Complex Electron Transfer Pathway at a Microelectrode Captured by in Situ Nanospectroscopy.
Anal Chem
; 89(17): 8974-8980, 2017 09 05.
Article
em En
| MEDLINE
| ID: mdl-28799750
ABSTRACT
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.
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MEDLINE
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En
Ano de publicação:
2017
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Article