{"title":"Mixed Ionic–Electronic Covalent Organic Frameworks as a Platform for High-Performance Electro-Responsive Smart Materials","authors":"Ruijing Ma, Wuyang Nie, Yudong Wang, Xufeng Hu, Xiaopeng Zhao, Jianbo Yin","doi":"10.1021/acs.chemmater.4c01052","DOIUrl":null,"url":null,"abstract":"Ionic covalent organic framework (iCOF) materials are providing a potential platform to develop next-generation electro-responsive smart materials because of ion movement-induced interfacial polarization. However, it is challenging to achieve strong interfacial polarization while reducing electrode polarization due to the nature of pure ions as charge carriers in iCOF. In this article, we developed a mixed ionic–electronic covalent organic framework (ieCOF), which can overcome this challenge. This ieCOF was prepared by thermal cracking of task-specific ionic liquids. It shows that ieCOF is composed of a positively charged slight-carbonized framework attracted with fluoric counteranions. Through changing the heating target temperature, ieCOF with different ion contents and different carbonized level frameworks can be obtained. We find that compared with the ion-dominated system, the mixed ionic–electronic ieCOF can achieve a stronger interfacial polarization but a weaker electrode polarization. Consequently, the ieCOF has a higher electro-responsive electrorheological (ER) effect but lower leaking current density. In particular, increasing the temperature can promote the interfacial polarization intensity, resulting in a higher ER effect. The present result shows that ieCOF can provide a platform to design and develop high-performance electro-responsive smart materials.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":7.2000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry of Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.chemmater.4c01052","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Ionic covalent organic framework (iCOF) materials are providing a potential platform to develop next-generation electro-responsive smart materials because of ion movement-induced interfacial polarization. However, it is challenging to achieve strong interfacial polarization while reducing electrode polarization due to the nature of pure ions as charge carriers in iCOF. In this article, we developed a mixed ionic–electronic covalent organic framework (ieCOF), which can overcome this challenge. This ieCOF was prepared by thermal cracking of task-specific ionic liquids. It shows that ieCOF is composed of a positively charged slight-carbonized framework attracted with fluoric counteranions. Through changing the heating target temperature, ieCOF with different ion contents and different carbonized level frameworks can be obtained. We find that compared with the ion-dominated system, the mixed ionic–electronic ieCOF can achieve a stronger interfacial polarization but a weaker electrode polarization. Consequently, the ieCOF has a higher electro-responsive electrorheological (ER) effect but lower leaking current density. In particular, increasing the temperature can promote the interfacial polarization intensity, resulting in a higher ER effect. The present result shows that ieCOF can provide a platform to design and develop high-performance electro-responsive smart materials.
期刊介绍:
The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.