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Title: Self-Assembly of Large Gold Nanoparticles for Surface-Enhanced Raman Spectroscopy

Abstract

Performance of portable technologies from mobile phones to electric vehicles is currently limited by the energy density and lifetime of lithium batteries. Expanding the limits of battery technology requires in situ detection of trace components at electrode–electrolyte interphases. Surface-enhance Raman spectroscopy could satisfy this need if a robust and reproducible substrate were available. Gold nanoparticles (Au NPs) larger than 20 nm diameter are expected to greatly enhance Raman intensity if they can be assembled into ordered monolayers. A three-phase self-assembly method is presented that successfully results in ordered Au NP monolayers for particle diameters ranging from 13 to 90 nm. The monolayer structure and Raman enhancement factors (EFs) are reported for a model analyte, rhodamine, as well as the best performing polymer electrolyte salt, lithium bis(trifluoromethane)sulfonimide. Experimental EFs for the most part correlate with predictions based on monolayer geometry and with numerical simulations that identify local electromagnetic field enhancements. Lastly, the EFs for the best performing Au NP monolayer are between 10 6 and 10 8 and give quantitative signal response when analyte concentration is changed.

Authors:
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Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1350946
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 9; Journal Issue: 15; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; battery electrolyte; FDTD; gold nanoparticle; monolayer; self-assembly; surface-enhanced Raman spectroscopy

Citation Formats

Yang, Guang, Nanda, Jagjit, Wang, Boya, Chen, Gang, and Hallinan, Daniel T. Self-Assembly of Large Gold Nanoparticles for Surface-Enhanced Raman Spectroscopy. United States: N. p., 2017. Web. doi:10.1021/acsami.7b01121.
Yang, Guang, Nanda, Jagjit, Wang, Boya, Chen, Gang, & Hallinan, Daniel T. Self-Assembly of Large Gold Nanoparticles for Surface-Enhanced Raman Spectroscopy. United States. doi:10.1021/acsami.7b01121.
Yang, Guang, Nanda, Jagjit, Wang, Boya, Chen, Gang, and Hallinan, Daniel T. Tue . "Self-Assembly of Large Gold Nanoparticles for Surface-Enhanced Raman Spectroscopy". United States. doi:10.1021/acsami.7b01121. https://www.osti.gov/servlets/purl/1350946.
@article{osti_1350946,
title = {Self-Assembly of Large Gold Nanoparticles for Surface-Enhanced Raman Spectroscopy},
author = {Yang, Guang and Nanda, Jagjit and Wang, Boya and Chen, Gang and Hallinan, Daniel T.},
abstractNote = {Performance of portable technologies from mobile phones to electric vehicles is currently limited by the energy density and lifetime of lithium batteries. Expanding the limits of battery technology requires in situ detection of trace components at electrode–electrolyte interphases. Surface-enhance Raman spectroscopy could satisfy this need if a robust and reproducible substrate were available. Gold nanoparticles (Au NPs) larger than 20 nm diameter are expected to greatly enhance Raman intensity if they can be assembled into ordered monolayers. A three-phase self-assembly method is presented that successfully results in ordered Au NP monolayers for particle diameters ranging from 13 to 90 nm. The monolayer structure and Raman enhancement factors (EFs) are reported for a model analyte, rhodamine, as well as the best performing polymer electrolyte salt, lithium bis(trifluoromethane)sulfonimide. Experimental EFs for the most part correlate with predictions based on monolayer geometry and with numerical simulations that identify local electromagnetic field enhancements. Lastly, the EFs for the best performing Au NP monolayer are between 106 and 108 and give quantitative signal response when analyte concentration is changed.},
doi = {10.1021/acsami.7b01121},
journal = {ACS Applied Materials and Interfaces},
number = 15,
volume = 9,
place = {United States},
year = {Tue Apr 04 00:00:00 EDT 2017},
month = {Tue Apr 04 00:00:00 EDT 2017}
}

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