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Article Dans Une Revue Analytical Chemistry Année : 2017

Complex Electron Transfer Pathway at a Microelectrode Captured by in Situ Nanospectroscopy

Résumé

In the quest for analytical tools which enable the characterization of materials at the nanoscale and under the condition of their operation (in situ, operando), the emerging tip-enhanced Raman spectroscopy (TERS) now enters the spotlight. We demonstrate in this work that a TERS tip can be functionalized and partially insulated to be used as a microelectrode enabling electrochemical substrate enhanced Raman sectroscopy (EC-SERS) at a single hotspot. This “SERS at a tip” experiment enables one to capture the electrochemical transformation of a molecular layer self-assembled on a tapered gold microelectrode. The proposed setup and protocol open new perspectives in the characterization and development of complex redox architectures for molecular devices.

Domaines

Chimie
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Dates et versions

hal-01592672 , version 1 (25-09-2017)

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Thomas Touzalin, Suzanne Joiret, Emmanuel Maisonhaute, Ivan T. Lucas. Complex Electron Transfer Pathway at a Microelectrode Captured by in Situ Nanospectroscopy. Analytical Chemistry, 2017, 89 (17), pp.8974 - 8980. ⟨10.1021/acs.analchem.7b01542⟩. ⟨hal-01592672⟩
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