Issue 42, 2020

Electrochemical coating of different conductive polymers on diverse plasmonic metal nanocrystals

Abstract

Conductive polymers are attracting much attention for realizing active plasmonics on conventional static plasmonic nanostructures because of their variable dielectric functions. Combining organic conductive polymers with inorganic plasmonic nanostructures allows for the creation of active devices, such as active metasurfaces, reconfigurable metalenses and dynamic plasmonic holography. However, the complexity of such a combination, together with the poor control in polymer thickness and morphology, has limited the advancement of active plasmonics. Herein we report on the electrochemical coating of conductive polymers on pre-grown metal nanocrystals. Robust control of the polymer thickness and morphology is accomplished through the variation of the applied electrochemical potential. Various types of conductive polymers are coated on different metal nanocrystals, including Au, Pd and Pt. Active plasmonic color switching and H2O2 sensing are demonstrated with polyaniline-coated Au nanorods.

Graphical abstract: Electrochemical coating of different conductive polymers on diverse plasmonic metal nanocrystals

Supplementary files

Article information

Article type
Communication
Submitted
03 aug 2020
Accepted
02 okt 2020
First published
05 okt 2020

Nanoscale, 2020,12, 21617-21623

Electrochemical coating of different conductive polymers on diverse plasmonic metal nanocrystals

W. Lu, T. H. Chow, Y. Lu and J. Wang, Nanoscale, 2020, 12, 21617 DOI: 10.1039/D0NR05715K

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