ELECTROCHEMICAL ELABORATION OF THIN-FILMS OF POLY[RUII(L)(CO)2CL2] (L= 4-(2-PYRROL-1-YLETHYL)-4'-METHYL-2,2'-BIPYRIDINE OR (3-PYRROL-1-YLPROPYLOXY)CARBONYL)-2,2'-BIPYRIDINE) - PHOTOCHEMICAL PROPERTIES AND PHOTOIMAGING
Mn. Collombdunandsauthier et al., ELECTROCHEMICAL ELABORATION OF THIN-FILMS OF POLY[RUII(L)(CO)2CL2] (L= 4-(2-PYRROL-1-YLETHYL)-4'-METHYL-2,2'-BIPYRIDINE OR (3-PYRROL-1-YLPROPYLOXY)CARBONYL)-2,2'-BIPYRIDINE) - PHOTOCHEMICAL PROPERTIES AND PHOTOIMAGING, Journal of physical chemistry, 97(22), 1993, pp. 5973-5979
Thin films of poly[Ru(L)(CO)2Cl2] complexes (L = 4-(2-pyrrol-1-ylethyl
)-4'-methyl-2,2'-bipyridine (L1) or ((3-pyrrol-1-ylpropyloxy)carbonyl)
-2,2'-bipyridine (L2)) have been prepared by anodic electropolymerizat
ion of the corresponding monomeric complexes on platinum and indium-ti
n oxide (ITO) electrodes. The electrochemical and spectroelectrochemic
al properties of these films have been investigated in CH3CN. Photolys
is at 366 nm of the films immersed in CH3CN leads to successive photos
ubstitutions of the two CO ligands and of the one Cl- ligand by CH3CN
for the poly complex with L = L1 while only the first two photosubstit
utions occur for L = L2. On the basis of the photochemistry (mono-CH3C
N photosubstitution essentially), images can be created in the films b
y using masking techniques. In a subsequent step, the unphotolyzed are
a can be removed from the electrode surface by electrolysis. This proc
edure left a spacially controlled image of the original mask as a film
of poly[Ru(L)(CO)(CH3CN)Cl2].