ABSTRACT -2 Surface Confined Metal-Organic Architectures as Efficient Electrochromic Materials Sreejith Shankar, Michal Lahav and Milko E. van der Boom Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel email: [email protected] Layer-by-Layer (LbL) deposition in combination with metal-ligand coordination has been a powerful tool for generation of functional architectures.1 Such systems might find interesting applications ranging from molecular electronics, display and sensor technologies, to solar cells and data storage. More significantly, owing to their electrochromic behavior, they are promising candidates for use in smart windows and display devices. Coordination Polymer Network Films (CPNFs) constructed from electrochromic materials of metal-organic nature, combine advantages of organic and inorganic thin films, including long range processibility, transmittance modulation, and high coloration efficiencies. Our CPNFs exhibit high redox stability and low switching time. The generation and properties of redox active CPNFs on various substrates2 were investigated and by varying the organic ligands, fine control was achieved over their growth and electrochemical properties. We also fabricated solid-state electrochromic devices (Single Electrochrome Laminated Devices). 1. (a) de Ruiter, G.; Lahav, M.; Keisar, H.; van der Boom, M. E. Angew. Chem., Int. Ed., 2013, 52, 704-709; (b) Motiei, L.; Feller, M.; Evmenenko, G.; Dutta, P.; van der Boom, M. E. Chem Sci., 2012, 3, 66-71; (c) Motiei, L.; Sassi, M.; Kaminker, R.; Evmenenko, G.; Dutta, P.; Iron, M. A.; van der Boom, M. E. Langmuir, 2011, 27, 1319-1325; (d) Choudhury, J.; Kaminker, R.; Motiei, L.; de Ruiter, G.; Morozov, M.; Lupo, F.; Gulino, A.; van de Boom, M. E. J. Am. Chem. Soc., 2010, 132, 9295-9297. 2. (a) van der Boom, M. E.; Lahav, M.; Shankar, S. US Patent 61/906,565, 2013; (b) Shankar, S.; Lahav, M.; van der Boom, M. E. Manuscript in preparation.
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