Guest Entrapment in Metal‐Organic Nanosheets for Quantifiably Tuneable Luminescence

Luminescent metal-organic frameworks (LMOFs) are promising materials for nanophotonic applications due to their tuneable structure and programmability. Yet, the 3D nature of LMOFs creates challenges stability, optical transparency, device integration. Metal-organic nanosheets (MONs) potentially overcome these limitations by combining benefits (MOFs) with an atomically thin morphology large planar dimensions. Herein, bottom-up synthesis few-layer ZIF-7-III MONs via facile low-energy salt-templating is reported. Employing [email protected] design, fluorophores Rhodamine B Fluorescein intercalated into ZIF-7 (Z7-NS) form light emissive systems exhibiting intense highly photostable fluorescence. Aggregation Förster resonance energy transfer, enabled MON framework, revealed as mechanisms behind By varying guest concentration, provide predictable quantified control over emission chromaticity a dual-guest Z7-NS material definition “emission fingerprint” – unique subset visible spectrum that can emit