Growth of Oriented Thin Films of Intercalated alpha-Cobalt Hydroxide on Functionalized Au and Si Substrates

Journal article

Hydrotalcite-like, α-cobalt hydroxides intercalated with either chloride or anthraquinone-2-sulfonate (AQS2) were crystallized on self-assembled monolayers of 11-mereaptoundeeanoic 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 CoCl 2 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. © 2009 American Chemical Society.

Authors: Lee, J; Du, Y; O'Hare, D

• Publication status: Published
• Journal: CHEMISTRY OF MATERIALS
• Volume: 21
• Issue: 5
• Pages: 963-968
• Publication date: 2009-03-10
• DOI: 10.1021/cm802828z
• EISSN: 1520-5002
• ISSN: 0897-4756
• Language: English