Pillaring of CdCl2‐Like Layers in Lanthanide Metal–Organic Frameworks: Synthesis, Structure, and Photophysical Properties

2008 ◽  
Vol 14 (19) ◽  
pp. 5839-5850 ◽  
Author(s):  
Partha Mahata ◽  
K. V. Ramya ◽  
Srinivasan Natarajan
Keyword(s):  
Photophysical Properties ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Lanthanide Metal

scholarly journals Exciton Coupling and Conformational Changes Impacting the Excited State Properties of Metal Organic Frameworks

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4230
Author(s):  
Andreas Windischbacher ◽  
Luca Steiner ◽  
Ritesh Haldar ◽  
Christof Wöll ◽  
Egbert Zojer ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Photophysical Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Red Shift ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Exciton Coupling ◽  
Metal Organic ◽  
Crystalline Metal

In recent years, the photophysical properties of crystalline metal-organic frameworks (MOFs) have become increasingly relevant for their potential application in light-emitting devices, photovoltaics, nonlinear optics and sensing. The availability of high-quality experimental data for such systems makes them ideally suited for a validation of quantum mechanical simulations, aiming at an in-depth atomistic understanding of photophysical phenomena. Here we present a computational DFT study of the absorption and emission characteristics of a Zn-based surface-anchored metal-organic framework (Zn-SURMOF-2) containing anthracenedibenzoic acid (ADB) as linker. Combining band-structure and cluster-based simulations on ADB chromophores in various conformations and aggregation states, we are able to provide a detailed explanation of the experimentally observed photophysical properties of Zn-ADB SURMOF-2: The unexpected (weak) red-shift of the absorption maxima upon incorporating ADB chromophores into SURMOF-2 can be explained by a combination of excitonic coupling effects with conformational changes of the chromophores already in their ground state. As far as the unusually large red-shift of the emission of Zn-ADB SURMOF-2 is concerned, based on our simulations, we attribute it to a modification of the exciton coupling compared to conventional H-aggregates, which results from a relative slip of the centers of neighboring chromophores upon incorporation in Zn-ADB SURMOF-2.

Epoxy Functional Composites Based on Lanthanide Metal–Organic Frameworks for Luminescent Polymer Materials

2021 ◽  
Vol 13 (6) ◽  
pp. 7625-7634
Author(s):  
Mingyang Hu ◽  
Ying Shu ◽  
Alexander Kirillov ◽  
Weisheng Liu ◽  
Lizi Yang ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Polymer Materials ◽  
Functional Composites ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Luminescent Polymer

Syntheses of series of lanthanide metal−organic frameworks for efficient UV-light-driven dye degradation: experiment and simulation

CrystEngComm ◽  
2021 ◽  
Author(s):  
Fei Yuan ◽  
Haixia Ma ◽  
Chumei Yuan ◽  
Chun-Sheng Zhou ◽  
Huai-Ming Hu ◽  
...  
Keyword(s):  
General Formula ◽  
Dye Degradation ◽  
Uv Light ◽  
Metal Organic Frameworks ◽  
Benzenedicarboxylic Acid ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Experiment And Simulation

Three new Ln(III)-based metal-organic frameworks (MOFs), having general formula [Ln2(L)2(ox)(H2O)2]n (Ln = Nd (1), Sm (2) and Eu (3)) have been synthesized using multifunctional triazole-carboxylate linker 5-(1H-1,2,4-triazol-1-yl)-1,3-benzenedicarboxylic acid (H2L) and...

3D Ln-MOFs as multi-responsive luminescent probe for efficient sensing of Fe3+, Cr2O72‒, and antibiotics in aqueous solution

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yuanshan Xue ◽  
Ji Ding ◽  
Dan-Ling Sun ◽  
Weiwei Cheng ◽  
Xuanrong Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Organic Frameworks ◽  
Luminescent Probe ◽  
Metal Organic ◽  
Lanthanide Metal

Two families of lanthanide metal-organic frameworks (Ln-MOFs), namely {[Ln2L2(DMF)4]·xDMF·yH2O}n (Ln = Ce(1), Pr(2), Sm(3), Eu(4), Gd(5); x = 0,1; y = 0,1), and {[Ln2L2(H2O)2.5]}n (Ln = Dy(6), Ho(7)), have been...

Two dimethylphenyl imidazole dicarboxylate-based lanthanide metal–organic frameworks for luminescence sensing of benzaldehyde

2015 ◽  
Vol 44 (9) ◽  
pp. 4362-4369 ◽  
Author(s):  
Bingbing Shi ◽  
Yuanhao Zhong ◽  
Lili Guo ◽  
Gang Li
Keyword(s):  
Dicarboxylic Acid ◽  
Metal Organic Frameworks ◽  
Hydrothermal Conditions ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Imidazole Dicarboxylate

Two novel dimethylphenyl imidazole dicarboxylate-based lanthanide(iii)-organic frameworks, [Ln(H2DMPhIDC)3(H3DMPhIDC)]n (Ln = Eu (1), Tb (2); H3DMPhIDC = 2-(3,4-dimethylphenyl)-1H-imidazole-4,5-dicarboxylic acid) have been synthesized under hydrothermal conditions.

Synthesis and Characterization of Lanthanide Metal-Organic Frameworks with Perfluorinated Linkers

2016 ◽  
Vol 98 ◽  
pp. 70-74
Author(s):  
Andrius Laurikėnas ◽  
Jurgis Barkauskas ◽  
Aivaras Kareiva
Keyword(s):  
Metal Organic Frameworks ◽  
Aqueous Media ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Lanthanide Elements ◽  
Diffusion Controlled ◽  
Benzenedicarboxylic Acid ◽  
Metal Organic ◽  
Lanthanide Metal

In this study, lanthanide elements (Ln3+) and 2,3,5,6-tetrafluoro-1,4-benzenedicarboxylic acid (TFBDC) based metal-organic frameworks (MOFs) were synthesized by precipitation and diffusion-controlled precipitation methods. Powders insoluble in aqueous media and polar solvents were obtained. The microstructure and properties of Ln3+ MOFs were evaluated and discussed. X-ray diffraction (XRD) analysis, infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and fluorescence spectroscopy (FLS) were carried out to characterize Ln3+ MOF's crystallinity, the microstructure, chemical composition and optical properties.

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