Chiral Ionic Liquid Monolayer-Stabilized Gold Nanoparticles: Synthesis, Self-Assembly, and Application to SERS
- 25 May 2010
- journal article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 26 (14), 12209-12214
- https://doi.org/10.1021/la101602a
Abstract
Chiral ionic liquid monolayer-stabilized gold nanoparticles were synthesized in a two-phase liquid−liquid system and found to self-assemble into ringlike structures at the air/water interface. Control experiments with long-chain ILs revealed that the molecular structure of the CIL significantly affects the formation of the gold nanoparticle ring structures. A possible mechanism based on Marangoni−Bénard convection in evaporating droplets was proposed. These gold nanoparticle structures were shown to yield a large SERS enhancement for Rhodamine 6G.Keywords
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