Investigating Molecule-Electrode Binding in Single Molecule Junctions Using Linker Group Chemistry and Machine Learning
Abstract
Designing circuits based on individual molecules has the potential to produce smaller and more powerful electronic devices. However, a continued challenge to studying the properties of such single molecule circuits is understanding the behavior of the linker group used to connect the molecule to electrodes. This linker plays a critical role because it controls both the electronic coupling and the available binding configurations for the molecule-electrode connections. We have studied a series of single molecule circuits using a mechanically controlled break junction set-up with custom high-speed amplification electronics. By changing both the identity and chemical environment of the molecular linker groups we can gain insight into how and why these linkers affect the value of and variation in molecular conductance. We also develop and use novel data analysis tools including advanced clustering methods to help disentangle the different types of junction behavior in an unbiased manner.
National Science Foundation #DMR-1708443.- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..MARB16002B