Table 1.

Kinetic rate constants of the adsorption and desorption of Vn on SAMs-modified substrates.

SAMs	Average association rate constant (Kon) (M−1·s−1)	Average dissociation rate constant (Koff) (s−1)	Equilibrium dissociation constant (KD) (M)
COOH	2.77 × 103	3.62 × 10−8	1.31 × 10−11
NH2	1.39 × 104	1.11 × 10−4	7.96 × 10−9
CH3	6.09 × 103	3.09 × 10−4	5.08 × 10−8
OH	2.83 × 104	2.67 × 10−4	9.43 × 10−9