Fullerene-Based Anchoring Groups for Molecular Electronics

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• 作者：Christian A. Martin ; Dapeng Ding ; Jakob Kryger S&#248 ; rensen ; Thomas Bj&#248 ; rnholm ; Jan M. van Ruitenbeek ; Herre S. J. van der Zant
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：October 8, 2008
• 年：2008
• 卷：130
• 期：40
• 页码：13198-13199
• 全文大小：180K
• 年卷期：v.130,no.40(October 8, 2008)
• ISSN：1520-5126

文摘

We present results on a new fullerene-based anchoring group for molecular electronics. Using lithographic mechanically controllable break junctions in vacuum we have determined the conductance and stability of single-molecule junctions of 1,4-bis(fullero[c]pyrrolidin-1-yl)benzene. The compound can be self-assembled from solution and has a low-bias conductance of 3 × 10⁻⁴ G₀. Compared to 1,4-benzenedithiol the fullerene-anchored molecule exhibits a considerably lower conductance spread. In addition, the signature of the new compound in histograms is more significant than that of 1,4-benzenediamine, probably owing to a more stable adsorption motif. Statistical analyses of the breaking of the junctions confirm the stability of the fullerene−gold bond.