Universiteit Leiden

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Lecture

This Week's Discoveries | 14 March 2017

Date
14 March 2017
Time
Series
This Week's Discoveries
Address
Oort Building
Niels Bohrweg 2
2333 CA Leiden
Room
De Sitterzaal

Lecture

Title
'Gold nano-antennas reveal electrochemical properties of Methylene Blue at single-molecule level'

Speaker
Martin Caldarola (LION) is a post-doctoral researcher at the Single-Molecule optics group, with Michel Orrit. He is interested in studying enhanced light-matter interactions at the nanoscale, for example, single-molecule fluorescence enhancement.

Abstract
Redox reactions are central to energy conversion and life metabolism. Using gold nanoantennas we are able to study the electrochemical properties of the well-known redox indicator, but a bad fluorophore, Methylene Blue (MB) at single-molecule (SM) level. By measuring the same molecule at different electrochemical potentials we determined the mid-point potential of each single molecule through its redox-induced fluorescence blinking dynamics.