TEMPO‐Contained Polymer Grafted onto Graphene Oxide via Click Chemistry as Cathode Materials for Organic Battery

Zhu, Junfeng; Zhu, Ting; Tuo, Huan; Yan, Mengmeng; Zhang, Wanbin; Zhang, Guanghua; Yang, Xiaoguang

doi:10.1002/macp.202000160

Cited by 5 publications

(5 citation statements)

References 42 publications

(40 reference statements)

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“…The creation of improved electronic materials relies on understanding the mechanisms responsible for charge-storage storage, [25][26][27][28][29][30][31][32][33] optoelectronics, [34][35][36] organic electronics, [7,37,38] and bioelectronics. [12,[39][40][41] Interestingly, the characterization of redox polymers often focuses on their conducting properties although some recent studies found that the addition of diffusible redox mediators can enhance their functional capacities (e.g., for charge storage and molecular memory).…”

Section: Introductionmentioning

confidence: 99%

“…[ 22–24 ] A second electron‐transfer mechanism involves reduction–oxidation (redox) reactions. Redox polymers offer such properties and have been used in applications that include energy storage, [ 25–33 ] optoelectronics, [ 34–36 ] organic electronics, [ 7,37,38 ] and bioelectronics. [ 12,39–41 ] Interestingly, the characterization of redox polymers often focuses on their conducting properties although some recent studies found that the addition of diffusible redox mediators can enhance their functional capacities (e.g., for charge storage and molecular memory).…”

Section: Introductionmentioning

confidence: 99%

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Characterizing Electron Flow through Catechol‐Graphene Composite Hydrogels

Kim

Argenziano

Zhao

et al. 2022

Adv Materials Inter

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and electron-transfer, and then controlling these mechanisms for user-defined purposes. For energy applications (e.g., capacitors and batteries), the focus is on storing large quantities of electrons and controlling their discharge. [1][2][3] For information processing applications (e.g., electronics), [4,5] materials are desired that can gate and rectify electron-flow. [6,7] Other applications focus on materials that offer state-dependent properties (e.g., optoelectronics) [8] or memory (e.g., memristors). [9] With the growing emphasis on safety and sustainability, and the expanding interest in life-science applications, there is an increasing interest in the development of electronic materials that function in aqueous systems. [10] In aqueous systems, electron-transfer is constrained by the solvent and typically occurs through at least two distinctly different mechanisms each of which favors different types of materials. [11][12][13] One electron-transfer mechanism is a metal-like conductivity. [14,15] Carbon-based nanomaterials have been especially important for conferring such conductivity [14,16] with benefits that include enhanced double layer charge storage for energy applications [17][18][19][20][21] and electrocatalytic properties for sensing applications. [22][23][24] A second electron-transfer mechanism involves reduction-oxidation (redox) reactions. Redox polymers offer such properties and have been used in applications that include energy Electronic materials that allow the controlled flow of electrons in aqueous media are required for emerging applications that require biocompatibility, safety, and/or sustainability. Here, a composite hydrogel film composed of graphene and catechol is electrofabricated, and that this composite offers synergistic properties is reported. Graphene confers metal-like conductivity and enables charge-storage through an electrical double layer mechanism. Catechol confers redox-activity and enables charge-storage through a redox mechanism. Importantly, there are two functional populations of catechols: conducting-catechols (presumably in intimate contact with graphene) allow direct electron-transfer; and non-conducting-catechols (presumably physically separated from graphene) require diffusible mediators to enable electrontransfer. Using a variety of spectroelectrochemical measurements, that the capacity of the composite for charge-storage increases in proportion to the extent by which the catechol-groups can undergo redox-state switching is demonstrated. To illustrate the broad relevance of this work, how the redoxstate switching can be related to both the charge storage of energy materials and the memory of molecular electronic materials is discussed. The authors believe this work is significant because it demonstrates that: conducting and redox-active components enable distinctly different mechanisms for chargestorage and electron-transfer; these components act synergistically; and mediators provide unique opportunities to extend the capabilities of electronic materials.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterizing Electron Flow through Catechol‐Graphene Composite Hydrogels

Kim

Argenziano

Zhao

et al. 2022

Adv Materials Inter

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“…The results indicated that in situ polymerization was a better method to prepare the polymer/carbon composites. Zhu et al [128] reported the construction of covalent bonds between the active material PTMA and conductive agent graphene oxide (GO) via the click chemistry. And the resultant PTMA-GO composite electrode exhibited 2.3 times higher capacity than the PTMA electrode, which further indicated the advantage of composite engineering.…”

Section: Composite Engineeringmentioning

confidence: 99%

Modulation of Radical Intermediates in Rechargeable Organic Batteries

Chen

Hussain

et al. 2023

Advanced Materials

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Organic materials have been considered as promising electrodes for next‐generation rechargeable batteries in view of their sustainability, structural flexibility, and potential recyclability. The radical intermediates generated during the redox process of organic electrodes have profound effect on the reversible capacity, operation voltage, rate performance, and cycling stability. However, the radicals are highly reactive and have very short lifetime during the redox of organic materials. Great efforts have been devoted to capturing and investigating the radical intermediates in organic electrodes. Herein, this review summarizes the importance, history, structures, and working principles of organic radicals in rechargeable batteries. More importantly, challenges and strategies to track and regulate the radicals in organic batteries are highlighted. Finally, further perspectives of organic radicals are proposed for the development of next‐generation high‐performance rechargeable organic batteries.This article is protected by copyright. All rights reserved

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“…Zhu et al introduced facile click chemistry assisted poly(2,2,6,6-tetramethylpiperidin-1-oxyl-4-yl methacrylate) graphene oxide composite (PTMA-GO) (47) assisted reaction in ambient conditions and utilized them as cathode materials (Figure 29) [97]. After completing 300 charge-discharge cycles,the specific capacity was found to be 2.3 times higher for this composite as compared to the PTMA electrode.…”

Section: Click Chemistry In Polymer Synthesismentioning

confidence: 99%

Role of Click Chemistry in Organic Synthesis

Sethiya¹,

Sahiba²,

Agarwal³

2021

Current Topics in Chirality - From Chemistry to Biology

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Click chemistry involves highly efficient organic reactions of two or more highly functionalized chemical entities under eco-benign conditions for the synthesis of different heterocycles. Several organic reactions such as nucleophilic ring-opening reactions, cyclo-additions, nucleophilic addition reactions, thiol-ene reactions, Diels Alder reactions, etc. are included in click reactions. These reactions have very important features i.e. high functional group tolerance, formation of a single product, high atom economy, high yielding, no need for column purification, etc. It also possesses several applications in drug discovery, supramolecular chemistry, material science, nanotechnology, etc. Being highly significant and valuable, we have elaborated on several aspects of click reactions in organic synthesis in this chapter. Recent advancements in the field of organic synthesis using click chemistry approach have been deliberated by citing last five years articles.

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TEMPO‐Contained Polymer Grafted onto Graphene Oxide via Click Chemistry as Cathode Materials for Organic Battery

Cited by 5 publications

References 42 publications

Characterizing Electron Flow through Catechol‐Graphene Composite Hydrogels

Characterizing Electron Flow through Catechol‐Graphene Composite Hydrogels

Modulation of Radical Intermediates in Rechargeable Organic Batteries

Role of Click Chemistry in Organic Synthesis

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