Differences in single and aggregated nanoparticle plasmon spectroscopy
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Date
2014
Volume
17
Issue
5
Journal
Physical chemistry, chemical physics : PCCP
Series Titel
Book Title
Publisher
Cambridge : RSC Publ.
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Abstract
Vibrational spectroscopy usually provides structural information averaged over many molecules. We report a larger peak position variation and reproducibly smaller FWHM of TERS spectra compared to SERS spectra indicating that the number of molecules excited in a TERS experiment is extremely low. Thus, orientational averaging effects are suppressed and micro ensembles are investigated. This is shown for a thiophenol molecule adsorbed on Au nanoplates and nanoparticles.
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CC BY 3.0 Unported