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- Title
Three-Dimensional Anionic Cyclodextrin-Based Covalent Organic Frameworks.
- Authors
Zhang, Yuanyuan; Duan, Jiyun; Ma, Dou; Li, Pengfei; Li, Siwu; Li, Haiwei; Zhou, Junwen; Ma, Xiaojie; Feng, Xiao; Wang, Bo
- Abstract
Three-dimensional covalent organic frameworks (3D COFs) are promising crystalline materials with well-defined structures, high porosity, and low density; however, the limited choice of building blocks and synthetic difficulties have hampered their development. Herein, we used a flexible and aliphatic macrocycle, namely γ-cyclodextrin (γ-CD), as the soft struts for the construction of a polymeric and periodic 3D extended network, with the units joined via tetrakis(spiroborate) tetrahedra with various counterions. The inclusion of pliable moieties in the robust open framework endows these CD-COFs with dynamic features, leading to a prominent Li ion conductivity of up to 2.7 mS cm−1 at 30 °C and excellent long-term Li ion stripping/plating stability. Exchanging the counterions within the pores can effectively modulate the interactions between the CD-COF and CO2 molecules.
- Subjects
LITHIUM ions; SUPERIONIC conductors; POROSITY
- Publication
Angewandte Chemie, 2017, Vol 129, Issue 51, p16531
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201710633