Polymers that "click": A polymer film is obtained by the CuI-catalyzed Sharpless click reaction between two polymers, bearing either azide or alkyne groups, both present simultaneously in a CuII solution (see picture). The CuI morphogen is generated at an electrode by applying an adequate potential. This concept can be extended to supramolecular films formed by coordination complexes.

Full Reference :
Electrochemically Triggered Assembly of Films: A One-Pot Morphogen-Driven Buildup
G. Rydzek, L. Jierry, A. Parat, J.-S. Thomann, J.-C. Voegel, B. Senger, J. Hemmerl,
A. Ponche, B. Frisch, P. Schaaf, F. Boulmedais.
Angew. Chem. Int. Ed. 2011, 50, 4374 -4377
Link :
Angewandte Chemie :
http://onlinelibrary.wiley.com/doi/10.1002/anie.201007436/abstract