Non-Interpenetrated Single-Crystal Covalent Organic Frameworks

被引:62
|
作者
Liang, Lin [1 ]
Qiu, Yi [2 ]
Wang, Wei David [1 ]
Han, Jing [1 ]
Luo, Yi [3 ]
Yu, Wei [1 ]
Yin, Guan-Lin [1 ]
Wang, Zhi-Peng [1 ]
Zhang, Lei [2 ]
Ni, Jianwei [1 ]
Niu, Jing [1 ]
Sun, Junliang [2 ]
Ma, Tianqiong [1 ,2 ]
Wang, Wei [1 ]
机构
[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Gansu, Peoples R China
[2] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
[3] Stockholm Univ, Dept Mat & Environm Chem, S-10691 Stockholm, Sweden
基金
中国国家自然科学基金;
关键词
3D COFs; matrix isolation; non-interpenetrated frameworks; single crystals; solid-state NMR; SOLID-STATE NMR; 2-DIMENSIONAL POLYMER; DYNAMICS; CONSTRUCTION; LUMINESCENCE; MECHANISM; ZEOLITE; BENZENE; DESIGN; SITES;
D O I
10.1002/anie.202007230
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Growth of covalent organic frameworks (COFs) as single crystals is extremely challenging. Inaccessibility of open-structured single-crystal COFs prevents the exploration of structure-oriented applications. Herein we report for the first time a non-interpenetrated single-crystal COF, LZU-306, which possesses the open structure constructed exclusively via covalent assembly. With a high void volume of 80 %, LZU-306 was applied to investigate the intrinsic dynamics of reticulated tetraphenylethylene (TPE) as the individual aggregation-induced-emission moiety. Solid-state(2)H NMR investigation has determined that the rotation of benzene rings in TPE, being the freest among the reported cases, is as fast as 1.0x10(4) Hz at 203 K to 1.5x10(7) Hz at 293 K. This research not only explores a new paradigm for single-crystal growth of open frameworks, but also provides a unique matrix-isolation platform to reticulate functional moieties into a well-defined and isolated state.
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页码:17991 / 17995
页数:5
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