Table 1. Grafting densities (chains nm⁻²) of polystyrene ligands on Au NCs estimated from TGA.

Core diameter	OLAM	PS-SH (1.1 k)	PS-SH (1.5 k)	PS-SH (3.0 k)	PS-SH (5.0 k)	PS-SH (11.5 k)	PS-SH (20.0 k)
3.8 nm Au	5.60	2.62	—	2.25	1.71	1.08	—
4.5 nm Au	5.75	2.16	—	2.28	1.89	—	—
7.6 nm Au	4.92	—	2.39	1.79	1.27	0.95	0.83

OLAM, oleylamine; PS-SH, thiol-terminated polystyrene; TGA, thermal gravimetric analysis.

The estimated error is less than 10% based on multiple runs with the same sample.