کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
186011 | 459606 | 2014 | 6 صفحه PDF | دانلود رایگان |

We measured the single-molecule conductance of alkanedicarboxylic acid (HOOC − (CH2)n − COOH, n = 1 − 5) with Pd nanoclusters by electrochemical jump-to-contact STM-break junction. They gave out decay constant βN of 0.652 per (−CH2) unit and contact conductance of 97 nS. The single-molecule conductance of carboxylic acid binding to bulk metal electrode was also studied, and has almost the same value as that binding to Pd nanoclusters. The conductance study on Pd-oxalic acid junctions shows that the electron transfer through the ultrashort molecular junctions is not only contributed by the “through-bond” (TB) mechanism but also “through-space” (TS) mechanism. Our work provides a new path to study the single-molecule conductance with Pd contacts.
Journal: Electrochimica Acta - Volume 123, 20 March 2014, Pages 205–210