三联烯
共价键
棱镜
节点(物理)
平面的
拓扑(电路)
材料科学
多孔性
巴(单位)
纳米技术
计算机科学
化学
共价有机骨架
物理
组合数学
数学
有机化学
计算机图形学(图像)
复合材料
光学
气象学
量子力学
作者
Hui Li,Fengqian Chen,Xinyu Guan,Jiali Li,Cuiyan Li,Bin Tang,Valentin Valtchev,Yushan Yan,Shilun Qiu,Qianrong Fang
标识
DOI:10.26434/chemrxiv.13311602.v1
摘要
The growth of three-dimensional covalent organic frameworks (3D COFs) with new topologies is still considered as a great challenge due to limited availability of high-connectivity building units. Here we report the design and synthesis of novel 3D triptycene-based COFs, termed JUC-568 and JUC-569, following the deliberate symmetry-guided design principle. By combining a triangular prism (6-connected) node with a planar triangle (3-connected) or another triangular prism node, the targeted COFs adopt unreported ceq or non-interpenetrated acs topology, respectively. Both materials show permanent porosity and impressive performance in the adsorption of CO 2 (~ 98 cm 3 /g at 273 K and 1 bar), CH 4 (~ 48 cm 3 /g at 273 K and 1 bar), and especially H 2 (up to 274 cm 3 /g or 2.45 wt% at 77 K and 1 bar), which is highest among porous organic materials reported to date. This research thus provides a promising strategy for diversifying 3D COFs based on complex building blocks and promotes their potential applications in energy storage and environment-related fields.
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