Abstract

A new ruthenium(II) porphyrin disulphide derivative, [Ru(Pds)(CO)], was obtained from ruthenium(II)(carbonyl)deuteroporphyrin(IX), [Ru(DPdc)(CO)] and cystamine. The interaction of this complex with nitric oxide Was Studied spectrophotometrically and a bathochromic shift of the charge transfer band and considerable change in the alpha and beta bands of the complex were observed. According to the IR spectrum, the product of this interaction is [Ru(DmDP)(NO+)(NO2-)]. [Ru(PdS)(CO)] was then self-assembled on polycrystalline gold and characterized by X-ray photoelectron spectroscopy. [Ru(Pds) (CO)] was also self-assembled oil gold electrode beads and its interaction with nitric oxide in aqueous solution was studied by cyclic voltammetry. A shift in the ruthenium redox process and a new irreversible cathodic peak at -0.59 V were observed, both indicating coordination of NO.