Special Issue "Advanced Metal-Organic Frameworks"

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Inorganic Materials and Metal-Organic Frameworks".

Deadline for manuscript submissions: 31 December 2022 | Viewed by 2383

Special Issue Editor

Prof. Dr. Fei Wang
E-Mail Website
Guest Editor
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou 350002, Fujian, China
Interests: metal–organic frameworks (MOFs); metal–organic zeolites (MOZs); gas separation; chiral sensing and separation; photoelectrocatalysis; drug delivery

Special Issue Information

Dear Colleagues,

Metal–organic frameworks (MOFs) are a new type of crystalline porous material. After more than 20 years of development, tens of thousands of MOFs have been synthesized which exhibit wide potential applications in adsorption and separation, luminescence, catalysis, biomedicine, and other fields. Especially in the biomedical field, because of its controllable pore size, functional groups and good biocompatibility, the preparation of nano-scale metal–organic framework materials for slow drug release and metabolism in living cells, real-time monitoring of life activities, etc., has great biological significance for people to understand important life activities in living organisms (such as the function of protein and the interaction between protein), to regulate the activation mechanism of protein, and to regulate the protein pathway related to major diseases. Therefore, developing multifunctional MOFs and MOF-based composite materials and applying them to different fields will greatly promote the mutual development of disciplines.

This Special Issue of Nanomaterials will aim to cover the latest development of metal–organic framework nanostructures, not only involving material synthesis, characterization, and multilevel assembly structure, but also reporting on their functions in thin film preparation and processing devices, including but not limited to gas adsorption and separation, biomedicine and drug delivery, photoelectrocatalysis, gas sensing, pollutant degradation and capture, and so on.

Prof. Dr. Fei Wang
Guest Editor

Manuscript Submission Information

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Keywords

  • MOFs
  • Film
  • Gas separation
  • Gas sensing
  • Catalysis

Published Papers (3 papers)

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Research

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Article
A Facile and General Approach to Enhance Water Resistance of Metal-Organic Frameworks by the Post-Modification with Aminopropyltriethoxylsilane
Nanomaterials 2022, 12(7), 1134; https://doi.org/10.3390/nano12071134 - 29 Mar 2022
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Abstract
The water sensitivity of metal-organic frameworks (MOFs) as a common and crucial issue has greatly hindered their practical applications. Here, we present a facile and general approach to improve the water resistance of a typical MOF, i.e., CuBTC [Cu3(BTC)2(H [...] Read more.
The water sensitivity of metal-organic frameworks (MOFs) as a common and crucial issue has greatly hindered their practical applications. Here, we present a facile and general approach to improve the water resistance of a typical MOF, i.e., CuBTC [Cu3(BTC)2(H2O)3]n (BTC = benzene-1,3,5-tricarboxylate) using a post-modification reaction with aminopropyltriethoxylsilane (APTES) at room temperature. The afforded material is denoted as [email protected] Various spectroscopic methods reveal that the organosilicon linkers have been successfully grafted onto CuBTC by electrostatic attraction between acid and base groups and without affecting the original coordination mode and basic structure. Compared with CuBTC, the water stability of [email protected] was significantly improved. The pristine CuBTC almost lost all its crystallinity, morphology and pore structure after 3-day treatment in water, while [email protected] is able to retain its main crystal structure and basic porosity after the same treatment. This finding can be explained by the successful introduction of the organosilicon molecular overlayer on the periphery of CuBTC to slow down the destruction of weak metal coordination bonds by water molecules, thus improving the water stability of CuBTC. The solution of water sensitivity provides more opportunities for the practical applications of CuBTC, such as aqueous phase catalysis and gas separation in humid environments. This simple approach can certainly be expanded to improve the water resistance of other carboxylate-containing ligand-based MOFs. Full article
(This article belongs to the Special Issue Advanced Metal-Organic Frameworks)
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Article
Machine Learning-Assisted Computational Screening of Metal-Organic Frameworks for Atmospheric Water Harvesting
Nanomaterials 2022, 12(1), 159; https://doi.org/10.3390/nano12010159 - 03 Jan 2022
Cited by 2 | Viewed by 712
Abstract
Atmospheric water harvesting by strong adsorbents is a feasible method of solving the shortage of water resources, especially for arid regions. In this study, a machine learning (ML)-assisted high-throughput computational screening is employed to calculate the capture of H2O from N [...] Read more.
Atmospheric water harvesting by strong adsorbents is a feasible method of solving the shortage of water resources, especially for arid regions. In this study, a machine learning (ML)-assisted high-throughput computational screening is employed to calculate the capture of H2O from N2 and O2 for 6013 computation-ready, experimental metal-organic frameworks (CoRE-MOFs) and 137,953 hypothetical MOFs (hMOFs). Through the univariate analysis of MOF structure-performance relationships, Qst is shown to be a key descriptor. Moreover, three ML algorithms (random forest, gradient boosted regression trees, and neighbor component analysis (NCA)) are applied to hunt for the complicated interrelation between six descriptors and performance. After the optimizing strategy of grid search and five-fold cross-validation is performed, three ML can effectively build the predictive model for CoRE-MOFs, and the accuracy R2 of NCA can reach 0.97. In addition, based on the relative importance of the descriptors by ML, it can be quantitatively concluded that the Qst is dominant in governing the capture of H2O. Besides, the NCA model trained by 6013 CoRE-MOFs can predict the selectivity of hMOFs with a R2 of 0.86, which is more universal than other models. Finally, 10 CoRE-MOFs and 10 hMOFs with high performance are identified. The computational screening and prediction of ML could provide guidance and inspiration for the development of materials for water harvesting in the atmosphere. Full article
(This article belongs to the Special Issue Advanced Metal-Organic Frameworks)
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Review

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Review
The Synthesis and Properties of TIPA-Dominated Porous Metal-Organic Frameworks
Nanomaterials 2021, 11(11), 2791; https://doi.org/10.3390/nano11112791 - 21 Oct 2021
Cited by 1 | Viewed by 734
Abstract
Metal-Organic Frameworks (MOFs) as a class of crystalline materials are constructed using metal nodes and organic spacers. Polydentate N-donor ligands play a mainstay-type role in the construction of metal−organic frameworks, especially cationic MOFs. Highly stable cationic MOFs with high porosity and open channels [...] Read more.
Metal-Organic Frameworks (MOFs) as a class of crystalline materials are constructed using metal nodes and organic spacers. Polydentate N-donor ligands play a mainstay-type role in the construction of metal−organic frameworks, especially cationic MOFs. Highly stable cationic MOFs with high porosity and open channels exhibit distinct advantages, they can act as a powerful ion exchange platform for the capture of toxic heavy-metal oxoanions through a Single-Crystal to Single-Crystal (SC-SC) pattern. Porous luminescent MOFs can act as nano-sized containers to encapsulate guest emitters and construct multi-emitter materials for chemical sensing. This feature article reviews the synthesis and application of porous Metal-Organic Frameworks based on tridentate ligand tris (4-(1H-imidazol-1-yl) phenyl) amine (TIPA) and focuses on design strategies for the synthesis of TIPA-dominated Metal-Organic Frameworks with high porosity and stability. The design strategies are integrated into four types: small organic molecule as auxiliaries, inorganic oxyanion as auxiliaries, small organic molecule as secondary linkers, and metal clusters as nodes. The applications of ratiometric sensing, the adsorption of oxyanions contaminants from water, and small molecule gas storage are summarized. We hope to provide experience and inspiration in the design and construction of highly porous MOFs base on polydentate N-donor ligands. Full article
(This article belongs to the Special Issue Advanced Metal-Organic Frameworks)
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