Combinatorial design of molecular seeds for chirality-controlled synthesis of single-walled carbon nanotubes

Combinatorial design of molecular seeds for chirality-controlled synthesis of single-walled carbon nanotubes
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手性控制合成单壁碳纳米管分子种子的组合设计

DOI:
10.1038/s41467-019-11192-y
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发表时间:
2019
影响因子:
16.6
通讯作者:
K. Amsharov
K. Amsharov
中科院分区:
综合性期刊1区
文献类型:
--
作者:
J. Tomada;T. Dienel;F. Hampel;R. Fasel;K. Amsharov

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手性控制合成单壁碳纳米管(SWCNTs)是当前纳米材料科学面临的主要挑战。从单分子CNT种子(前体)的表面辅助的自下而上的制造,这明确地解释了在生长过程中的管的手性,似乎是最有前途的方法。这一策略打开了一个场地控制合成碳纳米管的几乎任何可能的手性通过应用适当设计的前体分子。然而,由于其复杂的结构,合成所需的前体分子的途径实际上仍然未被探索。在这里,我们报告了一个一般的策略,用于合成的分子种子的控制生长的单壁碳纳米管拥有几乎任何所需的手性组合多段组装。所建议的组合方法允许仅在一个单一步骤中从互补片段轻松组装复杂的CNT前体(具有固定在严格预定义位置的多达100个碳原子)。该方法的可行性证明了21个不同的单壁碳纳米管手性的前体分子的合成,利用三个相对简单的积木。
The chirality-controlled synthesis of single-walled carbon nanotubes (SWCNTs) is a major challenge facing current nanomaterials science. The surface-assisted bottom-up fabrication from unimolecular CNT seeds (precursors), which unambiguously predefine the chirality of the tube during the growth, appears to be the most promising approach. This strategy opens a venue towards controlled synthesis of CNTs of virtually any possible chirality by applying properly designed precursor molecules. However, synthetic access to the required precursor molecules remains practically unexplored because of their complex structure. Here, we report a general strategy for the synthesis of molecular seeds for the controlled growth of SWCNTs possessing virtually any desired chirality by combinatorial multi-segmental assembly. The suggested combinatorial approach allows facile assembly of complex CNT precursors (with up to 100 carbon atoms immobilized at strictly predefined positions) just in one single step from complementary segments. The feasibility of the approach is demonstrated on the synthesis of the precursor molecules for 21 different SWCNT chiralities utilizing just three relatively simple building blocks.
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