Molecule-mimetic chemistry and mesoscale self-assembly

Molecules are structured aggregates of atoms joined by chemical bonds; crys tals are aggregates of molecules, interacting covalently or noncovalently. The work described in this Account uses molecules, crystals, and other form s of atomic/molecular matter to suggest principles that can be used in gene rating structured aggregates df millimeter-scale components, interacting th rough capillary interactions. The properties of these aggregates-that is, t heir "chemistry"-mimic aspects of the chemistry of molecules.