Analysis of Single Molecule Conductance of Heterogeneous Porphyrin Arrays by Partial Transmission Probabilities
Analysis of Single Molecule Conductance of Heterogeneous Porphyrin Arrays by Partial Transmission Probabilities
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异质卟啉阵列单分子电导的部分透射概率分析
DOI：
10.1002/slct.201701015
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Ogawa Takuji
中科院分区：
文献类型：
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作者：
Tamaki Takashi;Ohto Tatsuhiko;Yamada Ryo;Tada Hirokazu;Ogawa Takuji
用扫描隧道微观断裂结（STM‐BJ）技术测量了一系列卟啉衍生物的单分子电导（SMC），这些卟啉衍生物的卟啉单元通过具有一个或两个硫代末端基团的苯基桥连接。观察到的电导值用分子部分的部分透射概率（Ti）用方程=G0进行分析。得到了独特的组合，表明了分析的有效性。通过分析，发现与金电极相互作用的游离基卟啉环比硫酸盐与金电极之间的桥（TS - Au）具有更大的透射率（tpt - aup）。
Single molecule conductance (SMC) of a series of porphyrin derivatives, whose porphyrin units are connected through a phenylene bridge that have one or two thiolate end groups, was measured by a scanning tunneling microscopic break junction (STM‐BJ) technique. The observed conductance values were analyzed by partial transmission probabilities (Ti) for the molecular parts using the equationG=G0. Unique combination ofTiwas obtained, which indicates the validity of this analysis. By the analysis, the free‐base porphyrin ring interacting with the gold electrode was found to show a greater transmission probabilityTpor‐Authan that of the bridge between thiolate and the gold electrode (TS‐Au).