The 1-aza-15-crown 5-ether functional group can be incorporated into polymer Langmuir-Blodgett (LB) films as a comonomer of N-dadecylacrylamide. The surface pressure-area isotherms of the copolymers indicated the formation of the stable condensed monolayers on the air-water interface. The copolymer monolayers could be transferred onto solid substrates by the LB technique (Y-type deposition). The result of voltammetric measurement indicated that the functionalized electrodes covered with copolymer monolayers could collect the Ag+ by soaking them in the AgNO3 aqueous solution.