Negative thermal quenching of photoluminescence in a copper–organic framework emitter

2020 ◽  
Vol 56 (80) ◽  
pp. 12057-12060
Author(s):  
Ting Wu ◽  
Shenlong Jiang ◽  
Pabitra Narayan Samanta ◽  
Yangbin Xie ◽  
Jipeng Li ◽  
...  
Keyword(s):  
Thermal Quenching ◽  
Localization Transition ◽  
Imidazole Ligand ◽  
Organic Framework

This work reports the observation of the NTQ effect in a copper–organic framework emitter through delocalization–localization transition of its imidazole ligand.

A three-dimensional porous metal–organic framework of unusual rob topology based on a novel fluorinated bis(imidazole) ligand

2011 ◽  
Vol 14 (11) ◽  
pp. 1819-1822 ◽  
Author(s):  
Zhi-Hui Zhang ◽  
Sheng-Chun Chen ◽  
Qun Chen ◽  
Ming-Yang He ◽  
Huan Xu
Keyword(s):  
Metal Organic Framework ◽  
Three Dimensional ◽  
Porous Metal ◽  
Imidazole Ligand ◽  
Metal Organic ◽  
Organic Framework

A 3D Luminescent Metal-organic Framework Constructed from Cu4I4Cubane Clusters and Triangular Imidazole Ligand

2014 ◽  
Vol 640 (10) ◽  
pp. 2030-2034 ◽  
Author(s):  
Shan-Shan Liu ◽  
Shuai Yuan ◽  
Tuo-Ping Hu ◽  
Di Sun
Keyword(s):  
Metal Organic Framework ◽  
Imidazole Ligand ◽  
Metal Organic ◽  
Organic Framework

Degradation of azo dyes under visible light with stable MOF based on tetrastyrene imidazole ligand

2020 ◽  
Vol 49 (14) ◽  
pp. 4352-4357 ◽  
Author(s):  
Xiao Zhang ◽  
Lu-Jie Wang ◽  
Zhen Han ◽  
Xing Meng ◽  
Hai-Ning Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Azo Dyes ◽  
Metal Organic Framework ◽  
Imidazole Ligand ◽  
Metal Organic ◽  
Organic Framework

In the present work, a new 3D metal–organic framework (MOF) has been synthesized and characterized.

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>

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