Hydrotalcite-like, α-cobalt hydroxides intercalated with either chloride or anthraquinone-2-sulfonate (AQS2) were crystallized on self-assembled monolayers of 11-mercaptoundecanoic acid on gold as well as poly (acrylic acid) functionalized silicon substrates. These novel functional hybrid films were prepared by the direct nucleation and growth onto the substrate from homogeneous using a homogeneous hydrolysis of CoCl2 by hexamethylenetetramine in the presence of either NaCl or sodium anthraquinone-2-sulfonate. The intercalated α-cobalt hydroxide crystallites nucleate these carboxylic functionalized surfaces and grow with a preferred orientation. Electrochemical experiments on AQS2 intercalated α-Co(OH)2 on 11-mercaptoundecanoic acid functionalized Au thin films show that the intercalated AQS2 anions are still redox active within this oriented crystalline film.
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