Metal–organic framework-based fluorescent sensing of tetracycline-type antibiotics applicable to environmental and food analysis

The Analyst ◽  
2019 ◽  
Vol 144 (6) ◽  
pp. 1916-1922 ◽  
Author(s):  
Qiao Liu ◽  
Di Ning ◽  
Wen-Juan Li ◽  
Xiao-Meng Du ◽  
Qian Wang ◽  
...  
Keyword(s):  
Food Analysis ◽  
Metal Organic Framework ◽  
Fluorescent Sensing ◽  
Metal Organic ◽  
Organic Framework

With the use of a masking agent, a luminescent MOF realized the selective fluorescent sensing of tetracyclines over many other kinds of antibiotics.

Immobilization of ssDNA on a metal–organic framework derived magnetic porous carbon (MPC) composite as a fluorescent sensing platform for the detection of arsenate ions

The Analyst ◽  
2019 ◽  
Vol 144 (9) ◽  
pp. 3111-3118 ◽  
Author(s):  
Marieeswaran Muppidathi ◽  
Panneerselvam Perumal ◽  
Ravikumar Ayyanu ◽  
Sivanesan Subramanian
Keyword(s):  
Detection Limit ◽  
Porous Carbon ◽  
Metal Organic Framework ◽  
Fluorescent Sensing ◽  
Sensing Platform ◽  
Metal Organic ◽  
Efficient Recognition ◽  
Organic Framework

In this work, we fabricated a metal–organic framework derived magnetic porous carbon (MPC) and with ssDNA achieved specific and efficient recognition of harmful arsenate ions. The detection limit was achieved at 630 pM.

A water-stable metal–organic framework of a zwitterionic carboxylate with dysprosium: a sensing platform for Ebolavirus RNA sequences

2016 ◽  
Vol 52 (1) ◽  
pp. 132-135 ◽  
Author(s):  
Liang Qin ◽  
Li-Xian Lin ◽  
Zhi-Ping Fang ◽  
Shui-Ping Yang ◽  
Gui-Hua Qiu ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Rna Sequences ◽  
Fluorescent Sensing ◽  
Sensing Platform ◽  
Metal Organic ◽  
Organic Framework

A 3D Dy-based metal–organic framework (MOF) 1 was synthesized. Compound 1 can interact with the probe DNA to form a P-DNA@1 system. This system can be used as an effective fluorescent sensing platform for the detection of Ebolavirus RNA.

Pyrophosphate ion-triggered competitive displacement of ssDNA from a metal–organic framework and its application in fluorescent sensing of alkaline phosphatase

2018 ◽  
Vol 6 (46) ◽  
pp. 7614-7620 ◽  
Author(s):  
Caihong Wang ◽  
Gonge Tang ◽  
Hongliang Tan
Keyword(s):  
Alkaline Phosphatase ◽  
Metal Organic Framework ◽  
Competitive Displacement ◽  
Fluorescent Sensing ◽  
Competitive Coordination ◽  
Metal Organic ◽  
Organic Framework

The competitive coordination of PPi with a MVCM leads to the release of F-DNA and fluorescent sensing of ALP.

A Water-Stable Metal–Organic Framework with a Double-Helical Structure for Fluorescent Sensing

2016 ◽  
Vol 55 (15) ◽  
pp. 7326-7328 ◽  
Author(s):  
Xiao-Jing Liu ◽  
Ying-Hui Zhang ◽  
Ze Chang ◽  
Ai-Lin Li ◽  
Dan Tian ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Helical Structure ◽  
Fluorescent Sensing ◽  
Double Helical Structure ◽  
Metal Organic ◽  
Organic Framework

A multi-responsive luminescent sensor based on a super-stable sandwich-type terbium(iii)–organic framework

2016 ◽  
Vol 45 (39) ◽  
pp. 15492-15499 ◽  
Author(s):  
Guo-Xuan Wen ◽  
Min-Le Han ◽  
Xue-Qian Wu ◽  
Ya-Pan Wu ◽  
Wen-Wen Dong ◽  
...  
Keyword(s):  
Molecular Level ◽  
Metal Organic Framework ◽  
Fluorescent Sensing ◽  
Luminescent Sensor ◽  
Sandwich Type ◽  
Metal Organic ◽  
Organic Framework

Multi-responsive fluorescent sensing for the recognition of different analytes at the molecular level is achieved using a Tb(iii)-based metal–organic framework (Tb-MOF).

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.

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