Size-Controlled Synthesis of Sub-10-nanometer Citrate-Stabilized Gold Nanoparticles and Related Optical Properties.
Institut Català de Nanociència i Nanotecnologia · Universitat Autònoma de Barcelona · +2 more institutions
Abstract
Highly monodisperse, biocompatible and functionalizable sub-10-nm citrate-stabilized gold nanoparticles (Au NPs) have been synthesized following a kinetically controlled seeded-growth strategy. The use of traces of tannic acid together with an excess of sodium citrate during nucleation is fundamental in the formation of a high number (7 × 1013 NPs/mL) of small ∼3.5 nm Au seeds with a very narrow distribution. A homogeneous nanometric growth of these seeds is then achieved by adjusting the reaction parameters: pH, temperature, sodium citrate concentration and gold precursor to seed ratio. We use this method to produce Au NPs with a precise control over their sizes between 3.5 and 10 nm and a versatile surface…
Citation impact
- FWCI
- 21.99
- Percentile
- 100%
- References
- 63
Authors
3- JPJordi Piella
Institut Català de Nanociència i Nanotecnologia, Universitat Autònoma de Barcelona
- NGNeus G. Bastús
Institut Català de Nanociència i Nanotecnologia
- VPVíctor PuntesCorresponding
Institut Català de Nanociència i Nanotecnologia, Institució Catalana de Recerca i Estudis Avançats, Vall d'Hebron Institut de Recerca
Topics & keywords
- Sodium citrate
- Surface plasmon resonance
- Nanoparticle
- Nucleation
- Colloidal gold
- Tannic acid
- Dispersity
- Nanotechnology