Electrochemical Control of Threshold Value of Molecular Valve Consisting of Poly(acrylic acid) Gel

摘要

A molecular valve, consisting of a poly(acrylic acid) gel-coated Au mesh and a Au mesh working electrode, allowed electrochemi-cally control of a concentration where the valve opens. At open circuit and when +0.9 V vs. Ag/AgCl was applied to the Au mesh electrode, the valve opened at concentration higher than 3-4 x 10~(-4)M. At -0.7V it increased to 9 x 10~(-4)M. On the other hand, it remained virtually constant for Ca~(2+) at those potentials.