We discuss our recently developed method to selectively functionalize mixed ligand gold nanoparticles at two specific
defect points in the ligand shell and to join the nanoparticles together into chains by placing reactive molecules at those
two points. Here we use infrared spectroscopy to confirm that the process of functionalizing those defect points rapidly
reaches equilibrium. In addition, we demonstrate the quantitative reproducibility of the chaining reaction, and we discuss
the case in which we perform the same functionalization procedure on homoligand nanoparticles.