Electrochemical characteristics of a self-propagating molecular-based assembly.
The electrochemical properties of a metallosupramolecular network that undergoes reversible redox chemistry on indium-tin oxide (ITO)-coated glass substrates have been investigated. The redox-active osmium complexes are electrochemically accessible even for films with a thickness > 15 nm. The electrochemical data correlates well with our previously observed self-propagating growth process, for which the electron density for the assemblies remains constant during film growth. Electron-transfer rate constants obtained by potential step chronoamperometry experiments suggest an exceptionally low attenuation factor, β, of 0.013 ± 0.001 Å(-1). However, the intrinsically porous nature of the assembly could be to a large extent or even entirely responsible for such a low value.
Motiei
Leila
L
Department of Organic Chemistry, The Weizmann Institute of Science, 76100 Rehovot, Israel.
Lahav
Michal
M
Gulino
Antonino
A
Iron
Mark A
MA
van der Boom
Milko E
ME