A superior luminescent metal-organic framework sensor for sensing trace Al3+ and picric acid via disparate charge transfer behaviors

Using the “crystal sponge” approach, weak organic electron donor molecules were impregnated and evenly distributed in a crystal of a metal–organic framework (MOF), with the self-assembly of the donor–acceptor pairs with electron acceptor ligands. The nanopores of the MOF confined them and induced a charge transfer phenomenon, which would not occur between donor and acceptor molecules in a bulk scale.

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Boosting photo-Fenton process enabled by ligand-to-cluster charge transfer excitations in iron-based metal organic framework

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2021.120882 ◽

2021 ◽

pp. 120882

Author(s):

Wen-Qiang Li ◽

Yi-Xuan Wang ◽

Jia-Qi Chen ◽

Nannan Hou ◽

Yuanming Li ◽

...

Keyword(s):

Charge Transfer ◽

Metal Organic Framework ◽

Fenton Process ◽

Metal Organic ◽

Iron Based ◽

Organic Framework

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Enhanced Water Stability and Photoresponsivity in Metal-Organic Framework (MOF): A Potential Tool to Combat Drug-resistant Bacteria

Scientific Reports ◽

10.1038/s41598-019-55542-8 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 7

Author(s):

Saleh A. Ahmed ◽

Damayanti Bagchi ◽

Hanadi A. Katouah ◽

Md. Nur Hasan ◽

Hatem M. Altass ◽

...

Keyword(s):

Electron Microscopy ◽

Charge Transfer ◽

Metal Organic Framework ◽

Resistant Bacteria ◽

Ros Generation ◽

Water Stability ◽

Equal Proportion ◽

Electronic Band ◽

Metal Organic ◽

Organic Framework

AbstractIn this work, we have successfully synthesized a bimetallic (Zinc and Cobalt) Zeolitic Imidazolate Framework (Zn50Co50-ZIF), a class in a wider microporous Metal-Organic Framework (MOF) family. The synthesized nanostructures maintain both water stability like ZIF-8 (solely Zn containing) and charge transfer electronic band in the visible optical spectrum as ZIF-67 (solely Co containing). Crystal structure from XRD, high resolution transmission electron microscopy (HRTEM) followed by elemental mapping (EDAX) confirm structural stability and omnipresence of the metal atoms (Zn and Co) across the nanomaterial with equal proportion. Existence of charge transfer state consistent with ZIF67 and intact ultrafast excited state dynamics of the imidazolate moiety in both ZIF-8 and ZIF-67, is evidenced from steady state and time resolved optical spectroscopy. The thermal and aqueous stabilities of Zn50Co50-ZIF are found to be better than ZIF-67 but comparable to ZIF-8 as evidenced by solubility, scanning electron microscopy (SEM) and XRD studies of the material in water. We have evaluated the photoinduced ROS generation by the mixed ZIF employing dichloro-dihydro-fluorescein diacetate (DCFH-DA) assay. We have also explored the potentiality of the synthesized material for the alternate remediation of methicillin resistant Staphylococcus aureus (MRSA) infection through the photoinduced reactive oxygen species (ROS) generation and methylene blue (MB) degradation kinetics.

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Multifunctional Zinc Metal–Organic Framework for Highly Selective Detection of Picric Acid and Inhibition of Laryngeal Cancer Cell Growth

Journal of Cluster Science ◽

10.1007/s10876-019-01657-x ◽

2019 ◽

Vol 31 (2) ◽

pp. 435-443

Author(s):

Wen-Kui Wu ◽

Jia-Liang Guo

Keyword(s):

Cell Growth ◽

Cancer Cell ◽

Laryngeal Cancer ◽

Picric Acid ◽

Metal Organic Framework ◽

Selective Detection ◽

Cancer Cell Growth ◽

Zinc Metal ◽

Metal Organic ◽

Organic Framework

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A new platform for development of photosystem I based thin films with superior photocurrent: TCNQ charge transfer salts derived from ZIF-8

Nanoscale Advances ◽

10.1039/d0na00220h ◽

2020 ◽

Vol 2 (11) ◽

pp. 5171-5180

Author(s):

Tyler H. Bennett ◽

Ravi Pamu ◽

Guang Yang ◽

Dibyendu Mukherjee ◽

Bamin Khomami

Keyword(s):

Thin Films ◽

Charge Transfer ◽

Photosystem I ◽

Protein Complex ◽

Metal Organic Framework ◽

Charge Transfer Salts ◽

Metal Organic ◽

Organic Framework

The photosynthetic protein complex Photosystem I has been incorporated into the metal organic framework ZIF-8 and then reacted with TCNQ to form a conductive charge transfer salt, generating significant photocurrent from a biohybrid photoactive film.

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Waste PET as a Reactant for Lanthanide MOF Synthesis and Application in Sensing of Picric Acid

Polymers ◽

10.3390/polym11122015 ◽

2019 ◽

Vol 11 (12) ◽

pp. 2015 ◽

Cited By ~ 1

Author(s):

Feng Zhang ◽

Shuyi Chen ◽

Shengqiang Nie ◽

Jun Luo ◽

Shaomin Lin ◽

...

Keyword(s):

Terephthalic Acid ◽

Limit Of Detection ◽

Picric Acid ◽

Metal Organic Framework ◽

Pet Bottles ◽

Metal Organic ◽

Lanthanide Metal ◽

Ft Ir ◽

First Time ◽

Organic Framework

In this study, a lanthanide metal organic framework based on the ligand of terephthalic acid derived from waste polyethylene terephthalate (PET) bottles was designed and synthesized. The structure and morphology of the Tb-BDC was investigated by X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The Tb-BDC displays a high selectivity and sensitivity towards picric acid (TNP). The luminescence intensities exhibit a linear relation, with a concentration of TNP over the range of 1 × 10−5–1 × 10−4 M, with a limit of detection of 1 × 10−5 M. The sensing mechanism is also discussed. This is the first time that waste PET materials have been used as the starting precursor of terephthalic acid (BDC) for the fabrication of lanthanide MOF (metal organic framework), which is applied in sensing TNP.

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