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Interlocking Organic Nanotubes into a Three-Dimensional Framework: Synthesis, Crystal Structure with Dual-Buckle Configuration, and Application in Stabilizing Lithium Metal Anode
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DOI：10.1002/anie.202517238.png)
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Abstract
En 中文
Single-crystalline organic nanotubes (ONTs) are very important to help us deeply understand the structure-property relationship, however, their preparation remains challenging. In this study, we propose a B <- N coordination-directed self-locking strategy to construct robust single-crystalline ONTs (named as CityU-56). Single crystals of CityU-56 are assembled via the formation of dynamic B <- N bonds between 2,2 ',7,7 '-tetra(4-pyridyl)-9,9 '-spirobifluorene (SPFPY) and 1,4-bis(benzodioxaborole)benzene (BACT). Single-crystal X-ray diffraction analysis indicates that CityU-56 possesses a well-defined prismatic nanotube structure with highly ordered arrays. Importantly, the dual buckle-tongue-latch interlocking mechanism between adjacent nanotubes stabilizes the ordered arrangement of the nanotubes through synergistic B <- N coordination and pi-pi stacking. Given these advantages, CityU-56 has been demonstrated to serve as an artificial solid electrolyte interphase (ASEI) layer for lithium metal anodes, which significantly enhanced the stability and long-term cycling performance of the as-fabricated batteries.
Keywords:
Covalent organic nanotubes
Lithium metal cells
Preparation
Solid-electrolyte interphase layer
Structure
Journal
IF:
16.9
Papers:
5.6W
Citations:
53.0W