High‐Entropy Lanthanide Metal‐Organic Frameworks as Multifunctional Porous Scintillators for Radiation Detection and Dual‐Mode Uranyl Sensing

, advantageous over their monometallic analogues. The synergy between ultrahigh adsorption, "turn-on" photoluminescence (PL), and intense scintillating signal output portends unprecedented dual-mode, on-site detection of radionuclides in aqueous environments. This work establishes HE-Ln-MOFs as a promising platform for next-generation porous scintillators in advanced radiation detection technologies.