Hg. Hong, VOLTAMMETRIC BEHAVIORS OF CHEMICALLY-MODIFIED ELECTRODES BASED ON ZIRCONIUM PHOSPHONATE FILM, Bulletin of the Korean Chemical Society, 16(9), 1995, pp. 886-891
Electroactive monolayers based on zirconium(IV) phosphonate film were
prepared on gold and tin oxide electrodes by sequential layer-by-layer
depostion technique. High transfer coefficient values and surface cov
erages of surface bound redox molecules were obtained from the electro
chemical measurements of heterogeneous electron transfer rates for mon
olayer modified electrodes. 1,10-Decanediylbis(phosphonic acid) (DBPA)
monolayer as insulating barrier was effective in blocking electron tr
ansfer. However, these film modified oxide electrode shows voltammetri
c behavior of diffusion/permeation process taking place at very small
exposed area of modified electrode through channels due to structural
defects within film when a very fast redox couple such as Ru(NH3)(6)(3
+) is hired.