Journal
RSC ADVANCES
Volume 8, Issue 33, Pages 18442-18450Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra03523g
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Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) [2017R1A2B3009135]
- Future Material Discovery Program through the National Research Foundation of Korea (NRF) [2016M3D1A1027666]
- Nano Material Technology Development Program through the National Research Foundation of Korea (NRF) [2016M3A7B4910]
- International Energy Joint R&D Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20168510011350]
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The benefit of introducing gold nanoparticles is due to the plasmon relaxation process. The plasmon decay induces various phenomena such as near-field enhancement, hot electron injection, and resonance energy transfer. Shape-controlled octahedral gold nanoparticles can maximize the efficiency of these processes. For practical purposes, a high-coverage decoration method, comparable to physical vapor deposition on a metal oxide semiconductor nanostructure, is indispensable. However, the ligand exchange reaction to attach octahedral gold nanoparticles is limited in aqueous solution due to the inactivity of the gold (111) surface as a result of a densely-packed cetyltrimethylammonium bilayer structure. Herein, we report a controllable high-coverage surface decoration method of octahedral gold nanoparticles on the targeted semiconductor nanostructures via phase transfer by an organic medium with thiolated-polyethylene glycol. Our results deliver an innovative platform for future plasmonic gold nanoparticle applications.
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