Enantioselective adsorption of ferrocene-modified glutamic acids on helical poly(L-glutamic acid) self-assemblies at gold electrodes

Abstract

A novel poly(l-glutamic acid) (PLGA) self-assembled monolayer was prepared on an Au electrode. The conformational transition of the PLGA segment betweenα-helix and coil could be electrochemically monitored by use of a redox couple of Fe(CN)₆^3–/4– . The helical PLGA monolayer was found to capture ferrocene-modified glutamic acids enantiomerically by means of an electron transfer reaction of the surface-confined ferrocenyl moiety.