Double-Holed Fullerenes
Double-Holed Fullerenes
复制标题
双孔富勒烯
DOI：
10.1021/jacs.0c10676
复制
发表时间：
2020
影响因子：
15
通讯作者：
Murata Yasujiro
中科院分区：
文献类型：
--
作者：
Hashikawa Yoshifumi;Fushino Teppei;Murata Yasujiro
具有多个孔的完全熔融的笼状纳米碳是多孔碳框架的节段结构，长期以来被设想为感兴趣的合成目标。然而，传统的自下而上的方法不能克服石墨前体被圆整所需的高应变能。在此，我们报告了一种自上而下的方法来生产完全熔融的碳纳米肘作为双孔富勒烯衍生自应变C60。简洁的一锅法合成具有独特的选择性，使六个化合物的分离，而孔大小是可变的，从8至12元环，反之亦然。晶体学分析证实了它们具有不同曲率的肘状结构。在晶体内，发现圆柱形纳米孔排列，其中包含溶剂客人，让人想起假设的富勒烯海绵。
Fully-fused caged nanocarbons with multiple orifices are segmental structures of porous carbon frameworks long envisioned as synthetic targets of interest. Conventional bottom-up approaches, however, could not overcome the high strain energies required for graphitic precursors to be rounded up. Herein, we report a top-down approach to produce fully-fused carbon nanoelbows as double-holed fullerenes derived from strained C60. The concise one-pot synthesis featuring unique selectivity enabled the isolation of six compounds, while orifice sizes were modifiable from 8- to 12-membered rings and vice versa. The crystallographic analysis confirmed their elbow-shaped structures with different curvatures. Within the crystal, cylindrical nanoporous arrangement were found with the inclusion of solvent guests, reminiscent of hypothetical fullerene sponges.