic self-healing materials; b) intrinsic versus extrinsic self-healing. [8] These self-healing materials can recover their properties either autonomously, i.e., without significant external intervention, much like human tissues; or they can also heal with external intervention, such as when some external environment changes cause temperature increment or via various triggers such as mechanical stimuli. Intrinsic self-healing materials do not need external healing agents, while extrinsic self-healing materials contain external healing agents for the healing of the matrix materials. In addition to those classifications, we will provide new insights on classifying these materials further into this review.In Section 2, we discuss various types of smart biomimetic robots where self-healing materials can be beneficial. Section 3 Robots are increasingly assisting humans in performing various tasks. Like special agents with elite skills, they can venture to distant locations and adverse environments, such as the deep sea and outer space. Micro/nanobots can also act as intrabody agents for healthcare applications. Self-healing materials that can autonomously perform repair functions are useful to address the unpredictability of the environment and the increasing drive toward the autonom...

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“…Electrochromic triphenylamine and self‐healing Diels–Alder groups were copolymerized to provide electrochromic, and self‐healing properties like an intelligent “chameleon skin.” [ 67 ] However, the transparency of the device was poor and the color contrast was too low to be applied in a smart window.…”

Section: Electrochromism In Conjugated Polymersmentioning

confidence: 99%

Electrochromic Conjugated Polymers for Multifunctional Smart Windows with Integrative Functionalities

Kim

Rémond

Kim

et al. 2020

Adv Materials Technologies

120

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In the advent of next‐generation smart windows, materials play a multifunctional role, providing not only a pleasant environment for humans but also energy‐efficient buildings and transportation. To this ends, smart windows tend to integrate multiple functions with the purpose of controlling external or sunlight input, self‐power functionality, and display functionality. Among the several chromogenic mechanisms, electrochromic methods are fast and simple to control. Here, the recent electrochromic research on the integration of different functionalities is reviewed. Efforts toward the combination of functionalities have led to synergetic and technical breakthroughs over the years. These include development of new electrochromic polymers by main chain, as well as, side chain engineering, morphology and assembly control, and nanostructurization. In this context, electrochemical principles for smart windows offer easier integration of functionalities due to the integrative principles in common working mechanisms for color, energy, and information carrier controls. Some examples of multifunction devices are electrochromic capacitive windows, self‐powered smart windows, and electrochromic‐luminescent windows. Herein, discussed are the electrochromism from polymers and the electrochemically driven smart windows with two or more functionalities, which give rise to an innovative material with cooperative functions, featuring energy storage, energy generation, or light emission.

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Intelligent Biomimetic Chameleon Skin with Excellent Self-Healing and Electrochromic Properties

Cited by 71 publications

References 30 publications

Design Principles of Interfacial Dynamic Bonds in Self‐Healing Materials: What are the Parameters?

Design Principles of Interfacial Dynamic Bonds in Self‐Healing Materials: What are the Parameters?

Progress and Roadmap for Intelligent Self‐Healing Materials in Autonomous Robotics

Electrochromic Conjugated Polymers for Multifunctional Smart Windows with Integrative Functionalities

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