Plasmonic Metal Oxide Nanocrystals via Surface Anchoring of Redox-Active Phosphorus Species

We demonstrate a general and simple postsynthetic method for the generation of plasmonic oxide nanocrystals via surface anchoring of redox-active phosphorus species. The processes are initiated by the reaction between tris­(trimethylsilyl)­phosphine and the surface hydroxyl groups, resulting in surf...

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Veröffentlicht in:Chemistry of materials 2021-07, Vol.33 (13), p.5290-5297
Hauptverfasser: Du, Hui, Li, Yang, Zhou, Ning, Pu, Chaodan, Yin, Jinglin, Kong, Xueqian, Tian, He, Jin, Yizheng
Format: Artikel
Sprache:eng
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Zusammenfassung:We demonstrate a general and simple postsynthetic method for the generation of plasmonic oxide nanocrystals via surface anchoring of redox-active phosphorus species. The processes are initiated by the reaction between tris­(trimethylsilyl)­phosphine and the surface hydroxyl groups, resulting in surface-anchored redox-active phosphorus species. The following redox reactions generate free electrons in oxide nanocrystals, accompanied by the valance-state changes of the surface-anchored P from −III to +V. The resulting nanocrystals show tunable plasmon resonance peaks in the near-infrared or mid-infrared regime. The postsynthetic redox chemistry demonstrated in this work shall inspire new design of methodologies for the development of plasmonic oxide nanocrystals.
ISSN:0897-4756
1520-5002
DOI:10.1021/acs.chemmater.1c01393