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Porous Organic Materials: Design and Applications: Volume II
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Porous Organic Materials: Design and Applications: Volume II

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 31 March 2025 | Viewed by 4133

Special Issue Editors

Prof. Dr. Yan’an Gao

E-Mail Website
Guest Editor
Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island, Resources, Hainan University, No 58, Renmin Avenue, Haikou 570228, China
Interests: porous organic materials (POMs); adsorption and separation; energy storage and conversion; photoelectrocatalysis; ionic liquids
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Qi Chen

E-Mail Website
Guest Editor
School of Marine Science and Engineering, Hainan University, Haikou 570228, China
Interests: porous materials; covalent organic frameworks; polymeric composites; interface fabrication; sustainable application; energy conversion; marine science and technology

Special Issue Information

Dear Colleagues,

Learning from nature to benefit humanity is the primary task of scientists. Porous structures are inherent to different-scale natural processes, from macroscopic honeycomb, which is the ”magnum opus” of honeybees, to nanopores which regulate ion/molecule transportation across the cell membrane. Inspired by fascinating molecular pores with unique biological functions in nature, artificial porous structures have attracted increasing research enthusiasm over the past several decades. The International Union of Pure and Applied Chemistry (IUPAC) defines a porous solid as “a solid with pores, i.e., cavities, channels, or interstices which are deeper than they are wide,” and states that these pores can be “open” or “closed”. By these definitions, porous organic materials including, but not limited to, hyper-cross-linked polymers (HCPs), polymers of intrinsic microporosity (PIMs), conjugated microporous polymers (CMPs), covalent organic frameworks (COFs), covalent triazine frameworks (CTFs), porous aromatic frameworks (PAFs), extrinsic porous molecules, and porous organic cages have been well developed. Benefiting from the diverse compositions and tunable pore topologies, porous organic materials have been considered as potentially superior candidates for a wide variety of applications, such as adsorption and separation, filtration, catalysis, energy storage and conversion, mass transportation, drug delivery, etc.

This Special Issue aims to gather scientific papers on significant breakthroughs in the field of porous organic materials. We welcome papers discussing design strategies with an emphasis on topology, deep insight into chemical synthesis, structure–function correlation, state-of-the-art applications, or any other relevant issues. We expect that these joint endeavors will provide insightful guidelines for the advancement of porous organic materials.

Prof. Dr. Yan’an Gao
Prof. Dr. Qi Chen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • topology design
  • synthesis
  • structure—function correlation
  • adsorption and separation
  • catalysis
  • energy storage and conversion
  • mass transportation
  • biological application

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Related Special Issue

Published Papers (5 papers)

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Research

14 pages, 1785 KiB  
Article
Synthesis and Advanced NMR Characterization of Ordered 3D Reticular Materials with PolySilicate Nodes and Hydrophobic OrganoSilicone Linkers
by Jelle Jamoul, Sambhu Radhakrishnan, Maarten Houlleberghs, C. Vinod Chandran, Aline Vits, Pasquinel Weckx, Sam Smet, Daniel Arenas Esteban, Sara Bals, Johan A. Martens and Eric Breynaert
Molecules 2025, 30(2), 228; https://doi.org/10.3390/molecules30020228 - 8 Jan 2025
Viewed by 671
Abstract
This work describes the synthesis of ordered 3D siloxane-silsesquioxane reticular materials with silicate D4R cubes (Si8O208−), harvested from a sacrificial tetrabutylammonium cyclosilicate hydrate (TBA-CySH) precursor, interlinked with octyl and dicyclopentyl (Cp2) hydrocarbon functionalities in a one-step [...] Read more.
This work describes the synthesis of ordered 3D siloxane-silsesquioxane reticular materials with silicate D4R cubes (Si8O208−), harvested from a sacrificial tetrabutylammonium cyclosilicate hydrate (TBA-CySH) precursor, interlinked with octyl and dicyclopentyl (Cp2) hydrocarbon functionalities in a one-step synthesis with organodichlorosilanes. Advanced solid-state NMR spectroscopy allowed us to unravel the molecular order of the nodes and their interconnection by the silicone linkers. In the case of octyl-methyl silicone linkers, changing the silane-to-silicate ratio in the synthesis allowed for tuning the length of the linker between the nodes. With dicyclopentyl linkers, the addition of dimethyldichlorosilane was essential to enable the formation of a reticular network. The resulting materials contained mixed, dimeric silicone linkers, i.e., Si8-O-Si(Me2)-O-Si(Cp2)-O-Si8. Full article
(This article belongs to the Special Issue Porous Organic Materials: Design and Applications: Volume II)
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14 pages, 1748 KiB  
Article
Harnessing Halogenated Zeolitic Imidazolate Frameworks for Alcohol Vapor Adsorption
by Kevin Dedecker, Martin Drobek and Anne Julbe
Molecules 2024, 29(24), 5825; https://doi.org/10.3390/molecules29245825 - 10 Dec 2024
Viewed by 556
Abstract
This study explores Zeolitic Imidazolate Frameworks (ZIFs) as promising materials for adsorbing alcohol vapors, one of the main contributors to air quality deterioration and adverse health effects. Indeed, this sub-class of Metal–Organic Frameworks (MOFs) offers a promising alternative to conventional adsorbents like zeolites [...] Read more.
This study explores Zeolitic Imidazolate Frameworks (ZIFs) as promising materials for adsorbing alcohol vapors, one of the main contributors to air quality deterioration and adverse health effects. Indeed, this sub-class of Metal–Organic Frameworks (MOFs) offers a promising alternative to conventional adsorbents like zeolites and activated carbons for air purification. Specifically, this investigation focuses on ZIF-8_Br, a brominated version of ZIF-8_CH3, to evaluate its ability to capture aliphatic alcohols at lower partial pressures. The adsorption properties have been investigated using both experimental and computational methods combining Density Functional Theory and Grand Canonical Monte Carlo simulations. The Ideal Adsorbed Solution Theory (IAST) has been used to assess the material selectivity in the presence of binary equimolar alcohol mixtures. Compared to ZIF-8_CH3, the brominated analog has been shown to feature a higher affinity for alcohols, a property that could be advantageously exploited in environmental remediation or in the development of membranes for alcohol vapor sensors. Full article
(This article belongs to the Special Issue Porous Organic Materials: Design and Applications: Volume II)
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11 pages, 2617 KiB  
Article
Adsorption and Removal of 2,4,6-Trinitrotoluene by a Glycoluril-Derived Molecular-Clip-Based Supramolecular Organic Framework
by Yuezhou Liu, Shu Zeng, Xiaokai He, Yang Wu, Yang Liu and Yinglei Wang
Molecules 2024, 29(24), 5822; https://doi.org/10.3390/molecules29245822 - 10 Dec 2024
Viewed by 514
Abstract
A glycoluril-derived molecular-clip-based supramolecular organic framework (clip-SOF) with intrinsic porosity was prepared. The clip-SOF was used for the adsorption and removal of 2,4,6-trinitrotoluene (TNT) driven by noncovalent interactions. The efficiency of TNT removal by clip-SOFs is up to 88.5% in adsorption equilibrium, and [...] Read more.
A glycoluril-derived molecular-clip-based supramolecular organic framework (clip-SOF) with intrinsic porosity was prepared. The clip-SOF was used for the adsorption and removal of 2,4,6-trinitrotoluene (TNT) driven by noncovalent interactions. The efficiency of TNT removal by clip-SOFs is up to 88.5% in adsorption equilibrium, and the TNT adsorption capacity of clip-SOFs is about 40.2 mg/g at 25.0 °C. Clip-SOFs have good reusability, exhibiting almost no loss in performance in ten consecutive recycling tests. This work not only provides a new method for adsorbing energetic materials, but also promotes the application of supramolecular hosts in crystal engineering. Full article
(This article belongs to the Special Issue Porous Organic Materials: Design and Applications: Volume II)
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11 pages, 4179 KiB  
Article
Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated Thermodesorption
by Waclaw Makowski, Patrycja Gryta, Gabriela Jajko-Liberka, Monika Cieślik-Górna and Aleksandra Korzeniowska
Molecules 2024, 29(23), 5625; https://doi.org/10.3390/molecules29235625 - 28 Nov 2024
Viewed by 521
Abstract
A novel experimental technique, quasi-equilibrated temperature-programmed desorption and adsorption (QE-TPDA), was used to study the water sorption properties and hydrothermal stability of aluminum trimesate MIL-96 and aluminum isophthalate CAU-10, which have been selected due to their remarkable sorption properties. The QE-TPDA profiles of [...] Read more.
A novel experimental technique, quasi-equilibrated temperature-programmed desorption and adsorption (QE-TPDA), was used to study the water sorption properties and hydrothermal stability of aluminum trimesate MIL-96 and aluminum isophthalate CAU-10, which have been selected due to their remarkable sorption properties. The QE-TPDA profiles of water observed for MIL-96 and CAU-10 confirmed the hydrophilic nature of these materials. Complex QE-TPDA profiles indicate that water sorption in MIL-96 follows a three-step pore filling mechanism. The shape of single desorption peaks in the QE-TPDA profiles for CAU-10 confirms that water sorption involves a reversible phase transition. Based on the QE-TPDA profiles, the water adsorption heat was determined: 45–46 kJ/mol for CAU-10 and 43–56 kJ/mol for MIL-96, in the latter case depending on the adsorption extent. Hydrothermal stability tests revealed that MIL-96 retained its stable porosity-related sorption capacity for water after hydrothermal treatment up to 290 °C. Gradual changes in the QE-TPDA profiles due to the hydrothermal treatment above 290 °C, with decreasing the high-temperature desorption peak and increasing the low-temperature one, indicate minor structural changes occurring in this material. Only after 410 °C treatment was fast degradation of MIL-96 observed. CAU-10 exhibited high and unchanged hydrothermal stability up to 400 °C. Full article
(This article belongs to the Special Issue Porous Organic Materials: Design and Applications: Volume II)
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11 pages, 1824 KiB  
Article
Metal Imidazole-Modified Covalent Organic Frameworks as Electrocatalysts for Alkaline Oxygen Evolution Reaction
by Meng Xia, Xinxin Yu, Zhuangzhuang Wu, Yuzhen Zhao, Lijuan Feng and Qi Chen
Molecules 2024, 29(21), 5076; https://doi.org/10.3390/molecules29215076 - 27 Oct 2024
Viewed by 1352
Abstract
Since the product contains no carbon-based substances and can be driven by non-carbon-based electricity, electrocatalytic water splitting is considered to be among the most effective strategies for alleviating the energy crisis and environmental pollution. This process helps lower greenhouse gas emissions while also [...] Read more.
Since the product contains no carbon-based substances and can be driven by non-carbon-based electricity, electrocatalytic water splitting is considered to be among the most effective strategies for alleviating the energy crisis and environmental pollution. This process helps lower greenhouse gas emissions while also supporting the shift toward renewable energy sources. The anodic oxygen evolution reaction (OER) involves a more complex multi-electron transfer process, which is the principal limiting factor in overall water splitting. Extensive research has demonstrated that the controlled design of effective electrocatalysts can address this limitation. In this study, a previously unreported covalent organic framework material (COF-IM) was synthesized via a post-synthetic modification strategy. Notably, COF-IM contains imidazole nitrogen metal active sites. Transition metal-coordinated COF-IM@Co can function as a highly effective electrocatalyst, exhibiting a lower overpotential (403.8 mV@10 mA cm−2) in alkaline electrolytes, thereby highlighting its potential for practical applications in energy conversion technologies. This study offers new perspectives on the design and synthesis of COFs, while also making substantial contributions to the advancement and application of OER electrocatalysts. Full article
(This article belongs to the Special Issue Porous Organic Materials: Design and Applications: Volume II)
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