Broadly Excited Red Long Persistent Luminescence from Hetero-Ligand MOFs

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Two MOFs with varied aggregation state are synthesized by a D–π–A-type ligand and monocyclic carboxylic ligand, which show red LPL of varying intensity after removal wide excitations from UV to white light at ambient conditions.

Language: Английский

Engineering Solvent‐Coordinated Heterometallic–Organic Frameworks for Wide‐Range Tuning of Ultralong Room Temperature Phosphorescence toward Time‐Resolved Anticounterfeiting

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Metal-organic frameworks (MOFs) have been proven promising ultralong room temperature phosphorescence (RTP) materials for anti-counterfeit due to their unique optical properties. However, it remains a major challenge achieve the desired phosphorescent properties limited regulatory methods and indistinct mechanism. Herein, coordination solvent second metal ion co-strategy is firstly proposed prepare seven robust heterometallic-organic (HMOFs) with two configurations: ZnMg/Ca-sol [sol = H2O, dimethylformamide (DMF), dimethylacetamide (DMA), formyldiethylamine (DEF)] ZnSr/Ba-H2O, exhibiting different RTP. The tunable lifetimes within 14.5-195.4 ms are achieved gradually by altering type of alkaline earth metals, solvent, hydrogen-bonding in HMOFs. Significantly, theoretical calculations reveal that promotion spin-orbit coupling heavy metals rigid constraint on skeleton result excellent balance between high quantum yield (ФP) long lifetime, especially ZnSr-H2O (6.8%, 195.4 ms). Depending wide-range tuning RTP great stability, HMOFs successfully applied spatial-time resolved anti-counterfeiting multi-level information encryption. This work may provide new approach designing target while resolving contradiction ФP lifetime.

Language: Английский

Engineering Solvent‐Coordinated Heterometallic–Organic Frameworks for Wide‐Range Tuning of Ultralong Room Temperature Phosphorescence toward Time‐Resolved Anticounterfeiting

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract Metal–organic frameworks (MOFs) have been proven promising ultralong room temperature phosphorescence (RTP) materials for anticounterfeit due to their unique optical properties. However, it remains a major challenge achieve the desired phosphorescent properties limited regulatory methods and indistinct mechanism. Herein, coordination solvent second metal ion costrategy is firstly proposed prepare seven robust heterometallic–organic (HMOFs) with two configurations, ZnMg/Ca‐sol [sol = H 2 O, dimethylformamide (DMF), dimethylacetamide (DMA), formyldiethylamine (DEF)] ZnSr/Ba‐H O , exhibiting different RTP. The tunable lifetimes within 14.5–195.4 ms are achieved gradually by altering type of alkaline earth metals, solvent, hydrogen‐bonding in HMOFs. Significantly, theoretical calculations reveal that promotion spin–orbit coupling heavy metals rigid constraint on skeleton result excellent balance between high quantum yield ( Ф P ) long lifetime, especially ZnSr‐H (6.8%, 195.4 ms). Depending wide‐range tuning RTP great stability, HMOFs successfully applied spatial‐time resolved anticounterfeiting multilevel information encryption. This work may provide new approach designing target while resolving contradiction lifetime.

Language: Английский