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Terahertz Raman Spectroscopy of Ligand-Protected Au8 Clusters

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Title: Terahertz Raman Spectroscopy of Ligand-Protected Au8 Clusters
Authors: Kato, Masaru Browse this author →KAKEN DB
Shichibu, Yukatsu Browse this author →KAKEN DB
Ogura, Kazuya Browse this author
Iwasaki, Mitsuhiro Browse this author
Sugiuchi, Mizuho Browse this author
Konishi, Katsuaki Browse this author →KAKEN DB
Yagi, Ichizo Browse this author →KAKEN DB
Issue Date: 1-Oct-2020
Publisher: American Chemical Society
Journal Title: The Journal of Physical Chemistry Letters
Volume: 11
Issue: 19
Start Page: 7996
End Page: 8001
Publisher DOI: 10.1021/acs.jpclett.0c02227
Abstract: For ligand-protected gold clusters, geometrical differences of gold cores and/or the presence of secondary gold core–ligand interactions influence their unique optical and electronic properties and can, in principle, be detected by spectral changes of gold core vibrations (phonon modes) in ultralow-frequency Raman spectroscopy. We report experimental and theoretical Raman spectra of Au8 clusters protected by phosphine ligands particularly in the “gold cluster fingerprint” region from 50 to 150 cm–¹ Raman shift (1.5 to 4.5 terahertz, THz). A characteristic core breathing mode observed at ca. 123 cm–¹ was sensitive to differences of core geometries. A new band was found at ca. 150 cm–¹, originating from a local strain on a polyhedral gold core caused by weak Au···π interactions. THz Raman spectroscopy can be utilized for metal nanoclusters to visualize core structural changes and Au···π interactions, which cannot be captured by single crystal X-ray analysis.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Type: article (author version)
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 加藤 優

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