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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Formation of Molecular Wires by Nanospace Polymerization of a Diacetylene Derivative Induced with a Scanning Tunneling Microscope at a Solid-Liquid Interface
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Formation of Molecular Wires by Nanospace Polymerization of a Diacetylene Derivative Induced with a Scanning Tunneling Microscope at a Solid-Liquid Interface

机译：通过扫描隧道显微镜在固液界面诱导的二乙炔衍生物的纳米空间聚合形成分子线。

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摘要

A nanospace polymerization reaction was initiated using a scanning tunneling microscope in a monolayer of a diacetylene derivative, 10, 12-nonacosadiynoic acid (NCDA), at a solid-liquid interface to obtain molecular wires. The polymerization threshold with respect to the applied voltage was 2 V, which was 1 V lower than that observed at a solid-air interface. The presence of ionic species considerably enhanced the reaction probability. At more than ± 2 V, the addition of N(CH_3)_4ClO_4 resulted in the expansion of the reaction region and the increase in reaction probability regardless of the sign of the bias voltage applied. Different from the case at the solid-air interface, polymerization at the solid-liquid interface was probably induced through the multiple vibrational excitation of NCDA by repetitive collisions with charged carriers activated by the strong electric field involved in electron avalanche.
机译：使用扫描隧道显微镜在固-液界面上的二乙炔衍生物10，12-壬二芥子酸（NCDA）的单分子层中引发纳米空间聚合反应，从而获得分子线。相对于施加电压的聚合阈值为2V，比在固体-空气界面处观察到的低1V。离子种类的存在大大提高了反应可能性。在大于±2 V的情况下，无论施加偏压的符号如何，N（CH_3）_4ClO_4的添加都会导致反应区域的扩大和反应概率的增加。与固-气界面的情况不同，固-液界面的聚合很可能是通过与电子雪崩中强电场激活的带电载子反复碰撞而引起的NCDA的多次振动激发而引起的。

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