Circularly Polarized Luminescence of Tetradentate-Ligand-Based Chiral MOFs: Structural Evidence of Chirality Inversion

Fu, Hong-Ru; Ren, Dan-Dan; Zhang, Kun; Zhang, Ruo-Yu; Lu, Xiao-Yan; Wu, Ya-Pan; Aznarez, Francisco; Ding, Qing-Rong; Ma, Lu-Fang; Li, Dong-Sheng

doi:10.1021/acsmaterialslett.4c00619

Cited by 10 publications

(2 citation statements)

References 57 publications

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“…As organic-inorganic hybrid materials, MOFs can provide luminescence in groups, and charge transfer between metals and ligands can cause a specific luminescence [36,37]. Compared with only inorganic and organic long-afterglow materials, MOFs are emerging as room-temperature phosphorescence (RTP) materials because of their intrinsic structure features [38]; for example, high-crystalline frameworks [39], various metal cluster units [40], strong coordination interactions between metal and organic ligands [41] and the controllable formation of dense frameworks [42]. All of them help to accelerate triplet generation and produce long-afterglow emissions.…”

Section: Introductionmentioning

confidence: 99%

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

Zhang,

Gu,

Zhang

2024

Molecules

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Long-afterglow materials have a broad of applications in optoelectronic devices, sensors, medicine and other fields due to their excellent luminescent properties. The host-guest long-afterglow MOFs material combines the advantages of multi-component characteristics and the stability of MOFs, which improves its luminous performance and expands its other properties. This review introduces the classification, synthesis and application of host-guest MOFs materials with long afterglow. Due to their rigid frames and multi-channel characteristics, MOFs can load common guest materials including rare earth metals, organic dyes, carbon dots, etc. The synthesis methods of loading guest materials into MOFs include solvothermal synthesis, post-encapsulation, post-modification, etc. Those long-afterglow host-guest MOFs have a wide range of applications in the fields of sensors, information security and biological imaging.

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Section: Introductionmentioning

confidence: 99%

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

Zhang,

Gu,

Zhang

2024

Molecules

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“…Adsorption is considered to be one of the most promising methods to address water pollution, owing to the characteristics of low energy consumption, eco-friendliness, and cost-effectiveness . Traditional adsorbents, such as zeolites, clay, mesoporous carbon, and metals oxides, often suffer from slow adsorption kinetics, low adsorption selectivity, and capacities, which stems from their simple composition and lack of structural and functional tunability. ,− To achieve better adsorption performance for uranium, adsorbents with structural and functional tunability are highly desired, and adsorbent design with multiple factors should be considered, including surface area, porosity, and amount of adsorption sites. − Bearing this in mind, metal–organic frameworks (MOFs), a kind of crystalline hybrid porous material with a large surface area, densely populated chelating groups, and tunable pore structures, have been developed . The precisely designable and tailorable structures and components in MOFs are convenient to realize high performance in uranium extraction. − Amidoxime groups can be purposefully incorporated into UiO-66-NH-(AO) by a postsynthetic strategy, which showed good selectivity for uranium even in the presence of high concentrations of VO 2 2+ , Fe 3+ , Mg 2+ , Ca 2+ , and Zr 4+ .…”

Section: Introductionmentioning

confidence: 99%

Decorating Cage-Shaped Cavities with Carboxyl Groups on Two-Dimensional MOF Nanosheet for Trace Uranium(VI) Trapping

Yu,

Jiang,

Zhang

et al. 2024

Inorg. Chem.

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The efficient and complete extraction of uranium from aqueous solutions is crucial for safeguarding human health from potential radiotoxicity and chemotoxicity. Herein, an ultrathin 2D metal−organic framework (MOF) nanosheet with cavity structures was elaborately constructed, based on a calix[4]arene ligand. The large molecular skeleton and cup-shaped feature of the calix[4]arene enabled the as-prepared MOFs with large layer separations, which can be readily delaminated into ultrathin single-layer (∼1.25 nm) nanosheets. The incorporation of permanent cavity structures to the MOF nanosheets can fully utilize their structural features of readily accessible adsorption groups and exposed surface area in uranium removal, reaching ultrafast adsorption kinetics; the functionalized cavity structure endowed MOF nanosheets with the ability to preconcentrate and extract uranium from aqueous solutions with ultrahigh efficiencies, even at extremely low concentrations. As a result, relatively high removal ratios (>95%) can be achieved for uranium within 5 min, even in the ultralow concentration range of 75−250 ppb, and the residual uranium was reduced to below 4.9 ppb. The MOF nanosheets also exhibited extremely high anti-interference ability, which could efficiently remove the low-level uranium (∼150 ppb) from various real samples. The characterizations and density functional theory calculations demonstrated that the synergistic effects of multiple interactions between the carboxylate groups and cage-like cavities with uranyl ions can be responsible for the efficient and selective uranium extraction.

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