Year: 2019
Type: article
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 C60 guest molecule. Mechanically stretching the metallocycle-C60 junction with a scanning tunneling microscopy break junction technique causes the release of the C60 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 C60 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-C60 complexes.
Source: Nature Communications
Institutions: Chinese Academy of Sciences, University of Utah, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Arizona State University, Lancaster University, State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, University of Chinese Academy of Sciences, University of South Florida
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,200
Awards: Active Delivery of Platinum Nanoimmunoconjugates to Improve Breast Cancer Therapy, 基于环金属钌配合物的电极表界面电子转移, Quantum-Interference-Enhanced Thermoelectricity (QUIET)., 有机及金属有机氢键体系的混合价电子转移, G495950301, G5475462528, Self-assembly of 2D metallo-supramolecules as a novel class of antimicrobial biomaterials via forming transmembrane channels, G6479653053, G6829929474, G6893154937, Quantum Effects in Electronic Nanodevices (QuEEN), Self-assembled molecular monolayers with ultra-low thermal conductance for energy harvesting (QSAMs), G929346607
OpenAlex ID: W2979485083