Differences in single and aggregated nanoparticle plasmon spectroscopy

作者：Singh Pushkar; Deckert Gaudig Tanja; Schneidewind Henrik; Kirsch Konstantin; Lantman Evelien M van Schrojenstein; Weckhuysen Bert M^*; Deckert Volker

来源：Physical Chemistry Chemical Physics, 2015, 17(5): 2991-2995.

DOI：10.1039/c4cp04850d

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.

• 出版日期2015