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Cyclooctatetraene-Embedded Carbon Nanorings.

Sheng-Nan LeiLing ZhuNing XueXuedong XiaoLe ShiDuan-Chao WangZhe LiuXin-Ru GuanYuan XieKe LiuLian-Rui HuZhaohui WangJ Fraser StoddartQing-Hui Guo
Published in: Angewandte Chemie (International ed. in English) (2024)
With the prosperity of the development of carbon nanorings, certain topologically or functionally unique units-embedded carbon nanorings have sprung up in the past decade. Herein, we report the facile and efficient synthesis of three cyclooctatetraene-embedded carbon nanorings (COTCNRs) that contain three (COTCNR1 and COTCNR2) and four (COTCNR3) COT units in a one-pot Yamamoto coupling. These nanorings feature hoop-shaped segments of Gyroid (G-), Diamond (D-), and Primitive (P-) type carbon schwarzites. The conformations of the trimeric nanorings COTCNR1 and COTCNR2 are shape-persistent, whereas the tetrameric COTCNR3 possesses a flexible carbon skeleton which undergoes conformational changes upon forming host-guest complexes with fullerenes (C 60 and C 70 ), whose co-crystals may potentially serve as fullerene-based semiconducting supramolecular wires with electrical conductivities on the order of 10 -7  S cm -1 (for C 60 ⊂COTCNR3) and 10 -8  S cm -1 (for C 70 ⊂COTCNR3) under ambient conditions. This research not only describes highly efficient one-step syntheses of three cyclooctatetraene-embedded carbon nanorings which feature hoop-shaped segments of distinctive topological carbon schwarzites, but also demonstrates the potential application in electronics of the one-dimensional fullerene arrays secured by COTCNR3.
Keyphrases
  • highly efficient
  • deep learning
  • air pollution
  • risk assessment
  • gold nanoparticles
  • single molecule
  • quantum dots