Table 2.

List of properties of GNPs and their potential applications.

Properties of GNPs	Potential applications	Reference
SPR	Colorimetric, SERS based sensing	[6,30,31,32,33]
Photoluminescence Fluorescence enhancement Fluorescence quenching	Fluorescence sensing	[30,31,32,33,35]
Raman scattering enhancement	SERS by electromagnetic and chemical mechanism	[37]
Strong light scattering	Dynamic light scattering (DLS) assay	[38]
Easy surface modification	Molecular recognition in different sensing systems	[1,45,46,47,48,49,50]