Dynamic multi-color long-afterglow and cold-warm white light through phosphorescence resonance energy transfer in host-guest metal-organic frameworks

Host–Guest Metal–Organic Frameworks-Based Long-Afterglow Luminescence Materials

“…Liu et al [75] doped Eosin Y disodium salt (EY2) and Rhodamine B (RhB) dye into Cd DMF, which is expected to be used for the white light illumination of LEDs. Wang et al [94] prepared two MOFs based on the multi dentate ligand 2-hydroxynicotinic acid with multiple nuclear clusters, which exhibit white light and long-lasting luminescence, and have potential applications in lighting and safety systems.…”

“…Reprinted (adapted) with permission from[60]. Copyright 2016 Wiley-VCH.Liu et al[75] designed a new class of Cd-MOFs using 4,5-imidazole dicarboxylic acid (IMDC) as the ligand at 140 °C for 72 h. The experimental results showed that the incorporation of N, N-dimethylformamide (DMF) into MOF (Cd-DMF) exhibited a dual-phosphorescence emission, which occurred through a combination of ligand-to-ligand charge transfer (ca.560 nm, τ = 187.0 ms) and ligand self-emission (ca. 530 nm, τ = 196.0 ms) due to structural distortion.…”

Encapsulation engineering of porous crystalline frameworks for delayed luminescence and circularly polarized luminescence

“…In this case, MOFs feature intrinsic advantages as containers to construct host–guest systems for the generation, enhancement and regulation of phosphorescence. 270–273 On the one hand, MOFs can boost the rigidification of phosphorescence ligands and minimize the nonradiative transition of triplet excitons. 274–276 On the other hand, the phosphorescence emitters as guests encapsulated in MOFs can efficiently reduce the aggregation-caused quenching (ACQ) effect and restrict the vibration and motion of the guest molecules to suppress nonradiative relaxations.…”

A fluorescence–phosphorescence dual-emissive Cu3(pyrazolate)3 complex with highly tunable emission colours for anticounterfeiting and temperature sensing

“…Widely adjustable emission colours are one of the most concerned aspects for advanced luminescent coordination assemblies, related to a series of intriguing applications, including solid-state lighting, full-colour flat-panel displays, sensors, information encryption, photonic communication, and optical memory. 1–12 To prevent the drawbacks of multiphase emitters ( e.g. , phase separation and colour variation), single-phase coordination materials with separated dual or multiple emission bands whose relative intensities are sensitive to external stimuli ( e.g.…”