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Author: Deckert, Volker × Author: Singh, Pushkar × DDC: 540 × Type: Text × WGL Institute: IPHT ×

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    Differences in single and aggregated nanoparticle plasmon spectroscopy
    (Cambridge : RSC Publ., 2014) Singh, Pushkar; Deckert-Gaudig, Tanja; Schneidewind, Henrik; Kirsch, Konstantin; van Schrojenstein Lantman, Evelien M.; Weckhuysen, Bert M.; Deckert, Volker
    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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    Single molecule level plasmonic catalysis – a dilution study of p-nitrothiophenol on gold dimers
    (Cambridge : Soc., 2015) Zhang, Zhenglong; Deckert-Gaudig, Tanja; Singh, Pushkar; Deckert, Volker
    Surface plasmons on isolated gold dimers can initiate intermolecular reactions of adsorbed p-nitrothiophenol. At the single molecule level when dimerization is not possible an intramolecular reaction can be observed. Experimental evidence indicates that plasmon-induced hot electrons provide the required activation energy.