Analytical Sciences

Abstract − Analytical Sciences, 19(5), 651 (2003).

Ion-Transfer Voltammetry at a Polarized Room-Temperature Molten Salt |Water Interface
Hajime KATANO and Hirosuke TATSUMI
Department of Bioscience, Fukui Prefectural University, Matsuoka-cho, Fukui 910-1195, Japan
Tetraoctylammonium cation forms a room-temperature molten salt (RTMS) with 2,4,6-trinitrophenolate anion. The RTMS is immiscible with water (W) and forms a stable RTMS | W interface. It has been shown that the RTMS | W interface can be electrochemically polarized. A well-defined voltammetric wave due to the transfer of thiocyanate ion across the RTMS | W interface was observed within the potential window. This is the first example of a polarized RTMS | W interface.