SERS Characterization of the Indocyanine-Type Dye IR-820 on Gold and Silver Nanoparticles in the Near Infrared

Table 2

Analytical SERS-EF (AEF) for different concentrations of IR-820 on AgNPs and AuNPs calculated for three different bands. = 1064 nm.

Metal	IR-820 concentration (μmol L^−1)	SERS wavenumber (cm^−1)	AEF
Ag	100	944	33
		1122	23
		1522	30
	10	944	271
		1122	173
		1522	257
	1	944	2764
		1122	1809
		1522	2810
	0.1	944	4270
		1122	2915
		1522	4013
Au	100	941	11
		1122	9
		1523	9
	10	941	63
		1122	39
		1523	86