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Published on: January 15, 2012
Functional gold nanorods: synthesis, self-assembly, and sensing applications
Leonid Vigderman1, Bishnu P Khanal, Eugene R Zubarev
1Department of Chemistry, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Advanced Materials (Deerfield Beach, Fla.)
|June 29, 2012
Summary
Gold nanorods offer tunable optical and electronic properties. This review details their synthesis, functionalization, self-assembly, and diverse sensing applications, highlighting advancements in controllable assembly for enhanced detection.
Area of Science:
- Nanotechnology
- Materials Science
- Chemistry
Background:
- Gold nanorods exhibit unique optical and electronic properties influenced by their dimensions.
- These properties make them promising for various advanced applications.
Purpose of the Study:
- To provide a comprehensive review of gold nanorod synthesis, functionalization, self-assembly, and sensing applications.
- To discuss strategies for overcoming challenges in gold nanorod functionalization.
- To explore the impact of nanorod assembly on sensing capabilities.
Main Methods:
- Wet chemistry methods for single-crystalline and pentahedrally-twinned gold nanorods.
- Templated deposition for polycrystalline gold nanorods.
- Covalent and noncovalent functionalization strategies.
- Analysis of self-assembly into ordered structures.
Main Results:
- Detailed discussion of synthesis routes for different gold nanorod types.
- Effective strategies for overcoming surfactant-related functionalization issues.
- Demonstration of how controlled assembly enhances sensing performance.
- Exploration of refractive-index based sensing.
Conclusions:
- Gold nanorods are versatile nanomaterials with significant potential in sensing.
- Controllable self-assembly is key to maximizing their sensing capabilities.
- Further research into functionalization and assembly will unlock new applications.
