A dual model logic gate for mercury and iodide ions sensing based on metal–organic framework MIL-101

RSC Advances ◽  
2014 ◽  
Vol 4 (70) ◽  
pp. 37349-37352 ◽  
Author(s):  
Jing Mei Fang ◽  
Peng Fei Gao ◽  
Xiao Li Hu ◽  
Yuan Fang Li
Keyword(s):  
Fluorescence Anisotropy ◽  
Output Signal ◽  
Metal Organic Framework ◽  
Logic Gate ◽  
Dual Model ◽  
Low Background ◽  
Iodide Ions ◽  
Metal Organic ◽  
Organic Framework

In this work, by the introduction of metal–organic framework MIL-101 as the fluorescence anisotropy (FA) amplification and the low background platform, we firstly employed FA as the output signal of a logic gate, and constructed a dual model INHIBIT logic gate for Hg2+ and I− detection.

Metal–organic framework MIL-101 enhanced fluorescence anisotropy for sensitive detection of DNA

RSC Advances ◽  
2014 ◽  
Vol 4 (18) ◽  
pp. 9379-9382 ◽  
Author(s):  
Jing Fang Guo ◽  
Chun Mei Li ◽  
Xiao Li Hu ◽  
Cheng Zhi Huang ◽  
Yuan Fang Li
Keyword(s):  
Fluorescence Anisotropy ◽  
Metal Organic Framework ◽  
Sensitive Detection ◽  
Enhanced Fluorescence ◽  
Highly Sensitive ◽  
Metal Organic ◽  
Highly Sensitive Detection ◽  
Organic Framework

MIL-101 was first utilized as a fluorescence anisotropy (FA) amplifier for highly sensitive detection of DNA.

Metal–organic framework MIL-101 as a low background signal platform for label-free DNA detection

The Analyst ◽  
2014 ◽  
Vol 139 (4) ◽  
pp. 801-806 ◽  
Author(s):  
Jing Mei Fang ◽  
Fei Leng ◽  
Xi Juan Zhao ◽  
Xiao Li Hu ◽  
Yuan Fang Li
Keyword(s):  
Dna Detection ◽  
Metal Organic Framework ◽  
Label Free ◽  
Background Signal ◽  
Low Background ◽  
Free Dna ◽  
Metal Organic ◽  
Organic Framework

A turn-on luminescent probe for Fe3+ and ascorbic acid with logic gate operation based on a zinc(ii)-based metal–organic framework

2020 ◽  
Vol 44 (21) ◽  
pp. 8728-8735 ◽  
Author(s):  
Jing Tang ◽  
Doudou Feng ◽  
Jie Yang ◽  
Xuehui Ma ◽  
Xiao-Qing Wang
Keyword(s):  
Metal Organic Framework ◽  
Logic Gate ◽  
High Sensitivity ◽  
Luminescent Probe ◽  
Gate Operation ◽  
Turn On ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Fluorescence Turn On ◽  
Organic Framework

A zinc(ii)-based metal–organic framework exhibits fluorescence turn-on behaviour for Fe3+ and AA with high sensitivity and selectivity.

Multifunctional metal–organic framework heterostructures for enhanced cancer therapy

2021 ◽  
Author(s):  
Jintong Liu ◽  
Jing Huang ◽  
Lei Zhang ◽  
Jianping Lei
Keyword(s):  
Cancer Therapy ◽  
General Principle ◽  
Biomedical Applications ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Functional Modulation ◽  
Organic Framework

We review the general principle of the design and functional modulation of nanoscaled MOF heterostructures, and biomedical applications in enhanced therapy.

Magnetic Ordering via Itinerant Ferromagnetism in a Metal-Organic Framework

2020 ◽  
Author(s):  
Jesse Park ◽  
Brianna Collins ◽  
Lucy Darago ◽  
Tomce Runcevski ◽  
Michael Aubrey ◽  
...  
Keyword(s):  
Charge Transport ◽  
Magnetic Order ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Magnetic Ordering ◽  
Double Exchange ◽  
Itinerant Ferromagnetism ◽  
Organic Solids ◽  
Metal Organic ◽  
Organic Framework

<b>Materials that combine magnetic order with other desirable physical attributes offer to revolutionize our energy landscape. Indeed, such materials could find transformative applications in spintronics, quantum sensing, low-density magnets, and gas separations. As a result, efforts to design multifunctional magnetic materials have recently moved beyond traditional solid-state materials to metal–organic solids. Among these, metal–organic frameworks in particular bear structures that offer intrinsic porosity, vast chemical and structural programmability, and tunability of electronic properties. Nevertheless, magnetic order within metal–organic frameworks has generally been limited to low temperatures, owing largely to challenges in creating strong magnetic exchange in extended metal–organic solids. Here, we employ the phenomenon of itinerant ferromagnetism to realize magnetic ordering at <i>T</i><sub>C</sub> = 225 K in a mixed-valence chromium(II/III) triazolate compound, representing the highest ferromagnetic ordering temperature yet observed in a metal–organic framework. The itinerant ferromagnetism is shown to proceed via a double-exchange mechanism, the first such observation in any metal–organic material. Critically, this mechanism results in variable-temperature conductivity with barrierless charge transport below <i>T</i><sub>C</sub> and a large negative magnetoresistance of 23% at 5 K. These observations suggest applications for double-exchange-based coordination solids in the emergent fields of magnetoelectrics and spintronics. Taken together, the insights gleaned from these results are expected to provide a blueprint for the design and synthesis of porous materials with synergistic high-temperature magnetic and charge transport properties. </b>

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Mesoporous Metal-Organic Framework MAF-6

2019 ◽  
Author(s):  
Timothée Stassin ◽  
Ivo Stassen ◽  
Joao Marreiros ◽  
Alexander John Cruz ◽  
Rhea Verbeke ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Metal Organic Framework ◽  
Chemical Vapor ◽  
Uptake Capacity ◽  
Powder Synthesis ◽  
Crystalline Films ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
First Time ◽  
Organic Framework

A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited for the first time entirely from the vapor phase. A combination of PALS and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diam. ~2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by XRD, TGA, SEM, FTIR, PDF and EXAFS. The exceptional uptake capacity of the mesoporous MAF-6 in comparison to the microporous ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows.

An Overview of Metal-organic Frameworks-based Acid/Base Catalysts for Biofuel Synthesis

2020 ◽  
Vol 24 (16) ◽  
pp. 1876-1891
Author(s):  
Qiuyun Zhang ◽  
Yutao Zhang ◽  
Jingsong Cheng ◽  
Hu Li ◽  
Peihua Ma
Keyword(s):  
Alternative Fuels ◽  
Heterogeneous Catalysts ◽  
Supported Catalysts ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Flexible Structures ◽  
Biodiesel Production ◽  
Biodiesel Synthesis ◽  
Metal Organic ◽  
Organic Framework

Biofuel synthesis is of great significance for producing alternative fuels. Among the developed catalytic materials, the metal-organic framework-based hybrids used as acidic, basic, or supported catalysts play major roles in the biodiesel production. This paper presents a timely and comprehensive review of recent developments on the design and preparation of metal-organic frameworks-based catalysts used for biodiesel synthesis from various oil feedstocks, including MILs-based catalysts, ZIFs-based catalysts, UiO-based catalysts, Cu-BTC-based catalysts, and MOFs-derived porous catalysts. Due to their unique and flexible structures, excellent thermal and hydrothermal stability, and tunable host-guest interactions, as compared with other heterogeneous catalysts, metal-organic framework-based catalysts have good opportunities for application in the production of biodiesel at industrial scale.

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