Pentagon-embedded cycloarylene molecules with cylindrical shapes
Pentagon-embedded cycloarylene molecules with cylindrical shapes
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DOI：
10.1002/ange.201704676
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发表时间：
2017-06
影响因子：
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通讯作者：
S. Hitosugi;Sota Sato;Taisuke Matsuno;Takeshi Koretsune;R. Arita;H. Isobe
中科院分区：
文献类型：
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作者：
S. Hitosugi;Sota Sato;Taisuke Matsuno;Takeshi Koretsune;R. Arita;H. Isobe
Cylinder-shaped graphitic networks in carbon nanotubes have attracted interest from scientists in various disciplines. The chemical synthesis of their segmental molecules is being accepted as a challenging and appealing subject in the chemistry field, and their synthesis deepens our understanding of curved and conjugated arrays of hexagons. We herein report the synthesis of cylinder-shaped molecules containing non-hexagon bridges in their conjugated systems. Multiple pentagon units were embedded in the cylinder-shaped, discrete molecules, and the stereoisomerism originating from their helical carbon arrangements was revealed. Structural analyses using NMR, UV-vis absorption and single-crystal X-ray diffraction studies provided fundamental experimental information on the curved systems conjugated via pentagons. This study provides the first experimental guide for further exploration of anomalous non-hexagon arrays of graphitic carbons in cylinder shapes.
