Gold Nanostars: Synthesis, Optical and SERS Analytical Properties

16 pags., 7 figs., 1 tab.
Goldnanostars are among the most efficient plasmonic nano-materials for optical sensing with surface enhanced Ramans cattering. In recent years,goldnanostars have increased relevance in physics,analytical chemistry, environmental science,biology and medicine,and in particularin sensing and therapy. These colloid scan sustain ultra strong electromagnetic fields which allow their use as single particles optical enhancers;are colloidally stable and may have a marked catalytical activity. Due to their exotic shape,these colloids present characteristic optical and reactive behaviors. Here,we briefly discuss the optical properties, the synthetic routes and the analytical applications of these nanoparticles.
This work is supportedby the Ministeriode Ciencia Innovacion/AEI and the European Union Next Generation /PRTR(PID2020-120306RB-I00 and PDC2021-121787-I00),the AGAUR (2017SGR883),the Universitat Rovira i Virgili (2021PFR-URV-B2-02), the Cluster of Excellence’ Advanced Imaging of Matter’of the Deutsche Forschungsgemeinschaft (DFG)– EXC 2056 – project ID390715994and the ENSEMBLE3 project(GA No. MAB/2020/14) Foundation for Polish Science-European Union (GA.No.857543)