中国科学院化学研究所王太山团队报道了含碳纳米管段金属管Ce2@C100的合成、单分子电导和超分子组装。相关研究成果于2022年1月19日发表在《德国应用化学》。
管状富勒烯可以被认为是具有精确结构的端封碳纳米管,是用于先进单分子电子器件的有前途的纳米碳材料。
该文中,研究人员报道了金属富勒烯管Ce 2@D 5(450)-C 100的合成和表征,该金属富勒烯管具有管状C 100笼,带有碳纳米管段和两个富勒烯端盖。由于管状Ce2@D5(450)-C100与球形Ce2@Ih-C80之间存在结构相关性,该文通过实验和理论方法对它们的结构-性能关系进行了比较。值得注意的是,单分子电导测量确定Ce 2@D 5(450)-C100的电导率比Ce 2@Ih-C 80的电导率大8倍。
此外,还研究了Ce 2@D 5(450)-C 100和[12]CPP纳米环的超分子组装,理论计算表明,Ce 2@D 5(450)-C100在[12]CPP的空腔中采用了“直立”结构。研究结果表明了这种金属管的特殊性质。
附:英文原文
Title: A Metallofullertube of Ce2@C100 with Carbon Nanotube Segment: Synthesis, Single-Molecule Conductance and Supramolecular Assembly
Author: Wang Li, Fayu Qu, Linshan Liu, Zhuxia Zhang, Jiayi Liang, Yuxi Lu, Jie Zhang, Lin Wang, Chunru Wang, Taishan Wang
Issue&Volume: 2022-01-19
Abstract: Tubular fullerenes can be considered as end-capped carbon nanotubes with accurate structure, which are promising nanocarbon materials for advanced single-molecule electronic devices. Herein, we report the synthesis and characterizations of a metallofullertube Ce 2 @ D 5 (450)-C 100 , which has a tubular C 100 cage with a carbon nanotube segment and two fullerene end-caps. As there are structure correlations between tubular Ce 2 @ D 5 (450)-C 100 and spherical Ce 2 @ I h -C 80 , the structure-property relationship has been compared for them by means of experimental and theoretical methods. Notably, single-molecule conductance measurement determined that the conductivity of Ce 2 @ D 5 (450)-C 100 was up to eight times larger than that of Ce 2 @ I h -C 80 . Furthermore, supramolecular assembly of Ce 2 @ D 5 (450)-C 100 and [12]CPP nanohoop was investigated, and theoretical calculations revealed that metallofullertube Ce 2 @ D 5 (450)-C 100 adopted a “standing” configuration in the cavity of [12]CPP. These results demonstrate the special nature of this kind of metallofullertube.
DOI: 10.1002/anie.202116854
Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202116854
Angewandte Chemie:《德国应用化学》,创刊于1887年。隶属于德国化学会,最新IF:12.959
官方网址:https://onlinelibrary.wiley.com/journal/15213773
投稿链接:https://www.editorialmanager.com/anie/default.aspx