Lasse E. P. Kyllönen, Viswanathan Chinuswamy, Davide Maffeo, Evangelos T. Kefalas, Johanna M. Haider, Zoe Pikramenou, Irene M. Mavridis, Konstantina Yannakopoulou and Nikos Glezos Electronic transport between Au surface and scanning tunnelling microscope tip via a multipodal cyclodextrin host–metallo-guest supramolecular system Journal of Physical Organic Chemistry 25
An elementary supramolecular conducting system, constructed using a novel (±)-thioctic acid-functionalized β-cyclodextrin host, deposited on a gold surface, and an iridium-bearing guest with biphenyl tails, was used to investigate remote electron communication between the flat Au surface and the Pt/Ir tip of an STM. I-V spectroscopic analysis of the tunnelling current through this supramolecular layer revealed the relation between the effective barrier height and tunnelling distance. A small increase of conductance is observed, compared to the layer without the guest.
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