Self-assembled hexa-peri-hexabenzocoronene graphitic nanotube
Self-assembled hexa-peri-hexabenzocoronene graphitic nanotube
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DOI：
10.1126/science.1097789
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发表时间：
2004-06-04
期刊：
影响因子：
56.9
通讯作者：
Aida, T
中科院分区：
文献类型：
--
作者：
Hill, JP;Jin, WS;Aida, T
两亲性六邻六苯并冠烯自组装形成pi电子，离散的纳米管对象。该物体的特点是长宽比大于1000，具有均匀的14纳米宽的开放式空心空间，比碳纳米管大一个数量级。壁厚为3纳米，由pi堆叠的石墨烯分子的螺旋阵列组成，其内外表面被亲水性三甘醇链覆盖。石墨纳米管具有氧化还原活性，在180纳米间隙电极上的单个纳米管在氧化后，在285开尔文时的电导率为2.5兆欧。这种分子工程石墨具有一维管状形状和化学表面，是分子电子学的重要一步。
An amphiphilic hexa-peri-hexabenzocoronene self-assembles to form a pi-electronic, discrete nanotubular object. The object is characterized by an aspect ratio greater than 1000 and has a uniform, 14-nanometer-wide, open-ended hollow space, which is an order of magnitude larger than those of carbon nanotubes. The wall is 3 nanometers thick and consists of helical arrays of the pi-stacked graphene molecule, whose exterior and interior surfaces are covered by hydrophilic triethylene glycol chains. The graphitic nanotube is redox active, and a single piece of the nanotube across 180-nanometer-gap electrodes shows, upon oxidation, an electrical conductivity of 2.5 megohms at 285 kelvin. This family of molecularly engineered graphite with a one-dimensional tubular shape and a chemically accessible surface constitutes an important step toward molecular electronics.