The rational synthesis of organic nanotubes and their hierarchical architectures has remained challenging. Now, one-dimensional hollow covalent organic frameworks have been prepared that can further assemble into toroid-shaped materials.

中文翻译：

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将 COF 保持在循环中

有机纳米管及其分层结构的合理合成仍然具有挑战性。现在，已经制备出可以进一步组装成环形材料的一维中空共价有机框架。