Table 2.

Ratio of XPS peak integral area between S and Au atom (S/Au value) of different SAMs.

DSS6	DSS6G	DSS9	DSS9G	COOH	OH
0.056±0.004	0.057±0.003	0.069±0.005	0.072±0.006	0.189±0.003	0.172±0.004