Ultrastable Tb-Organic Framework as a Selective Sensor of Phenylglyoxylic Acid in Urine

2021 ◽  
Author(s):  
Peng Jia ◽  
Liang Gao ◽  
Yan Zheng ◽  
Xian Zheng ◽  
Chang Wang ◽  
...  
Keyword(s):  
Phenylglyoxylic Acid ◽  
Selective Sensor ◽  
Organic Framework

Series of highly stable Cd(II)-based MOFs as sensitive and selective sensor for detection of nitrofuran antibiotic

CrystEngComm ◽  
2021 ◽  
Author(s):  
Lu Lu ◽  
Shan-He Zhou ◽  
Dong Liu ◽  
Alireza Nezamzadeh-Ejhieh ◽  
Mohd. Muddassir ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Global Problems ◽  
Metal Organic ◽  
Selective Sensor ◽  
Organic Framework

The abuse of antibiotics has caused some global problems and critical environmental ecology impacts. Herein, four new metal-organic framework (MOFs), including {[Cd(HL)(bic)(H2O)]•2H2O}(1), {[Cd3(L)2(bbi)2(H2O)2]•2H2O}(2), [Cd3(L)2(bib)2(H2O)2] (3) and [Cd3(L)2(idy)2] (4) (H3L =...

AIE-active tetraphenylethene functionalized metal–organic framework for selective detection of nitroaromatic explosives and organic photocatalysis

2016 ◽  
Vol 52 (75) ◽  
pp. 11284-11287 ◽  
Author(s):  
Qiu-Yan Li ◽  
Zheng Ma ◽  
Wen-Qiang Zhang ◽  
Jia-Long Xu ◽  
Wei Wei ◽  
...  
Keyword(s):  
Visible Light ◽  
Metal Organic Framework ◽  
Selective Detection ◽  
Nitroaromatic Explosives ◽  
Metal Organic ◽  
Selective Sensor ◽  
Organic Framework

A luminescent MOF containing an AIE-active TPE moiety works as a selective sensor for detecting nitroaromatic explosives, as well as an efficient heterogeneous photocatalyst for CDC reactions mediated by visible light.

pH stable cationic luminescence Metal−Organic framework material with nitrate guests as high selective sensor for detecting 2, 4, 6-trinitrophenol

2020 ◽  
Vol 290 ◽  
pp. 121583
Author(s):  
Jia-Xin Li ◽  
Kojo Aboagye Nartey ◽  
Xiu-Jun Cao ◽  
Ming-Dao Zhang ◽  
Jin-Song Hu
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic ◽  
Selective Sensor ◽  
Organic Framework

A robust and luminescent covalent organic framework as a highly sensitive and selective sensor for the detection of Cu2+ions

2016 ◽  
Vol 52 (39) ◽  
pp. 6613-6616 ◽  
Author(s):  
Zhongping Li ◽  
Yuwei Zhang ◽  
Hong Xia ◽  
Ying Mu ◽  
Xiaoming Liu
Keyword(s):  
Quantum Yield ◽  
Copper Ions ◽  
Luminescent Probe ◽  
High Quantum Yield ◽  
Covalent Organic Framework ◽  
High Quantum ◽  
Highly Sensitive ◽  
Excellent Stability ◽  
Selective Sensor ◽  
Organic Framework

A highly crystalline and porous azine-linked covalent organic framework possesses excellent stability and luminescence properties with high quantum yield. It can serve as a promising luminescent probe for selectively sensing copper ions.

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.

Tuning the pore structures and photocatalytic properties of a 2D covalent organic framework with multi-branched photoactive moieties

Nanoscale ◽  
2020 ◽  
Vol 12 (30) ◽  
pp. 16136-16142
Author(s):  
Xuan Wang ◽  
Ming-Jie Dong ◽  
Chuan-De Wu
Keyword(s):  
Photocatalytic Properties ◽  
Effective Strategy ◽  
Covalent Organic Framework ◽  
Highly Efficient ◽  
Pore Structures ◽  
Local Connection ◽  
Organic Framework

An effective strategy to incorporate accessible metalloporphyrin photoactive sites into 2D COFs by establishing a 3D local connection for highly efficient photocatalysis was developed.

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>

A Three-Dimensional Tetraphenylethylene-Based Fluorescence Covalent Organic Framework for Molecular Recognition

2020 ◽  
Author(s):  
Junxia Ren ◽  
Yaozu Liu ◽  
Xin Zhu ◽  
Yangyang Pan ◽  
Yujie Wang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Fluorescence Probe ◽  
Three Dimensional ◽  
Hazardous Substances ◽  
Covalent Organic Framework ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Polycyclic Aromatic ◽  
Better Than ◽  
Organic Framework

<p><a></a><a></a><a></a><a></a><a></a><a></a><a></a><a>The development of highly-sensitive recognition of </a><a></a><a></a><a></a><a></a><a>hazardous </a>chemicals, such as volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs), is of significant importance because of their widespread social concerns related to environment and human health. Here, we report a three-dimensional (3D) covalent organic framework (COF, termed JUC-555) bearing tetraphenylethylene (TPE) side chains as an aggregation-induced emission (AIE) fluorescence probe for sensitive molecular recognition.<a></a><a> </a>Due to the rotational restriction of TPE rotors in highly interpenetrated framework after inclusion of dimethylformamide (DMF), JUC-555 shows impressive AIE-based strong fluorescence. Meanwhile, owing to the large pore size (11.4 Å) and suitable intermolecular distance of aligned TPE (7.2 Å) in JUC-555, the obtained material demonstrates an excellent performance in the molecular recognition of hazardous chemicals, e.g., nitroaromatic explosives, PAHs, and even thiophene compounds, via a fluorescent quenching mechanism. The quenching constant (<i>K</i><sub>SV</sub>) is two orders of magnitude better than those of other fluorescence-based porous materials reported to date. This research thus opens 3D functionalized COFs as a promising identification tool for environmentally hazardous substances.</p>

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