Wednesday, 16 December 2020 - 18:00-19:00
PHYSICS AND CHEMISTRY OF SINGLE-MOLECULE CIRCUITS
Prof. Latha Venkataraman
Department of Applied Physics and Chemistry
Columbia University
New York (USA)
Over the past decade, there has been tremendous progress in the measurement, modeling and understanding of structure-function relationships in single molecule circuits. Experimental techniques for reliable and reproducible single molecule junction measurements have led, in part, to this progress. In particular, the scanning tunneling microscope-based break-junction technique has enabled rapid, sequential measurement of large numbers of nanoscale junctions allowing a statistical analysis to readily distinguish reproducible characteristics. Although the break-junction technique is mostly used to measure electronic properties of single-molecule circuits, in this talk, I will demonstrate its versatile uses to understand chemical phenomena with single-molecule precision. I will show that we can probe the physisorbed nature of the gold-sulfur bond in a self-assembled monolayer prepared from the solution deposition of dithiols. I will also show you how we can control chemical reactions using electric and electrochemical fields.
The seminar will be held online using Microsoft Teams. Write to paola.posocco@dia.units.it to partecipate.
Last updated on: 02/09/2021 - 09:25
