Table 1.

Thermodynamic parameters obtained from ITC (isothermal titration calorimetry) data fitted by a single site binding model for the titration of MV solution (1 mM) into WP6 solution (0.1 mM) at different pH values.

pH	ka/M−1	n	ΔH/kJ mol−1	ΔS/J mol−1 K−1
7.8	(1.53 ± 0.39) × 106	0.92 ± 0.07	−18.2 ± 1.0	57.2 ± 1.6
4.8	(1.64 ± 0.42) × 105	1.01 ± 0.02	−17.5 ± 1.0	40.9 ± 5.4