Abstract
In this work, we focus on the optical properties of the ruthenium complexes [Ru(phen)3]Cl2 and [Ru(bpy)3]Cl2 incorporated into biocompatible calcium phosphate films on porous Si substrates to both characterize the distribution of such species in the film as well as analyze their diffusion from the porous matrix upon aqueous exposure. For the latter measurements, photoluminescence spectroscopy is employed to monitor the changes in emission intensity for the both the calcium phosphate surface and surrounding aqueous environment as a consequence of diffusion from the film. In selected cases, visible absorption spectroscopy was also utilized to measure the appearance of a given complex in the surrounding solution. The effects of heating and anodic bias on the calcium phosphate/porous Si/Si substrate on the kinetics and available equilibrium concentrations of a given Ru complex have also been evaluated.
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Li, X., Coffer, J.L. Properties of Ruthenium Complex-Doped Calcium Phosphate/Porous Silicon Nanostructures. Journal of Cluster Science 14, 85–96 (2003). https://doi.org/10.1023/A:1024833319237
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DOI: https://doi.org/10.1023/A:1024833319237