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The continuous scaling down of device size in integrated circuits (ICs) has led to many questions about the limitations (lithographic, physical, or economic) of top-down developments of microelectronic devices. On the other hand, bottomup technologies using molecules as single data-processing devices are enormously promising in terms of storage and data-handling density, and there are reports on molecular wires, switches, rectifiers, and storage elements which, in principle, could form the basis of future molecular electronics.[1] Nevertheless any synthetic strategy towards such molecules remains useless for molecular devices unless they are ordered in a suitable and accessible way so that their state can be probed. The most promising architecture in molecular electronics is a hybrid system in which a dense array of molecular devices is hosted on a silicon-based microelectronic circuit.[2]

In the last decade, it …