Dynamic Chemistry of Selenium: Se–N and Se–Se Dynamic Covalent Bonds in Polymeric Systems

Ji, Shaobo; Xia, Jiahao; Xu, Huaping

doi:10.1021/acsmacrolett.5b00849

Cited by 109 publications

(72 citation statements)

References 30 publications

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“…Our previous work proved that diselenide bond is a new kind of dynamic covalent bond 57. The low bond energy, which is 172 kJ mol −1 ,58 makes diselenides possible to undergo exchange under the irradiation of visible light without catalyst 59,60. Compared with other DCBs, the diselenide metathesis has a variety of advantages including rapid reaction rate, mild condition, and few by‐products 61.…”

Section: Methodsmentioning

confidence: 99%

“…[57] The low bond energy, which is 172 kJ mol −1 , [58] makes diselenides possible to undergo exchange under the irradiation of visible light without catalyst. [59,60] Compared with other DCBs, the diselenide metathesis has a variety of advantages including rapid reaction rate, mild condition, and few by-products. [61] When introduced into material, the diselenide bond can be used for stress relaxation under visible light which endows materials with self-healing, [62] photo plasticity, [63] 3D topographical features, [64] surface modification, [65] etc.…”

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confidence: 99%

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Tunable Structural Color Patterns Based on the Visible‐Light‐Responsive Dynamic Diselenide Metathesis

et al. 2020

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Structural color materials with reversible stimuli‐responsiveness to external environment have been widely used in sensors, encryption, display, and other fields. Compared with other stimuli, visible light is highly controllable both temporally and spatially with less damage to materials, which is more suitable for structural color patterning. Herein, a new diselenide‐containing shape memory material is prepared and used for creating patterns via visible light stimulus. In this system, the structural color originates from birefringence of stretched materials, whose shapes can be fixed while maintaining the mechanical stress. The fixed stress can be released by diselenide metathesis under visible light irradiation. By regulating the wavelength or irradiation time with a commercial projector, the pattern with tunable structural colors is realized and the structural color pattern can be erased and rewritten arbitrarily. During the patterning process, the optical signal is first stored as mechanical signal and then transformed back to optical signal. It is a new method for preparing visible‐light‐responsive structural color material and has great potential in display devices, anticounterfeiting labels, and data storage.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

Tunable Structural Color Patterns Based on the Visible‐Light‐Responsive Dynamic Diselenide Metathesis

et al. 2020

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“…An interesting extension of the sulfur based chemistry was the recently reported work on the dynamic characteristics of selenium chemistry . Selenium, due to its atomic structure, shares similar chemical properties with sulfur, more importantly, milder stimulation (e.g.…”

Section: Dynamic Covalent Chemistrymentioning

confidence: 99%

Dynamic Covalent Polymer Networks: from Old Chemistry to Modern Day Innovations

et al. 2017

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Dynamic covalent polymer networks have long been recognized. With the initial focus on the unintended impact of dynamic covalent linkages on the viscoelasticity of commercial rubbers, efforts in modern times have transitioned into designing dynamic covalent polymer networks with unique adaptive properties. Whereas self-healing and thermoset reprocessing have been the primary motivations for studying dynamic covalent polymer networks, the recent discovery of the vitrimeric rheological behavior and solid-state plasticity for this type of material have opened up new opportunities in material innovations. This, coupled with the revelation of the dynamic characteristics of commercially relevant polymer building blocks such as esters and urethanes, suggests a promising future for this class of materials.

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“…The use of disulfide bonds through this approach thus allows for precise control and a high synthetic flexibility, but although the use of UV‐light was shown to have a modest impact on interface performance, the use of visible light to exchange surface modifications further broadens the applicability. Diselenide bonds, e.g., have been shown to efficiently undergo metathesis with rapid recombination under visible light irradiation without the use of additional catalysts, showing further promise for bioapplications . Recently, Xia et al have demonstrated their dynamic functionality at various interfaces, including ITO on glass, PDMS and quartz surfaces, showing reversible exchange of selenide surface modifications under visible light irradiation (Figure C) .…”

Section: Responsive Wettabilitymentioning

confidence: 99%

Design of Active Interfaces Using Responsive Molecular Components

2019

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Responsive interfaces are interfaces that show a defined and reversible change in physical properties in response to external stimuli. Typically, responsive interfaces result from the immobilization of responsive molecular components at the interface that translate a nanoscale signal into a macroscopic effect. Responsive interfaces can also be obtained if the topology of the interface can be reversibly changed using an external stimulus. As the surface of any material is its connection to the environment, responsive interfaces provide opportunities for interactive materials which are not only able to change properties upon demand, but also sense their environment and act autonomously. The application of responsive molecular components at interfaces, however, requires chemical and physical compatibility with the material surface of interest, posing a challenge not least in the retention of the responsive functionality. The state of the art in "active" interfaces which display responsive wettability, permeability, or adhesion is discussed, with a particular emphasis on microscale and nanoscale patterning since patterned interfaces can give rise to unique material properties. Finally, perspectives in the development of responsive interfaces, as well as promising approaches for bypassing the most prominent challenges are discussed.

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Dynamic Chemistry of Selenium: Se–N and Se–Se Dynamic Covalent Bonds in Polymeric Systems

Cited by 109 publications

References 30 publications

Tunable Structural Color Patterns Based on the Visible‐Light‐Responsive Dynamic Diselenide Metathesis

Tunable Structural Color Patterns Based on the Visible‐Light‐Responsive Dynamic Diselenide Metathesis

Dynamic Covalent Polymer Networks: from Old Chemistry to Modern Day Innovations

Design of Active Interfaces Using Responsive Molecular Components

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