Synthesis of Plasmonic Group‐4 Nitride Nanocrystals by Solid‐State Metathesis

Ceramic nanoparticles that exhibit a plasmonic response are promising next‐generation photonic materials. In this contribution, a solid‐state metathesis method has been reported for the synthesis of Group 4 nitride (TiN, ZrN, and HfN) nanocrystals. A high‐temperature (1000 °C) reaction between Group...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2019-03, Vol.58 (10), p.3147-3150
Main Authors: Karaballi, Reem A., Humagain, Govinda, Fleischman, Benjamin R. A., Dasog, Mita
Format: Article
Language:English
Subjects:
Crystals
Hafnium oxide
Magnesium
metamaterials
Metathesis
Nanocrystals
Nanoparticles
nitrides
Photonics
plasmonics
Powder
Refractivity
Resonance
Synthesis
Titanium dioxide
Zirconium dioxide
Zirconium nitrides
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Summary:Ceramic nanoparticles that exhibit a plasmonic response are promising next‐generation photonic materials. In this contribution, a solid‐state metathesis method has been reported for the synthesis of Group 4 nitride (TiN, ZrN, and HfN) nanocrystals. A high‐temperature (1000 °C) reaction between Group 4 metal oxide (TiO2, ZrO2, and HfO2) nanoparticles and magnesium nitride powder yielded nitride nanocrystals that were dispersible in water. A localized surface plasmonic resonance was observed in the near‐infrared region for TiN and in the visible region of light for ZrN and HfN nanocrystals. The frequency of the plasmon resonance was dependent on the refractive index of the solvent and the nanocrystal size. Ready to plassemble: The synthesis of TiN, ZrN, and HfN nanocrystals using solid‐state metathesis is reported. The nanocrystals, which are dispersible in water, show localized surface plasmonic resonances in the near infrared (TiN) and visible region (ZrN, HfN) of light. This makes them ideal for applications like photothermal therapy or plasmon‐enhanced sensing.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201813134