Selective electroless attachment of contacts to electrochemically-active molecules

摘要

A solution-based method for attaching metal contacts to molecular films is described. The metal contacts are attached to functional groups on individual molecules in the molecular film. The chemical state of the functional group is controlled to induce electroless metal deposition preferentially at the functional group site. The functionalized molecules may also be patterned on a surface to give spatial control over the location of the metal contacts in a more complex structure. Spatial control is limited only by the ability to pattern the molecular film. To demonstrate the feasibility of this concept, self-assembled monolayers of model, molecular-electronic compounds have been prepared on gold surfaces, and these surfaces were subsequently exposed to electroless deposition plating baths. These samples exhibited selective metal contact attachment, even on patterned surfaces.