Polymeric films of [FeII(CN)6-PtIV(NH3)4]n were prepared on optically transparent indium tin oxide (ITO) electrode surfaces via oxidative polymerization of the monomer [Pt(NH3)4]2[(NC)5Fe-CN-Pt(NH3)4-NC-Fe(CN)5]. Irradiation at 457 nm into the intervalence charge transfer band of the interfacial polymer causes the cleavage of bridging -CN- to Pt bonds, leading to the dissociation of polymeric film into shorter-chain [Fe-Pt]n oligomers, [Pt(NH3)4]2+ and [Fe(CN)6]3−. When photolysis is carried out with the modified interface immersed in an aqueous solution containing transition metal cations Mn+ (Mn+ = Ni2+, Fe2+, Mn2+, Cr3+), Mn+ reacts with photogenerated [Fe(CN)6]3− complexes to form mixed metal cyanometalates of the form [M-NC-Fe(CN)5]2− on the electrode surface. As a result, Mn+ is incorporated into the interfacial lattice only at the irradiated regions. The film after Mn+ incorporation is different in color compared to the original [Fe-Pt]n polymer film. Images may be developed on such a film by irradiating the sample through a mask. In this paper we report the formation and characterization of such multicomponent electrode surfaces. In addition, the potential applicability of these multicomponent electrodes as molecular electronic devices is discussed.
|Original language||English (US)|
|Number of pages||6|
|State||Published - Aug 1 1995|
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry