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Voltage-Driven Conformational Switching with Distinct Raman Signature in a Single-Molecule Junction

Bi, Hai and Palma, Carlos-Andres and Gong, Yuxiang and Hasch, Peter and Elbing, Mark and Mayor, Marcel and Reichert, Joachim and Barth, Johannes V.. (2018) Voltage-Driven Conformational Switching with Distinct Raman Signature in a Single-Molecule Junction. Journal of the American Chemical Society, 140 (14). pp. 4835-4840.

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Official URL: https://edoc.unibas.ch/68405/

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Abstract

Precisely controlling well-defined, stable single-molecule junctions represents a pillar of single-molecule electronics. Early attempts to establish computing with molecular switching arrays were partly challenged by limitations in the direct chemical characterization of metalâEuro"moleculeâEuro"metal junctions. While cryogenic scanning probe studies have advanced the mechanistic understanding of current- and voltage-induced conformational switching, metalâEuro"moleculeâEuro"metal conformations are still largely inferred from indirect evidence. Hence, the development of robust, chemically sensitive techniques is instrumental for advancement in the field. Here we probe the conformation of a two-state molecular switch with vibrational spectroscopy, while simultaneously operating it by means of the applied voltage. Our study emphasizes measurements of single-molecule Raman spectra in a room-temperature stable single-molecule switch presenting a signal modulation of nearly 2 orders of magnitude.
Faculties and Departments:05 Faculty of Science
05 Faculty of Science > Departement Chemie
05 Faculty of Science > Departement Chemie > Chemie > Molecular Devices and Materials (Mayor)
UniBasel Contributors:Mayor, Marcel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:0002-7863
e-ISSN:1520-5126
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:02 Jul 2019 13:09
Deposited On:02 Jul 2019 13:09

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