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AssigneeUniversity of Pittsburgh—Of the Commonwealth System of Higher Education
InventorsStephane Petoud, Nathaniel L. Rosi, Kiley A. White, Demetra Anne Chengelis Czegan
Estimating the term…
Metal-organic frameworks (MOFs) are crystalline porous materials that include metal ions linked together into periodic structures via organic ligands. MOFs that contain lanthanide ions are a new class of visible and near-IR luminescent materials, suitable for a broad range of applications. For example, the MOF framework afforded by 2,5-dimethoxy-1,4-phenylene)di-2,1-ethenediyl]bis-carboxylate is associated with unusually long luminescence lifetimes. Thus, a complex of this ligand with a lanthanide provides a sharp emission profile, coupled with a comparatively long signal lifetime, for an unusually high luminescence. More generally, lanthanide-MOF systems exhibit several advantages that are ideal for barcoded materials, due to the photophysical attributes of lanthanide cations and the well-defined organization of the MOF structure.
A method for marking an object with a metal-organic complex, comprising:
A method of preparing a metal-organic complex, comprising:
A composition comprising (A) a metal-organic framework comprised of complexes between two or more different lanthanides and an organic ligand, wherein said ligand has multiple metal-binding sites and an electronic structure that accommodates a transfer of energy to said lanthanides, and wherein said complex, upon the transfer of energy to said lanthanides, emits electromagnetic radiation having emission maxima of at least 640 nm, and (B) at least one component selected from the group consisting of an adhesive and a binder;
A composition comprising (A) a complex of two or more different lanthanides and an organic ligand, wherein said ligand has multiple metal-binding sites and an electronic structure that accommodates a transfer of energy to said lanthanides, and wherein said complex, upon the transfer of energy to said lanthanides, emits electromagnetic radiation having emission maxima of at least 640 nm, and (B) at least one component selected from the group consisting of an adhesive and a binder, wherein said ligand is (4,4′-[(2,5-dimethoxy-1,4-phenylene)di-2,1-ethenediyl]bis-carboxylate).
Dependencies are inferred from the claim text.