We present the chemical synthesis as well as charge transport measurements and calculations for a new tripodal platform based on a rigid 9,9′-spirobifluorene equipped with a phenylene-ethynylene wire. The transport experiments are performed with the help of the low-temperature mechanically controlled break junction technique with gold electrodes. By combining experimental and theoretical investigations of elastic and inelastic charge transport, we show that the current proceeds through the designated molecular wire and identify a binding geometry that is compatible with the experimental observations. The conductive molecular wire on the platform features a well-defined and relatively high conductance of the order of 10 −3 G 0 despite the length of the current path of more than 1.7 nm, demonstrating that this platform is suitable to incorporate functional units like molecular switches or sensors.
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机译：我们介绍了一种新的三脚架平台的化学合成以及电荷传输的测量和计算，该平台基于带有苯撑乙炔线的刚性9,9'-螺双芴。借助金电极的低温机械控制断开结技术进行了传输实验。通过结合弹性和非弹性电荷传输的实验和理论研究，我们表明电流流经指定的分子导线，并确定了与实验观察结果兼容的结合几何形状。尽管电流路径的长度超过1.7 nm，平台上的导电分子丝仍具有10 -3 G 0量级的定义良好且相对较高的电导率，这表明该平台适合合并诸如分子的功能单元开关或传感器。
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