307514-65-4Relevant articles and documents
Non-Interpenetrated Single-Crystal Covalent Organic Frameworks
Han, Jing,Liang, Lin,Luo, Yi,Ma, Tianqiong,Ni, Jianwei,Niu, Jing,Qiu, Yi,Sun, Junliang,Wang, Wei,Wang, Wei David,Wang, Zhi-Peng,Yin, Guan-Lin,Yu, Wei,Zhang, Lei
, p. 17991 - 17995 (2020)
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 2H NMR investigation has determined that the rotation of benzene rings in TPE, being the freest among the reported cases, is as fast as 1.0×104 Hz at 203 K to 1.5×107 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.
