scholarly journals Towards multifunctional lanthanide-based metal–organic frameworks

2015 ◽  
Vol 51 (68) ◽  
pp. 13313-13316 ◽  
Author(s):  
Gerard Tobin ◽  
Steve Comby ◽  
Nianyong Zhu ◽  
Rodolphe Clérac ◽  
Thorfinnur Gunnlaugsson ◽  
...  
Keyword(s):  
Visible Light ◽  
Near Infrared ◽  
Photophysical Properties ◽  
Metal Organic Frameworks ◽  
Structure Type ◽  
Lanthanide Ions ◽  
Light Emitters ◽  
Metal Organic

The structure-type of a Ho(iii)-based MOF can be varied using a range of different lanthanide ions to tune the photophysical properties and produce ligand-sensitised near-infrared and visible light emitters.

Lanthanide-based near-infrared emitting metal–organic frameworks with tunable excitation wavelengths and high quantum yields

2018 ◽  
Vol 54 (50) ◽  
pp. 6816-6819 ◽  
Author(s):  
Tu N. Nguyen ◽  
Gloria Capano ◽  
Andrzej Gładysiak ◽  
Fatmah Mish Ebrahim ◽  
Svetlana V. Eliseeva ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Near Infrared ◽  
Metal Organic Frameworks ◽  
Quantum Yields ◽  
Visible Light Absorption ◽  
High Quantum ◽  
Nir Light ◽  
Metal Organic

The introduction of –NH2 group in SION-100 allows the visible light absorption, and both SION-100 and SION-100-NH2 luminesce NIR light with long lifetimes and high quantum yields.

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.

Fluorinated Solvent-Assisted Photocatalytic Aerobic Oxidative Amidation of Alcohols via Visible-Light-Mediated ‎ HKUST-1/Cs-POMoW Catalysis.

2021 ◽  
Author(s):  
Meghdad Karimi ◽  
Samira Sadeghi ◽  
Haleh Mohebali ◽  
Zahra Azarkhosh ◽  
Vahid Safarifard ◽  
...  
Keyword(s):  
Visible Light ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Oxidative Amidation

Considering the irreplaceable importance of photocatalytic functionalization reactions and the widespread attention paid to the use of metal-organic frameworks, especially their modified variants for this purpose in recent years, different...

Lanthanide metal–organic frameworks based on the 4,4′-oxybisbenzoic acid ligand: synthesis, structures and physical properties

2015 ◽  
Vol 39 (12) ◽  
pp. 9872-9878 ◽  
Author(s):  
Yun Li ◽  
Ning Wang ◽  
Yan-Ju Xiong ◽  
Qian Cheng ◽  
Jie-Fang Fang ◽  
...  
Keyword(s):  
Physical Properties ◽  
Solvothermal Synthesis ◽  
Metal Organic Frameworks ◽  
Lanthanide Ions ◽  
Acid Ligand ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Ligand Synthesis

Using solvothermal synthesis, eight new 3D microporous lanthanide-ions-based MOFs constructed from 4,4′-oxybisbenzoic acid were obtained and displayed two types of architecture.

scholarly journals The nanoscaled metal-organic framework ICR-2 as a carrier of porphyrins for photodynamic therapy

2018 ◽  
Vol 9 ◽  
pp. 2960-2967 ◽  
Author(s):  
Jan Hynek ◽  
Sebastian Jurík ◽  
Martina Koncošová ◽  
Jaroslav Zelenka ◽  
Ivana Křížová ◽  
...  
Keyword(s):  
Inorganic Chemistry ◽  
Photodynamic Therapy ◽  
Photophysical Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Biological Applications ◽  
Nanoparticle Surface ◽  
Metal Organic ◽  
Unsaturated Metal Sites ◽  
First Time

Nanosized porphyrin-containing metal-organic frameworks (MOFs) attract considerable attention as solid-state photosensitizers for biological applications. In this study, we have for the first time synthesised and characterised phosphinate-based MOF nanoparticles, nanoICR-2 (Inorganic Chemistry Rez). We demonstrate that nanoICR-2 can be decorated with anionic 5,10,15,20-tetrakis(4-R-phosphinatophenyl)porphyrins (R = methyl, isopropyl, phenyl) by utilizing unsaturated metal sites on the nanoparticle surface. The use of these porphyrins allows for superior loading of the nanoparticles when compared with commonly used 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin. The nanoICR-2/porphyrin composites retain part of the free porphyrins photophysical properties, while the photodynamic efficacy is strongly affected by the R substituent at the porphyrin phosphinate groups. Thus, phosphinatophenylporphyrin with phenyl substituents has the strongest photodynamic efficacy due to the most efficient cellular uptake.

Novel bimetallic lanthanide metal–organic frameworks (Ln-MOFs) for colour-tuning through energy-transfer between visible and near-infrared emitting Ln3+ ions

2019 ◽  
Vol 7 (9) ◽  
pp. 2751-2757 ◽  
Author(s):  
Min Zeng ◽  
Chuanlang Zhan ◽  
Jiannian Yao
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Metal Organic Frameworks ◽  
Color Tuning ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Colour Tuning

Controllable color-tuning has been achieved in a bimetallic Ln-MOF through energy transfer from visible-emitting to near-infrared-emitting Ln ions.

Fast photocatalytic inactivation of Microcystis aeruginosa by metal-organic frameworks under visible light

Chemosphere ◽  
2020 ◽  
Vol 239 ◽  
pp. 124721 ◽  
Author(s):  
Gongduan Fan ◽  
Jinjin Zhou ◽  
Xiaomei Zheng ◽  
Jing Luo ◽  
Liang Hong ◽  
...  
Keyword(s):  
Visible Light ◽  
Microcystis Aeruginosa ◽  
Metal Organic Frameworks ◽  
Photocatalytic Inactivation ◽  
Metal Organic

Modifying Ag3VO4 with metal-organic frameworks for enhanced photocatalytic activity under visible light

2020 ◽  
Vol 239 ◽  
pp. 122078 ◽  
Author(s):  
BoYin Zhai ◽  
Ying Chen ◽  
YuNing Liang ◽  
YanHua Gao ◽  
JianLing Shi ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Metal Organic Frameworks ◽  
Metal Organic
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