The morphology and composition of metallic nanoparticles (NPs) determine their optical response, so finely controlling them at the single particle level is a key to achieve tailored functionalities.
In a recent publication by Luciana Martinez et al. we show that the plasmon-driven growth of Au NPs can be monitored in real time through photoluminescence measurements. This enabled the closed-loop control of the growth, and the tuning of the emission maximum of single NPs between 550 and 580 nm with a precision of 2–3 nm. In comparison to controlling the growth by irradiation time and/or reaction conditions, the closed-loop control delivers superior reproducibility and a three to fourfold higher precision in the final properties of the NPs.
Congratulations Luciana and the whole team!
- Luciana P. Martinez, Julian Gargiulo, Mariano Barella, Ianina L. Violi, Fernando D. Stefani
“Fine tuning the optical properties of single Au nanoparticles by plasmon-driven growth in closed-loop control”
