Optical tags comprising rare earth metal-organic frameworks

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United States of America Patent

PATENT NO 11767468
SERIAL NO

17479710

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Abstract

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Optical tags provide a way to identify assets quickly and unambiguously, an application relevant to anti-counterfeiting and protection of valuable resources or information. The present invention is directed to a tag fluorophore that encodes multilayer complexity in a family of heterometallic rare-earth metal-organic frameworks (RE-MOFs) based on highly connected polynuclear clusters and carboxylic acid-based linkers. Both overt (visible) and covert (near infrared, NIR) properties with concomitant multi-emissive spectra and tunable luminescence lifetimes impart both intricacy and security. Tag authentication can be validated with a variety of orthogonal detection methodologies. The relationships between structure, composition, and optical properties of the family of RE-MOFs can be used to create a large library of rationally designed, highly complex, difficult to counterfeit optical tags.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA LLCP O BOX 5800 MS-0161 ALBUQUERQUE NM 87185

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Butler, Kimberly Albuquerque, US 12 83
Rohwer, Lauren E S Albuquerque, US 5 1
Sava, Gallis Dorina F Albuquerque, US 9 5

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