2008 NSTI Nanotechnology Conference and Trade Show - Nanotech 2008 - 11th Annual

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TechConnect Summit
Clean Technology 2008

Synthesis and Characterization of Room Temperature Ionic Liquid (RTIL)-Protected Gold Nanoparticles

L.Y.S. Lee, K-M. Lam, W-L. Wong, K-Y. Wong
The Hong Kong Polytechnic University, HK

Keywords:
metal nanoparticle, ionic liquid

Abstract:
The synthesis and use of metal nanoparticles (NPs) has formed a major research area that attracted both academic and industrial interest. This research interest arises from their vast potential applications related to catalysis, (bio)sensors, drug delivery, and molecular markers. For past two decades, there have been reported numerous synthetic routes for these metal NPs, in attempts to modify their properties such as stability and solubility via the change of protecting ligands. Ionic liquids (ILs), usually consist of organic cation and charge-diffused inorganic anion, possess novel properties that can be easily tuned. This makes ILs a good candidate for NP protecting ligand. A simple synthetic method to prepare pyrrolidinium-based room temperature ionic liquid-protected gold nanoparticles (RTIL-AuNPs) was developed, based on the ligand exchange reaction. Transmission electron microscopy (TEM), UV-Vis spectroscopy, and FT-IR spectroscopy were used to characterize the RTIL-AuNPs. These RTIL-AuNPs exhibit a narrow size distribution and very good stability.


Nanotech 2008 Conference Program Abstract