eta super(1)-Allypalladium Complexes with Tridentate PNP' Ligand for the Assembly of Modified Screen Printed Electrodes: an Electrochemical Study

Specific Pd-based organometallic complex, in particular the [Pd( eta super(1)-CH sub(2) --CH=CH sub(2))(P--N--P')]B F sub(4) was used for the assembly of chemically modified Screen Printed Electrodes (SPEs) and their electrochemical reactivity was also investigated. For this purpose potassium ferricyanide, hexaammineruthenium(III) chloride, sodium hexachloroiridate-(III) hydrate, ascorbic acid (AA), uric acid (UA), acetaminophen (Ac), guanine (G) and adenine (A) were used to study the electron-transfer processes, which occurred at modified SPEs, fabricated by using the [Pd( eta super(1)-CH sub(2) --CH=CH sub(2))(P--N--P')]B F sub(4), applying the drop casting procedure. Interesting results were obtained in the case of the guanine (G) quantitative detection, especially in terms of a wide range of concentration (2.5-40nM), an high sensitivity (of 49.0AM super(-1)cm super(-2)), a low detection limit (LOD=1.0nM) and a fast response time (of t=2s). The intra-electrode reproducibility (RSD%) was