82838-49-1Relevant academic research and scientific papers
Photochemical ligand loss as a basis for imaging and microstructure formation in a thin polymeric film
Gould, Sharon,O'Toole, Terrence R.,Meyer, Thomas J.
, p. 9490 - 9496 (1990)
Ligand loss photochemistry occurs in thin polymeric films of poly[Ru(bpy)2(vpy)2]2+ (bpy is 2,2′-bipyridine, vpy is 4-vinylpyridine), poly[Ru(Me2bpy)2(vpy)2]2+ (Me2bpy is 4,4′-dimethyl-2,2′-bipyridine), and poly[Ru(Me4bpy)2(vpy)2]2+ (Me4bpy is 4,4′,5,5′-tetramethyl-2,2′-bipyridine). These films were formed by reductive electropolymerization of the corresponding 4-vinylpyridine complexes on Pt disk electrodes. Upon photolysis, the ruthenium-pyridyl bonds were cleaved and the polymer was lost, exposing the underlying substrate. The photochemical reaction was used to transfer an image to the films by using masking techniques. In a subsequent step, poly[Os(vbpy)3]2+ (vbpy is 4-methyl-4′-vinyl-2,2′-bipyridine), which is photochemically stable, was formed selectively in the exposed regions of the electrode by reductive electropolymerization. This procedure gave a laterally resolved, two-component, film-based structure in which there were discrete, spatially segregated regions of RuII and OsII. In a final step, the remaining film containing RuII was removed by photolysis. This procedure left an image of the original mask in the poly[Os(vbpy)3]2+ that remained.
