Application of Metal-Organic Frameworks Based on Polymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1465

Special Issue Editor


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Guest Editor
College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
Interests: MOFs; biosensors; polymer dots for food safety; biomedical applications; nanomaterials
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Special Issue Information

Dear Colleagues,

Metal-Organic Frameworks (MOFs) and Metal-Organic Coordination Polymers (MOCPs) are interested by many researchers. MOFs and MOCPs, assembled by metal ions/clusters and organic ligands, are a class of crystalline mesoporous materials. Compared with traditional porous materials, MOFs have a high surface area, uniform pore size and structural and functional tunability.

This Special Issue is motived by the observed growing interests on the design, fabrication and applications of Metal-Organic Frameworks and Metal-Organic Coordination Polymers in many fields such as biosensing, bioimaging, drug delivery, nanozymes, food safety, food preservation, catalyst, among others. 

The most recent advancements about all kinds of applications by MOFs and MOCPs are welcome in this special issue.

Dr. Zhaoyang Ding
Guest Editor

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Keywords

  • metal-organic frameworks coordination polymer
  • biosensor
  • food safety
  • bioimaging
  • nanozyme
  • catalyst

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Published Papers (1 paper)

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18 pages, 9168 KiB  
Article
Dual-Mode Ce-MOF Nanozymes for Rapid and Selective Detection of Hydrogen Sulfide in Aquatic Products
by Qi Cheng, Xiaoyu Du, Zuyao Fu, Zhaoyang Ding and Jing Xie
Polymers 2024, 16(12), 1747; https://doi.org/10.3390/polym16121747 - 20 Jun 2024
Viewed by 1095
Abstract
Increasing concern over the safety of consumable products, particularly aquatic products, due to freshness issues, has become a pressing issue. Therefore, ensuring the quality and safety of aquatic products is paramount. To address this, a dual-mode colorimetric–fluorescence sensor utilizing Ce-MOF as a mimic [...] Read more.
Increasing concern over the safety of consumable products, particularly aquatic products, due to freshness issues, has become a pressing issue. Therefore, ensuring the quality and safety of aquatic products is paramount. To address this, a dual-mode colorimetric–fluorescence sensor utilizing Ce-MOF as a mimic peroxidase to detect H2S was developed. Ce-MOF was prepared by a conventional solvothermal synthesis method. Ce-MOF catalyzed the oxidation of 3,3’,5,5’-tetramethylbenzidine (TMB) by hydrogen peroxide (H2O2) to produce blue oxidized TMB (oxTMB). When dissolved, hydrogen sulfide (H2S) was present in the solution, and it inhibited the catalytic effect of Ce-MOF and caused the color of the solution to fade from blue to colorless. This change provided an intuitive indication for the detection of H2S. Through steady-state dynamic analysis, the working mechanism of this sensor was elucidated. The sensor exhibited pronounced color changes from blue to colorless, accompanied by a shift in fluorescence from none to light blue. Additionally, UV–vis absorption demonstrated a linear correlation with the H2S concentration, ranging from 200 to 2300 µM, with high sensitivity (limit of detection, LOD = 0.262 μM). Fluorescence intensity also showed a linear correlation, ranging from 16 to 320 µM, with high selectivity and sensitivity (LOD = 0.156 μM). These results underscore the sensor’s effectiveness in detecting H2S. Furthermore, the sensor enhanced the accuracy of H2S detection and fulfilled the requirements for assessing food freshness and safety. Full article
(This article belongs to the Special Issue Application of Metal-Organic Frameworks Based on Polymers)
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