Induced Absolute Configuration of Achiral Tetradentate Ligands in Metal–Organic Frameworks for Circularly Polarized Luminescence

Chinese Journal of Chemistry, Journal Year: 2024, Volume and Issue: 42(11), P. 1260 - 1266

Published: Feb. 9, 2024

Comprehensive Summary The crystallization of chiral molecules is great significance to understand the origin and evolution hierarchical chirality reveal relationships between structural circularly polarized luminescence (CPL) activity. Here, we report two pairs metal–organic frameworks (MOFs) (DCF‐17/LCF‐17, DCF‐18/LCF‐18) by utilizing tetradentate ligands tetra(3‐imidazoylphenyl)ethylene (TIPE) 4,4'‐[4',5'‐bis[4‐(4‐pyridinyl)phenyl][1,1':2',1”‐terphenyl]‐4,4”‐diyl]bis[pyridine] (TPPP) as linkers. It can be observed that spontaneous resolution achiral converted into induced resolution, form absolute configuration using enantiopure camphoric acid (cam) reagent (CIR). As a result, racemate MOFs driven generate homochiral crystallization. Another [Cd(D‐cam)(TPPP) 0.5 ] (AF‐1, AF = framework) [Cd(L‐cam)(TPPP) (AF‐2) were prepared. position disorder D / L ‐cam skeleton causes generation nonchiralization, further leading disappearance symmetry breaking TPPP. For perspective structure, this first which reveals transfer nonchiralization agents ligands. Besides, DCF‐17 LCF‐17 show CPL with dissymmetry factor ( g lum ) –1.0 × 10 ‐2 +9.2 –3 , respectively. This work provides useful evidences construction CPL‐active crystalline materials.

Language: Английский

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Cd-MOF and Its Ln³⁺-Post Modification Products: Regulation of Luminescence Properties and Improved Detection of Uric Acid, Quinine, and Quinidine

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(4), P. 1962 - 1973

Published: Jan. 18, 2024

One 3D Cd-MOF, namely, {[(HDMA)2][Cd3(L)2]·5H2O·2DMF}n (LCU-124, LCU indicates Liaocheng University), was synthesized from an ether-containing ligand 1,3-bis(3,5-dicarboxylphenoxy)benzene (H4L). Its Ln3+-postmodified samples, Eu3+@LCU-124 and Tb3+@LCU-124, were obtained through cation exchange of dimethylamine (HDMA) with Eu3+ Tb3+. The successful entry rare earth into LCU-124 by modification verified IR, XRD, XPS, EDS mapping, luminescence spectra. proportion Eu3+/Tb3+ adjusted during the process, leading to fluorescent materials different emissions. Luminescence measurements indicated that these complexes exhibited interesting multiresponsive sensing activities toward biomarkers urine acid (UA), quinine (QN), quinidine (QND). First, has a pronounced quenching effect UA detection limit 31.01 μM. After modification, visualization improved significantly reduced 0.868 Second, when QN QND present in suspensions strong blue light emission peaks occurred, while characteristic decreased, forming ratiometric sensors range 0.199–9.49 probes have high selectivity, excellent sensitivity recycling, fast response time (less than 1 min). Besides, simple logic gate circuit luminescent mixed matrix membranes designed provide above biomarkers. Our work could improve ability significantly.

Language: Английский

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Beyond conventional: Role of chiral metal–organic frameworks in asymmetric scenarios

Nano Today, Journal Year: 2024, Volume and Issue: 56, P. 102227 - 102227

Published: March 18, 2024

Language: Английский

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Chiral metal-organic frameworks and their composites as stationary phases for liquid chromatography chiral separation: A minireview

Journal of Chromatography A, Journal Year: 2023, Volume and Issue: 1700, P. 464032 - 464032

Published: April 28, 2023

Language: Английский

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Chiral metal-organic frameworks-based materials for chromatographic enantioseparation

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: 35(12), P. 109787 - 109787

Published: March 22, 2024

Language: Английский

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

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(7), P. 2559 - 2568

Published: May 24, 2024

Chirality inversion modulation is of great importance in the preparation chiroptical materials. The rational use stoichiometry mixed ligands chiral metal–organic frameworks (MOFs) to induce enantiomeric space groups a crucial topic structural chemistry. However, no remarkable results have been reported yet. In this work, we synthesized MOFs through assembly camphoric acid (d/l-cam) and achiral tetradentate ligands. Interestingly, visible single-crystal structures confirmed that chirality can be achieved via stoichiometric Significantly, switches circularly polarized luminescence (CPL) along with observed clearly. Moreover, encapsulated guest emitters exhibit inverted CPL, revealing helical-channel-dependent transfer. obtained constitute milestone field crystal engineering MOFs.

Language: Английский

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Circularly polarized luminescence and coordination geometries in mononuclear lanthanide(III) complexes

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 505, P. 215675 - 215675

Published: Feb. 9, 2024

Language: Английский

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A Comprehensive Review on the Enantiomeric Separation of Chiral Drugs Using Metal-Organic Frameworks

Chemosphere, Journal Year: 2024, Volume and Issue: 364, P. 143083 - 143083

Published: Aug. 16, 2024

Language: Английский

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Post-synthetic modifications of MOFs by different bolt ligands for controllable release of cargoes

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: 35(10), P. 109581 - 109581

Published: Feb. 1, 2024

Language: Английский

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Chiral carbonized polymer dots:A comprehensive review

Sustainable materials and technologies, Journal Year: 2025, Volume and Issue: 43, P. e01271 - e01271

Published: Jan. 31, 2025

Language: Английский

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