Oxidation‐Mediated Kinetic Strategies for Engineering Metal–Phenolic Networks. Issue 36 (5th August 2019)

• Record Type: Journal Article
• Authors: Zhong, Qi‐Zhi; Li, Shiyao; Chen, Jingqu; Xie, Ke; Pan, Shuaijun; Richardson, Joseph J.; Caruso, Frank
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 36(2019)
• Page Start: 12563
• Page End: 12568
• Publication Date: 2019-08-05
• Subjects: metal–organic films -- polyphenols -- reactive oxygen species -- self-assembly -- thin films; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201907666
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The tunable growth of metal–organic materials has implications for engineering particles and surfaces for diverse applications. Specifically, controlling the self‐assembly of metal–phenolic networks (MPNs), an emerging class of metal–organic materials, is challenging, as previous studies suggest that growth often terminates through kinetic trapping. Herein, kinetic strategies were used to temporally and spatially control MPN growth by promoting self‐correction of the coordinating building blocks through oxidation‐mediated MPN assembly. The formation and growth mechanisms were investigated and used to engineer films with microporous structures and continuous gradients. Moreover, reactive oxygen species generated by ultrasonication expedite oxidation and result in faster (ca. 30 times) film growth than that achieved by other MPN assembly methods. This study expands our understanding of metal–phenolic chemistry towards engineering metal–phenolic materials for various applications. Abstract : Kinetic assembly is an efficient strategy for rapidly and continuously growing metal–phenolic network materials. Using reactive oxygen species, films were grown about 30 times faster than with existing technologies. Furthermore, the films display unique microstructures and continuous film gradients, which are desirable properties for applications in drug delivery and separations.