The Addition of an Ultra‐Small Amount of Black Phosphorous Quantum Dots Endow Self‐Healing Polyurethane with a Biomimetic Intelligent Response

Zhong, Jiasong; Zhou, Yan; Tian, Xiaomin; Sun, Yinglu; Shi, Bingyu; Zhang, Zhenyu; Zhang, Wenhua; Liu, Xiangdong; Yang, Yuming

doi:10.1002/marc.202300286

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…Black phosphorus (BP), a layered semiconducting material, has a band gap that varies from 0.3 eV for bulk materials to 2.0 eV for phosphorene (monolayer BP), thereby enabling − a broad range of applications in phototherapy. − The gold standard procedure to obtain BP nanoflakes for bioimaging and phototherapy , is the liquid exfoliation method; however, it has recently been demonstrated that BP nanoflakes with reduced thickness and small lateral dimensions exhibit high reactivity with oxygen, particularly in the presence of water and accelerated when exposed to light. − A practical way to address this limitation involves coating the surface of BP flakes obtained by mechanical exfoliation with a thin film of poly(methyl methacrylate) (PMMA) or depositing a layer of aluminum oxide (Al 2 O 3 ) using the atomic layer deposition method. , In any case, all of the mentioned procedures involve the transfer of BP flakes onto an intermediate target substrate that requires subsequent removal. Additionally, these methods necessitate the use of a glovebox system for both the fabrication and transfer processes.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Transfer of Black Phosphorus on a Silk Fibroin Substrate: A Viable Method for Photoresponsive and Printable Biomaterials

Alunni Cardinali,

Ceccarini,

Chiesa

et al. 2024

ACS Omega

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Despite the technological importance of semiconductor black phosphorus (BP) in materials science, maintaining the stability of BP crystals in organic media and protecting them from environmental oxidation remains challenging. In this study, we present the synthesis of bulk BP and the exploitation of the viscoelastic properties of a regenerated silk fibroin (SF) film as a biocompatible substrate to transfer BP flakes, thereby preventing oxidation. A model based on the flow of polymers revealed that the applied flow-induced stresses exceed the yield stress of the BP aggregate. Raman spectroscopy was used to investigate the exfoliation efficiency as well as the environmental stability of BP transferred on the SF substrate. Notably, BP flakes transferred to the SF substrate demonstrated improved stability when SF was dissolved in a phosphate-buffered saline medium, and in vitro cancer cell viability experiments demonstrate the tumor ablation efficiency under visible to near-infrared (Vis−nIR) radiation. Moreover, the SF and BP-enriched SF (SF/BP) solution was shown to be processable via extrusion-based three-dimensional (3D) printing. Therefore, this work paves the way for a general method for the transferring of BP on natural biodegradable polymers and processing them via 3D printing toward novel functionalities and complex shapes for biomedical purposes.

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Section: Introductionmentioning

confidence: 99%

Mechanical Transfer of Black Phosphorus on a Silk Fibroin Substrate: A Viable Method for Photoresponsive and Printable Biomaterials

Alunni Cardinali,

Ceccarini,

Chiesa

et al. 2024

ACS Omega

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Strengthening‐Durable Trade‐Off and Self‐Healing, Recyclable Shape Memory Polyurethanes Enabled by Dynamic Boron–Urethane Bonds

Zhang,

Yang,

Cao

et al. 2024

Macromol. Rapid Commun.

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Addressing the demand for integrating strength and durability reinforcement in shape memory polyurethane (SMPU) for diverse applications remains a significant challenge. Here we synthesized a series of SMPUs with ultra‐high strength, self‐healing and recyclability, and excellent shape memory properties through introducing dynamic boron–urethane bonds. The introducing of boric acid (BA) to polyurethane leading to the formation of dynamic covalent bonds (DCB) boron‐urethane, that confer a robust cross‐linking structure on the SMPUs led to the formation of ordered stable hydrogen‐bonding network within the SMPUs. The flexible crosslinking with DCB represents a novel strategy for balancing the trade‐off between strength and durability, with their strengths reaching up to 82.2 MPa while also addressing the issue of durability in prolonged usage through the provision of self‐healing and recyclability. The self‐healing and recyclability of SMPU were demonstrated through rapid dynamic exchange reaction of boron‐urethane bonds, systematically investigated by dynamic mechanical analysis (DMA). This study sheds light on the essential role of such PU with self‐healing and recyclability, contributing to the extension of the PU's service life. The findings of this work provide a general strategy for overcoming traditional trade‐offs in preparing SMPUs with both high strength and good durability.This article is protected by copyright. All rights reserved

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A Review of Self-Healing Polymers for Lithium Batteries: from Mechanistic Insight to Application

Sun,

Wang,

Cao

et al. 2024

SEE

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Review A Review of Self-Healing Polymers for Lithium Batteries: From Mechanistic Insight to Application Qiyue Sun, Yongyin Wang, Qiaoying Cao *, Hang Hu, Mingtao Zheng, Yong Xiao, Yingliang Liu and Yeru Liang * Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China * Correspondence: caoqy@scau.edu.cn (Q.C.); liangyr@scau.edu.cn (Y.L.) Received: 11 May 2024; Revised: 19 June 2024; Accepted: 22 July 2024; Published: 14 August 2024 Abstract: Lithium batteries are crucial for powering portable electronic devices and electric vehicles, profoundly impacting our global society. However, their repeated charge and discharge cycles cause structural changes that lead to mechanical fractures in the internal components, significantly reducing cycling lifetimes of lithium batteries. Utilizing intrinsic self-healing polymers is a promising strategy to address these issues, as these materials can spontaneously repair mechanical cracks or damages, resulting in greatly enhanced electrochemical performance. In this review, we present and highlight how self-healing polymers contribute to improved electrochemical performance in lithium batteries. We first introduce the self-healing mechanisms identified in current self-healing functions, including external and intrinsic self-healing. Then, we discuss their effects on different electrolyte and binder materials. Key examples illustrating the efficacy of self-healing polymers in extending cycle life and improving battery stability are discussed. Finally, we propose some challenges and future opportunities in this evolving field to stimulate the rational design of advanced self-healing polymers for stable lithium batteries.

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The Addition of an Ultra‐Small Amount of Black Phosphorous Quantum Dots Endow Self‐Healing Polyurethane with a Biomimetic Intelligent Response

Cited by 3 publications

References 39 publications

Mechanical Transfer of Black Phosphorus on a Silk Fibroin Substrate: A Viable Method for Photoresponsive and Printable Biomaterials

Mechanical Transfer of Black Phosphorus on a Silk Fibroin Substrate: A Viable Method for Photoresponsive and Printable Biomaterials

Strengthening‐Durable Trade‐Off and Self‐Healing, Recyclable Shape Memory Polyurethanes Enabled by Dynamic Boron–Urethane Bonds

A Review of Self-Healing Polymers for Lithium Batteries: from Mechanistic Insight to Application

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