Li, ZhenNuñez, RosarioLight, Mark E.Ruiz Sabín, EliseoTeixidor, FrancescViñas, ClaraRuiz-Molina, DanielRoscini, ClaudioGiner Planas, José2023-05-052023-05-052022-04-290897-4756https://hdl.handle.net/2445/197627Luminescent lanthanide metal−organic frameworks (Ln-MOFs) have been shown to exhibit relevant optical properties of interest for practical applications, though their implementation still remains a challenge. To be suitable for practical applications, Ln- MOFs must be not only water stable but also printable, easy to prepare, and produced in high yields. Herein, we design and synthesize a series of mCB-EuyTb1−y (y = 0−1) MOFs using a highly hydrophobic ligand mCBL1: 1,7-di(4-carboxyphenyl)-1,7-dicarba-closo- dodecaborane. The new materials are stable in water and at high temperature. Tunable emission from green to red, energy transfer (ET) from Tb3+ to Eu3+, and time-dependent emission of the series of mixed-metal mCB-EuyTb1−y MOFs are reported. An outstanding increase in the quantum yield (QY) of 239% of mCB-Eu (20.5%) in the mixed mCB-Eu0.1Tb0.9 (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.14 p.application/pdfengcc-by (c) Li, Zhen et al. , 2022http://creativecommons.org/licenses/by/3.0/es/LuminescènciaLligandsCristallsLuminescenceLigandsCrystalsinfo:eu-repo/semantics/article7305002023-05-05info:eu-repo/semantics/openAccess