Architectonic Quantum Dot Solids

摘要: Three things largely determine the electronic properties of a crystal:  energy levels atoms or lattice sites, coupling between adjacent and symmetry solid. Imagine being able to control each these separately, therefore “design” solid with prescribed set properties. For an atomic solid, this would amount tune electronegativity atom, strength covalent interactions within lattice, choose crystal structure. While chemistry periodic table does not permit such control, “artificial atoms”,1 quantum dots (QDs), does. In Account, we will discuss one example “designing” unique property into QD This property, which is ability reversibly pass through metal−insulator (MI) transition under ambient conditions, something that has been previously demonstrated for more traditional A two-dimensional (2D) hexagonal superlattice organically passivated silver QDs was fabricated as Langmuir monolayer. Selecting particular size controlled (super)lattice site energies. The coarsely by selection organic surface passivant, precisely compressing using technique. By title “Architectonic2 Quantum Dot Solids”, emphasize many collective were rationally designed material.