Review: The self-assembly of semiconductor quantum dots or wires within the cavity of a zeolite or molecular-sieve host to form quantum supralattices has great potential in the development and study of organized systems with value in, for example, quantum electronics, nonlinear optics, optical data storage, and chemoselective sensing. The organization of inorganic, organometallic, and metal-carbonyl moieties on the internal surfaces of the hosts (e.g. see figure) is the basis of the work and the chemistry and its applications are reviewed.