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Jellyfish-Inspired Polyurea Ionogel with Mechanical Robustness, Self-Healing, and Fluorescence Enabled by Hyperbranched Cluster Aggregates.
Zhang, Zhipeng; Qian, Lu; Zhang, Bin; Ma, Chunfeng; Zhang, Guangzhao.
Afiliación
  • Zhang Z; Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
  • Qian L; Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
  • Zhang B; Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
  • Ma C; Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
  • Zhang G; Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
Angew Chem Int Ed Engl ; : e202410335, 2024 Jul 05.
Article en En | MEDLINE | ID: mdl-38967098
ABSTRACT
Ionogels are promising for soft iontronics, with their network structure playing a pivotal role in determining their performance and potential applications. However, simultaneously achieving mechanical toughness, low hysteresis, self-healing, and fluorescence using existing network structures is challenging. Drawing inspiration from jellyfish, we propose a novel hierarchical crosslinking network structure design for in situ formation of hyperbranched cluster aggregates (HCA) to fabricate polyurea ionogels to overcome these challenges. Leveraging the disparate reactivity of isocyanate groups, we induce the in situ formation of HCA through competing reactions, enhancing toughness and imparting the clustering-triggered emission of ionogel. This synergy between supramolecular interactions in the network and plasticizing effect in ionic liquid leads to reduced hysteresis of the ionogel. Furthermore, the incorporation of NCO-terminated prepolymer with dynamic oxime-urethane bonds (NPU) enables self-healing and enhances stretchability. Our investigations highlight the significant influence of HCA on ionogel performance, showcasing mechanical robustness including high strength (3.5 MPa), exceptional toughness (5.5 MJ m-3), resistance to puncture, and low hysteresis, self-healing, as well as fluorescence, surpassing conventional dynamic crosslinking approaches. This network design strategy is versatile and can meet the various demands of flexible electronics applications.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania