Single-Step Biofriendly Synthesis of Surface Modifiable, Near-Spherical Gold Nanoparticles for Applications in Biological Detection and Catalysis
| Autor: | Jesse W. Evans, Chad B Willis, Rajalingam Dakshinamurthy, Shivendra V. Sahi, Jane J. Bartonojo, Vivek D. Badwaik |
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| Rok vydání: | 2011 |
| Předmět: |
Surface Properties
Reducing agent Metal Nanoparticles Nanoparticle Nanotechnology Ligands Catalysis chemistry.chemical_compound Escherichia coli Electrochemistry General Materials Science Particle Size Spectroscopy Aqueous solution Chemistry Rational design Green Chemistry Technology Surfaces and Interfaces Buffer solution Condensed Matter Physics Glucose Reducing Agents Colloidal gold Surface modification Gold Particle size |
| Zdroj: | Langmuir. 27:5549-5554 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | There is an increased interest in understanding the toxicity and rational design of gold nanoparticles (GNPs) for biomedical applications in recent years. Such efforts warrant reliable, viable, and biofriendly synthetic methodology for GNPs with homogeneous sizes and shapes, particularly sizes above 30 nm, which is currently challenging. In the present study, an environmentally benign, biofriendly, single-step/single-phase synthetic method using dextrose as a reducing and capping agent in a buffered aqueous solution at moderate temperature is introduced. The resulting GNPs are near-spherical, stable, catalytically active, place exchangeable, and water-soluble within the size range of 10-120 nm. The added advantage of the biologically friendly reaction medium employed in this new synthetic approach provides a method for the direct embedment/integration of GNPs into biological systems such as the E. coli bacterium without additional capping ligand or surface modification processes. |
| Databáze: | OpenAIRE |
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