Water-Stable Carborane-Based Eu<sup>3+</sup>/Tb<sup>3+</sup> Metal–Organic Frameworks for Tunable Time-Dependent Emission Color and Their Application in Anticounterfeiting Bar-Coding
Zhen Li, Rosario Núñez, Mark E. Light, Eliseo Ruíz, Francesç Teixidor, Clara Viñas, Daniel Ruiz‐Molina, Claudio Roscini, José Giner Planas
Abstract
(69.2%) is achieved, along with an increased and tunable lifetime luminescence (from about 0.5 to 10 000 μs), all of these promoted by a highly effective ET process. The observed time-dependent emission (and color), in addition to the high QY, provides a simple method for designing high-security anticounterfeiting materials. We report a convenient method to prepare mixed-metal Eu/Tb coordination polymers (CPs) that are printable from water inks for potential applications, among which anticounterfeiting and bar-coding have been selected as a proof-of-concept.
Topics & Concepts
LanthanideLuminescenceMetal-organic frameworkQuantum yieldMaterials sciencePolymerMetalBar (unit)Energy transferNanotechnologyChemistryPhysical chemistryFluorescenceOptoelectronicsOrganic chemistryChemical physicsPhysicsIonAdsorptionMeteorologyQuantum mechanicsMetallurgyComposite materialMetal-Organic Frameworks: Synthesis and ApplicationsBoron Compounds in ChemistryLanthanide and Transition Metal Complexes