Table 1. Equilibrium constants for PAH-His and imprinted and non-imprinted LbL films from different methods.

Process	Method	Binding constant	logK
PAH-His (solution)	UV-Visible	K 1 = 8.43 x 103, K 2 = 2.63 x 104	K 1 = 3.93, K 2 = 4.42
Non-imprinted - LbLA	QCM (from Langmuir isotherm)	K 1 = 1.04 x 103	K 1 = 3.02
Imprinted - LbLB	QCM (from Langmuir isotherm)	K 1 = 7.24 x 103	K 1 = 3.86