In:
Nature Communications, Springer Science and Business Media LLC, Vol. 10, No. 1 ( 2019-10-10)
Abstract:
Host−guest interactions are of central importance in many biological and chemical processes. However, the investigation of the formation and decomplexation of host−guest systems at the single-molecule level has been a challenging task. Here we show that the single-molecule conductance of organoplatinum(II) metallocycle hosts can be enhanced by an order of magnitude by the incorporation of a C 60 guest molecule. Mechanically stretching the metallocycle-C 60 junction with a scanning tunneling microscopy break junction technique causes the release of the C 60 guest from the metallocycle, and consequently the conductance switches back to the free-host level. Metallocycle hosts with different shapes and cavity sizes show different degrees of flexibility to accommodate the C 60 guest in response to mechanical stretching. DFT calculations provide further insights into the electronic structures and charge transport properties of the molecular junctions based on metallocycles and the metallocycle-C 60 complexes.
Type of Medium:
Online Resource
ISSN:
2041-1723
DOI:
10.1038/s41467-019-12534-6
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2019
detail.hit.zdb_id:
2553671-0
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