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Lanthanide metal–organic frameworks are of great interest in the development of photoluminescence (PL) materials owing to their structural tunability and intrinsic features of lanthanide elements. However, there exists some limitations arising from poor matching with metal ions, thereby exhibiting a weak ligand‐to‐metal energy transfer (LMET) process. Here we demonstrate a pressure‐treated strategy for achieving high PL performance in green‐emitting Tb(BTC)(H2O)6. The PL quantum yield of pressure‐treated sample increased from 50.6 % to 90.4 %. We found that the enhanced hydrogen bonds locked the conjugated configuration formed by two planes of carboxyl group and benzene ring, enabling the promoted intersystem crossing to effectively drive LMET. Moreover, the optimized singlet and triplet states also validated the facilitated LMET process. This work opens the opportunity of structure optimization to improve PL performance in MOFs by pressure‐treated engineering. [ABSTRACT FROM AUTHOR]

Lanthanide metal–organic frameworks are of great interest in the development of photoluminescence (PL) materials owing to their structural tunability and intrinsic features of lanthanide elements. However, there exists some limitations arising from poor matching with metal ions, thereby exhibiting a weak ligand‐to‐metal energy transfer (LMET) process. Here we demonstrate a pressure‐treated strategy for achieving high PL performance in green‐emitting Tb(BTC)(H2O)6. The PL quantum yield of pressure‐treated sample increased from 50.6 % to 90.4 %. We found that the enhanced hydrogen bonds locked the conjugated configuration formed by two planes of carboxyl group and benzene ring, enabling the promoted intersystem crossing to effectively drive LMET. Moreover, the optimized singlet and triplet states also validated the facilitated LMET process. This work opens the opportunity of structure optimization to improve PL performance in MOFs by pressure‐treated engineering. [ABSTRACT FROM AUTHOR]

GLO:44U/25nov22:anie202215826-toc-0001.jpg PHOTO (COLOR): . gl GLO:44U/25nov22:anie202215826-toc-0001.jpg PHOTO (COLOR): . gl B A pressure-treatment strategy b for achieving high photoluminescence performance in a green-emitting Tb-based metal-organic framework is reported by Xinyi Yang, Qianrong Fang, Banglin Chen, Bo Zou et al. in their Research Article (e202210836). Fluorescent Monochromaticity, Green Photoluminescence Enhancement, Lanthanide Metal-Organic Frameworks, Ligand-to-Metal Energy Transfer, Pressure-Treated Engineering Cover Picture: Maximized Green Photoluminescence in Tb-Based Metal-Organic Framework via Pressure-Treated Engineering (Angew. [Extracted from the article]

Keywords: Fluorescent Monochromaticity; Green Photoluminescence Enhancement; Lanthanide Metal-Organic Frameworks; Ligand-to-Metal Energy Transfer; Pressure-Treated Engineering EN Fluorescent Monochromaticity Green Photoluminescence Enhancement Lanthanide Metal-Organic Frameworks Ligand-to-Metal Energy Transfer Pressure-Treated Engineering 1 1 1 11/22/22 20221125 NES 221125 B Die Photolumineszenzausbeute b in einem grün-emittierenden metallorganischen Gerüst auf Tb-Basis lässt sich mittels Druckbehandlung steigern, wie Xinyi Yang, Qianrong Fang, Banglin Chen, Bo Zou und Mitarbeiter in ihrem Forschungsartikel berichten (e202210836). Die verstärkten Wasserstoffbrücken verriegeln die konjugierte Konfiguration und ermöglichen Intersystem-Crossing, was den Metall-zu-Ligand-Energietransfer beschleunigt. Fluorescent Monochromaticity, Green Photoluminescence Enhancement, Lanthanide Metal-Organic Frameworks, Ligand-to-Metal Energy Transfer, Pressure-Treated Engineering. [Extracted from the article]