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Polymers
Special Issues
Synthesis and Properties of Polymeric Frameworks
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Synthesis and Properties of Polymeric Frameworks

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

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 13528

Special Issue Editors

Dr. Shunqi Xu

E-Mail Website1 Website2
Guest Editor
Supramolecular Science and Engineering Institute, University of Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
Interests: two-dimensional (2D) materials; covalent organic frameworks (COFs); supramolecular organic frameworks (SOFs); energy storage and conversion; organic electronics
Dr. Shuai Bi

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
Interests: covalent organic frameworks; 2D conjugated polymers; polymeric semiconductors; crystal engineering; heterogeneous catalysis; photocatalysis
Dr. Rongran Liang

E-Mail Website
Guest Editor
Department of Chemistry, Texas A&M University, College Station, TX, USA
Interests: two-dimensional (2D) porous materials; covalent organic frameworks (COFs); hydrogen-bonded organic frameworks (HOFs); carbon dioxide capture
Dr. Dominik L. Pastoetter

E-Mail Website
Co-Guest Editor
Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
Interests: 2D covalent organic frameworks; 2D conjugated polymers; optoelectronic properties; ultralong room temperature phosphorescence; bio-based polymers

Special Issue Information

Dear Colleagues,

The emergence of synthetic polymers has driven the development of human society forward in all dimensions. The chemistry of polymers is perhaps the most diverse and inclusive among the chemical sciences. By tuning either their molecular or geometric structures, the properties of polymers can be finely altered, and this can be used to achieve desirable properties at the mesoscale. One example is the polymeric framework—a class of materials that have ordered polymer chains which are well-aligned in 3D space, forming open voids within the matrix. Over the past several decades, great strides have been made in the synthesis and application of polymeric frameworks, including metal−organic and covalent organic frameworks, conjugated microporous polymers, etc., which have been considered potentially superior candidates for various applications including gas adsorption and separation, catalysis, energy storage and conversion, optoelectronics, mass transport, sensing, etc.

This Special Issue of Polymers invites contributions on all aspects of polymeric frameworks, such as the design and synthesis of novel polymeric frameworks, the fundamental investigation of their properties, and high-performance applications. We welcome the submission of high-quality original experimental or theoretical works or review articles on the development of polymeric frameworks. We hope that this collection will include some fantastic examples related to the synthesis and properties of polymeric frameworks, which may provide comprehensive yet clear guidance for researchers on functional exploration.

Dr. Shunqi Xu
Dr. Shuai Bi
Dr. Rongran Liang
Dr. Dominik L. Pastoetter
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. Polymers 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

  • polymeric frameworks
  • porous organic polymers
  • metal–organic frameworks (MOFs)
  • covalent organic frameworks (COFs)
  • conjugated microporous polymers (CMPs)
  • hyper-cross-linked polymers
  • supramolecular organic frameworks (SOFs)
  • hydrogen-bonded organic frameworks (HOFs)
  • halogen-bonded organic frameworks (XOFs)

Published Papers (4 papers)

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Research

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13 pages, 4355 KiB  
Article
Polymer Membranes of Zeolitic Imidazole Framework-8 with Sodium Alginate Synthesized from ZIF-8 and Their Application in Light Gas Separation
by Aftab Aslam Parwaz Khan, Mallikarjunagouda B. Patil, Laxmibai P. Rathod, Shivalila G. Vader, Pankaj Raizada, Pardeep Singh, Maha M. Alotaibi, Mohammad Omaish Ansari, Anish Khan, Naved Azum, Malik Abdul Rub, Muhammad Nadeem Arshad and Abdullah M. Asiri
Polymers 2023, 15(4), 1011; https://doi.org/10.3390/polym15041011 - 17 Feb 2023
Cited by 2 | Viewed by 1642
Abstract
The potential of nanocomposite membranes (NCMs) prepared by the sodium alginate polymer and embedded with synthesized zeolitic imidazole framework-8 (ZIF-8) as fillers having microporous structure in the application of separation of gaseous mixture generated by the process of methane reforming was assessed. ZIF-8 [...] Read more.
The potential of nanocomposite membranes (NCMs) prepared by the sodium alginate polymer and embedded with synthesized zeolitic imidazole framework-8 (ZIF-8) as fillers having microporous structure in the application of separation of gaseous mixture generated by the process of methane reforming was assessed. ZIF-8 crystals were created through hydrothermal synthesis, with sizes varying from 50 to 70 nm. NCMs were prepared with a 15% filler loading, i.e., synthesized ZIF-8. NCMs (ZIF-8) having H2 permeability of 28 Barrer and H2/CH4 selectivity of 125 outperformed neat polymer membranes in terms of separation performance at ambient temperature and 4 kg/cm2 pressure. The purity of H2 increased to as high as 95% among the measured values. The NCMs did not, however, outperform a neat polymer membrane in terms of their ability to separate mixtures of gases. Moreover, the combination of ZIF-8 as a filler with sodium alginate was new and had not been reported previously. As a result, it is worthwhile to investigate. Full article
(This article belongs to the Special Issue Synthesis and Properties of Polymeric Frameworks)
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15 pages, 3610 KiB  
Article
The Methylene Spacer Matters: The Structural and Luminescent Effects of Positional Isomerism of n-Methylpyridyltriazole Carboxylate Semi-Rigid Ligands in the Structure of Zn(II) Based Coordination Polymers
by Pilar Narea, Benjamín Hernández, Jonathan Cisterna, Alejandro Cárdenas, Pilar Amo-Ochoa, Félix Zamora, Gerzon E. Delgado, Jaime Llanos and Iván Brito
Polymers 2023, 15(4), 888; https://doi.org/10.3390/polym15040888 - 10 Feb 2023
Cited by 2 | Viewed by 1376
Abstract
Two Zn(II) coordination polymers (CPs) based on n-methylpyridyltriazole carboxylate semi-rigid organic ligands (n-MPTC), with n = 3 (L1) and 4 (L2), have been prepared at the water n-butanol interphase by reacting Zn(NO3)2·4H2O with [...] Read more.
Two Zn(II) coordination polymers (CPs) based on n-methylpyridyltriazole carboxylate semi-rigid organic ligands (n-MPTC), with n = 3 (L1) and 4 (L2), have been prepared at the water n-butanol interphase by reacting Zn(NO3)2·4H2O with NaL1 and NaL2. This allows us to systematically investigate the influence of the isomeric positional effect on their structures. The organic ligands were obtained by saponification from their respective ester precursors ethyl-5-methyl-1-(pyridin-3-ylmethyl)-1H-1,2,3-triazole-4-carboxylate (P1) and ethyl-5-methyl-1-(pyridin-4-ylmethyl)-1H-1,2,3-triazole-4-carboxylate (P2), resulting in their corresponding sodium salt forms, 3-MPTC, and 4-MPTC. The structure of the Zn(II) CPs determined by single-crystal X-ray diffraction reveals that both CPs have 2D supramolecular hydrogen bond networks. The 2D supramolecular network of [Zn(L1)]n (1) is built up by hydrogen bond interactions between oxygen and hydrogen atoms between neighboring n-methylpyridyltriazole molecules, whereas in [Zn(L2)·4H2O]n (2) the water molecules link 1D polymeric chains forming a 2D supramolecular aggregate. The structures of 1 and 2 clearly show that the isomeric effect in the semi-rigid ligands plays a vital role in constructing the Zn(II) coordination polymers, helped by the presence of the methylene spacer group, in the final structural conformation. The structures of 1 and 2 significantly affect their luminescent properties. Thus, while 2 shows strong emission at room temperature centered at 367 nm, the emission of 1 is quenched substantially. Full article
(This article belongs to the Special Issue Synthesis and Properties of Polymeric Frameworks)
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16 pages, 2085 KiB  
Article
Exploring the Potential of a Highly Scalable Metal-Organic Framework CALF-20 for Selective Gas Adsorption at Low Pressure
by Mostafa Yousefzadeh Borzehandani, Majid Namayandeh Jorabchi, Emilia Abdulmalek, Mohd Basyaruddin Abdul Rahman and Muhammad Alif Mohammad Latif
Polymers 2023, 15(3), 760; https://doi.org/10.3390/polym15030760 - 02 Feb 2023
Cited by 3 | Viewed by 4473
Abstract
In this study, the ability of the highly scalable metal-organic framework (MOF) CALF-20 to adsorb polar and non-polar gases at low pressure was investigated using grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations. The results from the simulated adsorption isotherms revealed [...] Read more.
In this study, the ability of the highly scalable metal-organic framework (MOF) CALF-20 to adsorb polar and non-polar gases at low pressure was investigated using grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations. The results from the simulated adsorption isotherms revealed that the highest loading was achieved for SO2 and Cl2, while the lowest loading was found for F2 molecules. The analysis of interaction energies indicated that SO2 molecules were able to form the strongest adsorbent-adsorbate interactions and had a tight molecular packing due to their polarity and angular structure. Additionally, Cl2 gas was found to be highly adsorbed due to its large van der Waals surface and strong chemical affinity in CALF-20 pores. MD simulations showed that SO2 and Cl2 had the lowest mobility inside CALF-20 pores. The values of the Henry coefficient and isosteric heat of adsorption confirmed that CALF-20 could selectively adsorb SO2 and Cl2. Based on the results, it was concluded that CALF-20 is a suitable adsorbent for SO2 and Cl2 but not for F2. This research emphasizes the importance of molecular size, geometry, and polarity in determining the suitability of a porous material as an adsorbent for specific adsorbates. Full article
(This article belongs to the Special Issue Synthesis and Properties of Polymeric Frameworks)
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Review

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31 pages, 5685 KiB  
Review
Covalent Organic Frameworks (COFs) as Multi-Target Multifunctional Frameworks
by Syed Nasir Abbas Bukhari, Naveed Ahmed, Muhammad Wahab Amjad, Muhammad Ajaz Hussain, Mervat A. Elsherif, Hasan Ejaz and Nasser H. Alotaibi
Polymers 2023, 15(2), 267; https://doi.org/10.3390/polym15020267 - 04 Jan 2023
Cited by 15 | Viewed by 5001
Abstract
Covalent organic frameworks (COFs), synthesized from organic monomers, are porous crystalline polymers. Monomers get attached through strong covalent bonds to form 2D and 3D structures. The adjustable pore size, high stability (chemical and thermal), and metal-free nature of COFs make their applications wider. [...] Read more.
Covalent organic frameworks (COFs), synthesized from organic monomers, are porous crystalline polymers. Monomers get attached through strong covalent bonds to form 2D and 3D structures. The adjustable pore size, high stability (chemical and thermal), and metal-free nature of COFs make their applications wider. This review article briefly elaborates the synthesis, types, and applications (catalysis, environmental Remediation, sensors) of COFs. Furthermore, the applications of COFs as biomaterials are comprehensively discussed. There are several reported COFs having good results in anti-cancer and anti-bacterial treatments. At the end, some newly reported COFs having anti-viral and wound healing properties are also discussed. Full article
(This article belongs to the Special Issue Synthesis and Properties of Polymeric Frameworks)
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