A new route to produce efficient surface-enhanced Raman spectroscopy substrates: gold-decorated CdSe nanowires

摘要: Surface-enhanced Raman spectroscopy is a popular tool for the detection of extremely small quantities target molecules. Au nanoparticles have been very successful in this respect due to local enhancement light intensity caused by their plasmon resonance. Furthermore, are biocompatible, and substances can be easily attached surface. Here, we demonstrate that Au-decorated CdSe nanowires when employed as SERS substrates lead an large 105 with flat surfaces. In case hybrid metal–CdSe nanowires, nucleates preferably on lattice defects at lateral facets which leads homogeneous distribution nanowire, efficient quenching nanowire luminescence. Moreover, size well controlled via AuCl3 concentration fabrication process. We effectiveness our two substances, namely, cresyl-violet rhodamine-6G. fabricated low cost wet-chemical synthesis. deposition onto various substrates, functionalization these wires straightforward traditional markers.