This paper describes the electrochemical properties, such as electrode reactivity, and interfacial capacitance of an anthracene/self-assembled monolayer (An/SAM) An electrode prepared through controllable immersion of the dodecanethiol (C12SH) SAM-Au electrode in a THF solution of anthracene (An). The C12SH SAM almost totally blocks heterogeneous electron transfer between the bare An electrode and Fe(CN)(6)(3-/4-) in solution, but adsorption of the An molecules onto the SAM-Au electrode restores electron transfer. The prepared An/SAM-Au electrode possesses good reactivity without a remarkable barrier to heterogeneous electron transfer. On the other hand, the electroactive form of the An/SAM-Au electrode can be converted back to the non-electroactive form by immersing the electrode into pure THE (c) 2008 Elsevier Ltd. All rights reserved.