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Abstract Magnetic circular dichroism (MCD) is demonstrated for Ag nanodecahedra with different morphological qualities or purities that involve the presence/absence of rounded/regular polyhedra and/or of small quasi-spherical particles. UV-vis extinction… Click to show full abstract
Abstract Magnetic circular dichroism (MCD) is demonstrated for Ag nanodecahedra with different morphological qualities or purities that involve the presence/absence of rounded/regular polyhedra and/or of small quasi-spherical particles. UV-vis extinction spectra exhibit two characteristic localized surface plasmon resonance (LSPR) peaks and are almost identical between the examined samples (namely, rather insensitive to their morphological quality). In contrast, MCD profiles are strongly quality-dependent. Spectral deconvolution analysis of both extinction and MCD gives a useful relationship between the quality and spectroscopic features. We then propose that MCD spectroscopy is facilely applicable to the evaluation of morphological quality in Ag nanodecahedra.
Journal Title: Chemical Physics Letters
Year Published: 2019
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