Intramolecular Hydrogen Bonding-Based Topology Regulation of Two-Dimensional Covalent Organic Frameworks

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

12 Scopus Citations
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Author(s)

  • Yongwu Peng
  • Liuxiao Li
  • Chongzhi Zhu
  • Bo Chen
  • Meiting Zhao
  • Zhicheng Zhang
  • Zhuangchai Lai
  • Xiao Zhang
  • Yu Han
  • Yihan Zhu

Detail(s)

Original languageEnglish
Pages (from-to)13162-13169
Journal / PublicationJournal of the American Chemical Society
Volume142
Issue number30
Online published4 Jul 2020
Publication statusPublished - 29 Jul 2020

Abstract

Creating molecular networks with different topologies using identical molecular linkers is fundamentally important but requires precise chemistry control. Here, we propose an effective strategy to regulate the network topologies of two-dimensional (2D) covalent organic frameworks (COFs) through the conformational switching of molecular linkages. By simply altering the substituents of an identical molecular linker, the topology-selective synthesis of two highly crystalline 2D COFs can be readily achieved. Their distinct crystal structures are observed and determined by low-dose, high-resolution transmission electron microscopy imaging, indicating that the driving force for linkage conformation switching is intramolecular hydrogen bonding. Our strategy would greatly diversify the COF topologies and enable vast postsynthetic modifications such as boron complexation, endowing these structures with a unique optical property such as fluorescence turn on and aggregation-induced emission.

Research Area(s)

  • CRYSTALLINE, CONSTRUCTION, NANOSHEETS

Citation Format(s)

Intramolecular Hydrogen Bonding-Based Topology Regulation of Two-Dimensional Covalent Organic Frameworks. / Peng, Yongwu; Li, Liuxiao; Zhu, Chongzhi; Chen, Bo; Zhao, Meiting; Zhang, Zhicheng; Lai, Zhuangchai; Zhang, Xiao; Tan, Chaoliang; Han, Yu; Zhu, Yihan; Zhang, Hua.

In: Journal of the American Chemical Society, Vol. 142, No. 30, 29.07.2020, p. 13162-13169.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review