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Artículos de revistas sobre el tema "Crystalline Covalent Organic Frameworks"

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Autor: Grafiati

Publicado: 6 de septiembre de 2023

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1

Yuan, Shushan, Xin Li, Junyong Zhu, Gang Zhang, Peter Van Puyvelde y Bart Van der Bruggen. "Covalent organic frameworks for membrane separation". Chemical Society Reviews 48, n.º 10 (2019): 2665–81. http://dx.doi.org/10.1039/c8cs00919h.

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2

Cote, A. P. "Porous, Crystalline, Covalent Organic Frameworks". Science 310, n.º 5751 (18 de noviembre de 2005): 1166–70. http://dx.doi.org/10.1126/science.1120411.

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3

Zhang, Weiwei, Linjiang Chen, Sheng Dai, Chengxi Zhao, Cheng Ma, Lei Wei, Minghui Zhu et al. "Reconstructed covalent organic frameworks". Nature 604, n.º 7904 (6 de abril de 2022): 72–79. http://dx.doi.org/10.1038/s41586-022-04443-4.

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AbstractCovalent organic frameworks (COFs) are distinguished from other organic polymers by their crystallinity1–3, but it remains challenging to obtain robust, highly crystalline COFs because the framework-forming reactions are poorly reversible4,5. More reversible chemistry can improve crystallinity6–9, but this typically yields COFs with poor physicochemical stability and limited application scope5. Here we report a general and scalable protocol to prepare robust, highly crystalline imine COFs, based on an unexpected framework reconstruction. In contrast to standard approaches in which monomers are initially randomly aligned, our method involves the pre-organization of monomers using a reversible and removable covalent tether, followed by confined polymerization. This reconstruction route produces reconstructed COFs with greatly enhanced crystallinity and much higher porosity by means of a simple vacuum-free synthetic procedure. The increased crystallinity in the reconstructed COFs improves charge carrier transport, leading to sacrificial photocatalytic hydrogen evolution rates of up to 27.98 mmol h−1 g−1. This nanoconfinement-assisted reconstruction strategy is a step towards programming function in organic materials through atomistic structural control.

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4

Zhao, Chenfei, Hao Lyu, Zhe Ji, Chenhui Zhu y Omar M. Yaghi. "Ester-Linked Crystalline Covalent Organic Frameworks". Journal of the American Chemical Society 142, n.º 34 (4 de agosto de 2020): 14450–54. http://dx.doi.org/10.1021/jacs.0c07015.

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5

Ma, Jian-Xin, Jian Li, Yi-Fan Chen, Rui Ning, Yu-Fei Ao, Jun-Min Liu, Junliang Sun, De-Xian Wang y Qi-Qiang Wang. "Cage Based Crystalline Covalent Organic Frameworks". Journal of the American Chemical Society 141, n.º 9 (18 de febrero de 2019): 3843–48. http://dx.doi.org/10.1021/jacs.9b00665.

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6

Bull, O. S., I. Bull, G. K. Amadi y C. O. Odu. "Covalent Organic Frameworks (COFS): A Review". Journal of Applied Sciences and Environmental Management 26, n.º 1 (10 de marzo de 2022): 145–79. http://dx.doi.org/10.4314/jasem.v26i1.22.

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The search for supramolecular promising porous crystalline materials with diverse applications such as gas storage, catalysis, chemo-sensing, energy storage, and optoelectronic have led to the design and construction of Covalent Organic Frameworks (COFs). COFs are a class of porous crystalline polymers that allow the precise integration of organic building blocks and linkage motifs to create predesigned skeletons and nano-porous materials. In this review article, a historic overview of the chemistry of COFs, survey of the advances in topology design and synthetic reactions, basic design principles that govern the formation of COFs as porous crystalline polymers as well as common synthetic procedures and characterization techniques are discussed. Furthermore some challenges associate with the synthesis of COFs are highlighted. We hope that this review will help researchers, industrialists and academics in no mean feat.

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7

Uribe-Romo, Fernando J., Christian J. Doonan, Hiroyasu Furukawa, Kounosuke Oisaki y Omar M. Yaghi. "Crystalline Covalent Organic Frameworks with Hydrazone Linkages". Journal of the American Chemical Society 133, n.º 30 (3 de agosto de 2011): 11478–81. http://dx.doi.org/10.1021/ja204728y.

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8

Lyu, Hao, Christian S. Diercks, Chenhui Zhu y Omar M. Yaghi. "Porous Crystalline Olefin-Linked Covalent Organic Frameworks". Journal of the American Chemical Society 141, n.º 17 (19 de abril de 2019): 6848–52. http://dx.doi.org/10.1021/jacs.9b02848.

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9

Alahakoon, Sampath B., Shashini D. Diwakara, Christina M. Thompson y Ronald A. Smaldone. "Supramolecular design in 2D covalent organic frameworks". Chemical Society Reviews 49, n.º 5 (2020): 1344–56. http://dx.doi.org/10.1039/c9cs00884e.

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2D covalent organic frameworks (COFs) are a class of porous polymers with crystalline structures. This tutorial review discusses how the concepts of supramolecular chemistry are used to add form and function to COFs through their non-covalent bonds.

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10

Vazquez-Molina, Demetrius A., Giovanna M. Pope, Andrew A. Ezazi, Jose L. Mendoza-Cortes, James K. Harper y Fernando J. Uribe-Romo. "Framework vs. side-chain amphidynamic behaviour in oligo-(ethylene oxide) functionalised covalent-organic frameworks". Chemical Communications 54, n.º 50 (2018): 6947–50. http://dx.doi.org/10.1039/c8cc04292f.

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11

Thote, Jayshri, Harshitha Barike Aiyappa, Raya Rahul Kumar, Sharath Kandambeth, Bishnu P. Biswal, Digambar Balaji Shinde, Neha Chaki Roy y Rahul Banerjee. "Constructing covalent organic frameworks in waterviadynamic covalent bonding". IUCrJ 3, n.º 6 (14 de septiembre de 2016): 402–7. http://dx.doi.org/10.1107/s2052252516013762.

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The formation of keto-enamine based crystalline, porous polymers in water is investigated for the first time. Facile access to the Schiff base reaction in water has been exploited to synthesize stable porous structures using the principles of Dynamic Covalent Chemistry (DCC). Most credibly, the water-based Covalent Organic Frameworks (COFs) possess chemical as well as physical properties such as crystallinity, surface area and porosity, which is comparable to their solvothermal counterparts. The formation of COFs in water is further investigated by understanding the nature of the monomers formed using hydroxy and non-hydroxy analogues of the aldehyde. This synthetic route paves a new way to synthesize COFs using a viable, greener route by utilization of the DCC principles in conjunction with the keto–enol tautomerism to synthesize useful, stable and porous COFs in water.

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12

Das, Saikat, Jie Feng y Wei Wang. "Covalent Organic Frameworks in Separation". Annual Review of Chemical and Biomolecular Engineering 11, n.º 1 (7 de junio de 2020): 131–53. http://dx.doi.org/10.1146/annurev-chembioeng-112019-084830.

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In the wake of sustainable development, materials research is going through a green revolution that is putting energy-efficient and environmentally friendly materials and methods in the limelight. In this quest for greener alternatives, covalent organic frameworks (COFs) have emerged as a new generation of designable crystalline porous polymers for a wide array of clean-energy and environmental applications. In this contribution, we categorically review the merits and shortcomings of COF bulk powders, nanosheets, freestanding thin films/membranes, and membranes on porous supports in various separation processes, including separation of gases, pervaporation, organic solvent nanofiltration, water purification, radionuclide sequestration, and chiral separations, with particular reference to COF material pore size, host–guest interactions, stability, selectivity, and permeability. This review covers the fabrication strategies of nanosheets, films, and membranes, as well as performance parameters, and provides an overview of the separation landscape with COFs in relation to other porous polymers, while seeking to interpret the future research opportunities in this field.

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13

Bukhari, Syed Nasir Abbas, Naveed Ahmed, Muhammad Wahab Amjad, Muhammad Ajaz Hussain, Mervat A. Elsherif, Hasan Ejaz y Nasser H. Alotaibi. "Covalent Organic Frameworks (COFs) as Multi-Target Multifunctional Frameworks". Polymers 15, n.º 2 (4 de enero de 2023): 267. http://dx.doi.org/10.3390/polym15020267.

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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.

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14

González-Sálamo, Javier, Gabriel Jiménez-Skrzypek, Cecilia Ortega-Zamora, Miguel Ángel González-Curbelo y Javier Hernández-Borges. "Covalent Organic Frameworks in Sample Preparation". Molecules 25, n.º 14 (20 de julio de 2020): 3288. http://dx.doi.org/10.3390/molecules25143288.

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Covalent organic frameworks (COFs) can be classified as emerging porous crystalline polymers with extremely high porosity and surface area size, and good thermal stability. These properties have awakened the interests of many areas, opening new horizons of research and applications. In the Analytical Chemistry field, COFs have found an important application in sample preparation approaches since their inherent properties clearly match, in a good number of cases, with the ideal characteristics of any extraction or clean-up sorbent. The review article is meant to provide a detailed overview of the different COFs that have been used up to now for sample preparation (i.e., solid-phase extraction in its most relevant operational modes—conventional, dispersive, magnetic/solid-phase microextraction and stir-bar sorptive extraction); the extraction devices/formats in which they have been applied; and their performances and suitability for this task.

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15

Xu, Liqian, San-Yuan Ding, Junmin Liu, Junliang Sun, Wei Wang y Qi-Yu Zheng. "Highly crystalline covalent organic frameworks from flexible building blocks". Chemical Communications 52, n.º 25 (2016): 4706–9. http://dx.doi.org/10.1039/c6cc01171c.

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Highly crystalline covalent organic frameworks were synthesized from flexible 2,4,6-triaryloxy-1,3,5-triazine building blocks on a gram scale, and the cooperative weak interactions play a key role in the formation of porous frameworks.

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16

Jarju, Jenni J., Ana M. Lavender, Begoña Espiña, Vanesa Romero y Laura M. Salonen. "Covalent Organic Framework Composites: Synthesis and Analytical Applications". Molecules 25, n.º 22 (18 de noviembre de 2020): 5404. http://dx.doi.org/10.3390/molecules25225404.

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In the recent years, composite materials containing covalent organic frameworks (COFs) have raised increasing interest for analytical applications. To date, various synthesis techniques have emerged that allow for the preparation of crystalline and porous COF composites with various materials. Herein, we summarize the most common methods used to gain access to crystalline COF composites with magnetic nanoparticles, other oxide materials, graphene and graphene oxide, and metal nanoparticles. Additionally, some examples of stainless steel, polymer, and metal-organic framework composites are presented. Thereafter, we discuss the use of these composites for chromatographic separation, environmental remediation, and sensing.

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17

Zhou, Junwen y Bo Wang. "Emerging crystalline porous materials as a multifunctional platform for electrochemical energy storage". Chemical Society Reviews 46, n.º 22 (2017): 6927–45. http://dx.doi.org/10.1039/c7cs00283a.

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18

Evans, Austin M., Ioannina Castano, Alexandra Brumberg, Lucas R. Parent, Amanda R. Corcos, Rebecca L. Li, Nathan C. Flanders et al. "Emissive Single-Crystalline Boroxine-Linked Colloidal Covalent Organic Frameworks". Journal of the American Chemical Society 141, n.º 50 (19 de noviembre de 2019): 19728–35. http://dx.doi.org/10.1021/jacs.9b08815.

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19

Xu, Hong, Shanshan Tao y Donglin Jiang. "Proton conduction in crystalline and porous covalent organic frameworks". Nature Materials 15, n.º 7 (4 de abril de 2016): 722–26. http://dx.doi.org/10.1038/nmat4611.

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20

Zhang, Bing, Mufeng Wei, Haiyan Mao, Xiaokun Pei, Sultan A. Alshmimri, Jeffrey A. Reimer y Omar M. Yaghi. "Crystalline Dioxin-Linked Covalent Organic Frameworks from Irreversible Reactions". Journal of the American Chemical Society 140, n.º 40 (24 de septiembre de 2018): 12715–19. http://dx.doi.org/10.1021/jacs.8b08374.

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21

Xu, Hai-Sen, San-Yuan Ding, Wan-Kai An, Han Wu y Wei Wang. "Constructing Crystalline Covalent Organic Frameworks from Chiral Building Blocks". Journal of the American Chemical Society 138, n.º 36 (6 de septiembre de 2016): 11489–92. http://dx.doi.org/10.1021/jacs.6b07516.

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22

Jin, Enquan, Keyu Geng, Ka Hung Lee, Weiming Jiang, Juan Li, Qiuhong Jiang, Stephan Irle y Donglin Jiang. "Topology‐Templated Synthesis of Crystalline Porous Covalent Organic Frameworks". Angewandte Chemie 132, n.º 29 (18 de mayo de 2020): 12260–67. http://dx.doi.org/10.1002/ange.202004728.

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23

Jin, Enquan, Keyu Geng, Ka Hung Lee, Weiming Jiang, Juan Li, Qiuhong Jiang, Stephan Irle y Donglin Jiang. "Topology‐Templated Synthesis of Crystalline Porous Covalent Organic Frameworks". Angewandte Chemie International Edition 59, n.º 29 (18 de mayo de 2020): 12162–69. http://dx.doi.org/10.1002/anie.202004728.

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24

Fang, Mingyuan, Carmen Montoro y Mona Semsarilar. "Metal and Covalent Organic Frameworks for Membrane Applications". Membranes 10, n.º 5 (22 de mayo de 2020): 107. http://dx.doi.org/10.3390/membranes10050107.

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Better and more efficient membranes are needed to face imminent and future scientific, technological and societal challenges. New materials endowed with enhanced properties are required for the preparation of such membranes. Metal and Covalent Organic Frameworks (MOFs and COFs) are a new class of crystalline porous materials with large surface area, tuneable pore size, structure, and functionality, making them a perfect candidate for membrane applications. In recent years an enormous number of articles have been published on the use of MOFs and COFs in preparation of membranes for various applications. This review gathers the work reported on the synthesis and preparation of membranes containing MOFs and COFs in the last 10 years. Here we give an overview on membranes and their use in separation technology, discussing the essential factors in their synthesis as well as their limitations. A full detailed summary of the preparation and characterization methods used for MOF and COF membranes is given. Finally, applications of these membranes in gas and liquid separation as well as fuel cells are discussed. This review is aimed at both experts in the field and newcomers, including students at both undergraduate and postgraduate levels, who would like to learn about preparation of membranes from crystalline porous materials.

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25

Ma, Yunchao, Xiaozhou Liu, Xinyu Guan, Hui Li, Yusran Yusran, Ming Xue, Qianrong Fang, Yushan Yan, Shilun Qiu y Valentin Valtchev. "One-pot cascade syntheses of microporous and mesoporous pyrazine-linked covalent organic frameworks as Lewis-acid catalysts". Dalton Transactions 48, n.º 21 (2019): 7352–57. http://dx.doi.org/10.1039/c8dt05056b.

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26

Yang, Yuting, Changzheng Tu, Hongju Yin, Jianjun Liu, Feixiang Cheng y Feng Luo. "Molecular Iodine Capture by Covalent Organic Frameworks". Molecules 27, n.º 24 (19 de diciembre de 2022): 9045. http://dx.doi.org/10.3390/molecules27249045.

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The effective capture and storage of volatile molecular iodine from nuclear waste is of great significance. Covalent organic frameworks (COFs) are a class of extended crystalline porous polymers that possess unique architectures with high surface areas, long-range order, and permanent porosity. Substantial efforts have been devoted to the design and synthesis of COF materials for the capture of radioactive iodine. In this review, we first introduce research techniques for determining the mechanism of iodine capture by COF materials. Then, the influencing factors of iodine capture performance are classified, and the design principles and strategies for constructing COFs with potential for iodine capture are summarized on this basis. Finally, our personal insights on remaining challenges and future trends are outlined, in order to bring more inspiration to this hot topic of research.

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27

Bhambri, Himanshi, Sadhika Khullar, Sakshi y Sanjay K. Mandal. "Nitrogen-rich covalent organic frameworks: a promising class of sensory materials". Materials Advances 3, n.º 1 (2022): 19–124. http://dx.doi.org/10.1039/d1ma00506e.

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Covalent organic frameworks (COFs) have emerged as highly crystalline porous organic materials. Their potential has been demonstrated for use in various applications, particularly sensing with the nitrogen-rich analogs.

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28

Rodríguez-San-Miguel, D., C. Montoro y F. Zamora. "Covalent organic framework nanosheets: preparation, properties and applications". Chemical Society Reviews 49, n.º 8 (2020): 2291–302. http://dx.doi.org/10.1039/c9cs00890j.

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Covalent organic frameworks are crystalline porous materials with 2- or 3-dimensional structures designed modularly from their molecular precursors. Using bottom-up or top-down strategies, single- or few-layer materials can be obtained from them.

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29

Sanchez-Fuente, Miguel, José Lorenzo Alonso-Gómez, Laura M. Salonen, Ruben Mas-Ballesté y Alicia Moya. "Chiral Porous Organic Frameworks: Synthesis, Chiroptical Properties, and Asymmetric Organocatalytic Applications". Catalysts 13, n.º 7 (27 de junio de 2023): 1042. http://dx.doi.org/10.3390/catal13071042.

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Chiral porous organic frameworks have emerged in the last decade as candidates for heterogeneous asymmetric organocatalysis. This review aims to provide a summary of the synthetic strategies towards the design of chiral organic materials, the characterization techniques used to evaluate their chirality, and their applications in asymmetric organocatalysis. We briefly describe the types of porous organic frameworks, including crystalline (covalent organic frameworks, COFs) and amorphous (conjugated microporous polymers, CMPs; covalent triazine frameworks, CTFs and porous aromatic frameworks, PAFs) materials. Furthermore, the strategies reported to incorporate chirality in porous organic materials are presented. We finally focus on the applications of chiral porous organic frameworks in asymmetric organocatalytic reactions, summarizing and categorizing all the available literature in the field.

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30

Evans, Austin M., Lucas R. Parent, Nathan C. Flanders, Ryan P. Bisbey, Edon Vitaku, Matthew S. Kirschner, Richard D. Schaller, Lin X. Chen, Nathan C. Gianneschi y William R. Dichtel. "Seeded growth of single-crystal two-dimensional covalent organic frameworks". Science 361, n.º 6397 (21 de junio de 2018): 52–57. http://dx.doi.org/10.1126/science.aar7883.

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Polymerization of monomers into periodic two-dimensional networks provides structurally precise, layered macromolecular sheets that exhibit desirable mechanical, optoelectronic, and molecular transport properties. Two-dimensional covalent organic frameworks (2D COFs) offer broad monomer scope but are generally isolated as powders comprising aggregated nanometer-scale crystallites. We found that 2D COF formation could be controlled using a two-step procedure in which monomers are added slowly to preformed nanoparticle seeds. The resulting 2D COFs are isolated as single-crystalline, micrometer-sized particles. Transient absorption spectroscopy of the dispersed COF nanoparticles revealed improvement in signal quality by two to three orders of magnitude relative to polycrystalline powder samples, and suggests exciton diffusion over longer length scales than those obtained through previous approaches. These findings should enable a broad exploration of synthetic 2D polymer structures and properties.

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31

Zhu, Haijin, Tiantian Xu, Long Chen y Maria Forsyth. "Proton transport in crystalline, porous covalent organic frameworks: a NMR study". Journal of Materials Chemistry A 8, n.º 40 (2020): 20939–45. http://dx.doi.org/10.1039/d0ta06927b.

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This work highlights the importance of both the surface chemistry and the persistence length of crystalline pores in COFs. Protons are found to transfer predominantly through grain boundary regions instead of the crystalline pores.

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32

Shinde, Digambar Balaji, Sharath Kandambeth, Pradip Pachfule, Raya Rahul Kumar y Rahul Banerjee. "Bifunctional covalent organic frameworks with two dimensional organocatalytic micropores". Chemical Communications 51, n.º 2 (2015): 310–13. http://dx.doi.org/10.1039/c4cc07104b.

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We report the successful incorporation of bifunctional (acid/base) catalytic sites in the crystalline organocatalytic porous COF (2,3-DhaTph). Due to the presence of acidic (catachol) and basic (porphyrin) sites, 2,3-DhaTph shows significant selectivity, reusability, and excellent ability to perform the cascade reaction.

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33

Haase, F., K. Gottschling, L. Stegbauer, L. S. Germann, R. Gutzler, V. Duppel, V. S. Vyas, K. Kern, R. E. Dinnebier y B. V. Lotsch. "Tuning the stacking behaviour of a 2D covalent organic framework through non-covalent interactions". Materials Chemistry Frontiers 1, n.º 7 (2017): 1354–61. http://dx.doi.org/10.1039/c6qm00378h.

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The distinct stacking behaviour of two related 2D covalent organic frameworks is traced back to geometric and electronic features of their building blocks. Self-complementarity and donor–acceptor-type interactions are identified as design principles to access highly crystalline COFs.

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34

Yang, Dong-Hui, Zhao-Quan Yao, Dihua Wu, Ying-Hui Zhang, Zhen Zhou y Xian-He Bu. "Structure-modulated crystalline covalent organic frameworks as high-rate cathodes for Li-ion batteries". Journal of Materials Chemistry A 4, n.º 47 (2016): 18621–27. http://dx.doi.org/10.1039/c6ta07606h.

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35

Haase, Frederik y Bettina V. Lotsch. "Solving the COF trilemma: towards crystalline, stable and functional covalent organic frameworks". Chemical Society Reviews 49, n.º 23 (2020): 8469–500. http://dx.doi.org/10.1039/d0cs01027h.

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36

Fang, Qianrong, Junhua Wang, Shuang Gu, Robert B. Kaspar, Zhongbin Zhuang, Jie Zheng, Hongxia Guo, Shilun Qiu y Yushan Yan. "3D Porous Crystalline Polyimide Covalent Organic Frameworks for Drug Delivery". Journal of the American Chemical Society 137, n.º 26 (25 de junio de 2015): 8352–55. http://dx.doi.org/10.1021/jacs.5b04147.

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37

Karak, Suvendu y Rahul Banerjee. "Construction of highly crystalline ultraporous covalent organic frameworks in seconds". Acta Crystallographica Section A Foundations and Advances 73, a2 (1 de diciembre de 2017): C456. http://dx.doi.org/10.1107/s2053273317091173.

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38

Yu, Xiuqin, Cuiyan Li, Yunchao Ma, Daohao Li, Hui Li, Xinyu Guan, Yushan Yan, Valentin Valtchev, Shilun Qiu y Qianrong Fang. "Crystalline, porous, covalent polyoxometalate-organic frameworks for lithium-ion batteries". Microporous and Mesoporous Materials 299 (junio de 2020): 110105. http://dx.doi.org/10.1016/j.micromeso.2020.110105.

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39

Ghazi, Zahid Ali, Abdul Muqsit Khattak, Rashid Iqbal, Rashid Ahmad, Adnan Ali Khan, Muhammad Usman, Faheem Nawaz et al. "Adsorptive removal of Cd2+ from aqueous solutions by a highly stable covalent triazine-based framework". New Journal of Chemistry 42, n.º 12 (2018): 10234–42. http://dx.doi.org/10.1039/c8nj01778f.

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40

Liu, Yaozu, Yujie Wang, Hui Li, Xinyu Guan, Liangkui Zhu, Ming Xue, Yushan Yan, Valentin Valtchev, Shilun Qiu y Qianrong Fang. "Ambient aqueous-phase synthesis of covalent organic frameworks for degradation of organic pollutants". Chemical Science 10, n.º 46 (2019): 10815–20. http://dx.doi.org/10.1039/c9sc03725j.

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41

Zhu, Dongyang, Yifan Zhu, Qianqian Yan, Morgan Barnes, Fangxin Liu, Pingfeng Yu, Chia-Ping Tseng et al. "Pure Crystalline Covalent Organic Framework Aerogels". Chemistry of Materials 33, n.º 11 (24 de mayo de 2021): 4216–24. http://dx.doi.org/10.1021/acs.chemmater.1c01122.

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42

Ding, San-Yuan, Li-Hua Li, Xiao-Lin Feng y Wei Wang. "Salen-based crystalline covalent organic framework". Acta Crystallographica Section A Foundations and Advances 73, a2 (1 de diciembre de 2017): C459. http://dx.doi.org/10.1107/s2053273317091148.

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43

Kong, Weifu, Wei Jia, Rong Wang, Yifan Gong, Changchun Wang, Peiyi Wu y Jia Guo. "Amorphous-to-crystalline transformation toward controllable synthesis of fibrous covalent organic frameworks enabling promotion of proton transport". Chemical Communications 55, n.º 1 (2019): 75–78. http://dx.doi.org/10.1039/c8cc08590k.

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44

EL-Mahdy, Ahmed F. M., Ming-Yi Lai y Shiao-Wei Kuo. "A highly fluorescent covalent organic framework as a hydrogen chloride sensor: roles of Schiff base bonding and π-stacking". Journal of Materials Chemistry C 8, n.º 28 (2020): 9520–28. http://dx.doi.org/10.1039/d0tc01872d.

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45

Pachfule, Pradip, Amitava Acharjya, Jérôme Roeser, Ramesh P. Sivasankaran, Meng-Yang Ye, Angelika Brückner, Johannes Schmidt y Arne Thomas. "Donor–acceptor covalent organic frameworks for visible light induced free radical polymerization". Chemical Science 10, n.º 36 (2019): 8316–22. http://dx.doi.org/10.1039/c9sc02601k.

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Crystalline and porous covalent organic frameworks (COFs) with donor-acceptor moieties in their backbone are utilized as initiators for visible light induced radical polymerization. The COFs are efficient photoinitiators, maintaining their structural integrity for several cycles.

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46

Zhang, Shiji, Danqing Liu y Guangtong Wang. "Covalent Organic Frameworks for Chemical and Biological Sensing". Molecules 27, n.º 8 (18 de abril de 2022): 2586. http://dx.doi.org/10.3390/molecules27082586.

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Covalent organic frameworks (COFs) are a class of crystalline porous organic polymers with polygonal porosity and highly ordered structures. The most prominent feature of the COFs is their excellent crystallinity and highly ordered modifiable one-dimensional pores. Since the first report of them in 2005, COFs with various structures were successfully synthesized and their applications in a wide range of fields including gas storage, pollution removal, catalysis, and optoelectronics explored. In the meantime, COFs also exhibited good performance in chemical and biological sensing, because their highly ordered modifiable pores allowed the selective adsorption of the analytes, and the interaction between the analytes and the COFs’ skeletons may lead to a detectable change in the optical or electrical properties of the COFs. In this review, we firstly demonstrate the basic principles of COFs-based chemical and biological sensing, then briefly summarize the applications of COFs in sensing some substances of practical value, including some gases, ions, organic compounds, and biomolecules. Finally, we discuss the trends and the challenges of COFs-based chemical and biological sensing.

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47

Chen, Weiben, Zongfan Yang, Zhen Xie, Yusen Li, Xiang Yu, Fanli Lu y Long Chen. "Benzothiadiazole functionalized D–A type covalent organic frameworks for effective photocatalytic reduction of aqueous chromium(vi)". Journal of Materials Chemistry A 7, n.º 3 (2019): 998–1004. http://dx.doi.org/10.1039/c8ta10046b.

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Photocatalytic covalent organic frameworks were facilely constructed via the integration of alternative donor–acceptor units into the 2D extended and crystalline scaffolds, which exhibit excellent photodegradation efficiency toward aqueous Cr(vi).

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48

Pakhira, Srimanta y Jose L. Mendoza-Cortes. "Intercalation of first row transition metals inside covalent-organic frameworks (COFs): a strategy to fine tune the electronic properties of porous crystalline materials". Physical Chemistry Chemical Physics 21, n.º 17 (2019): 8785–96. http://dx.doi.org/10.1039/c8cp07396a.

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Covalent-organic frameworks (COFs) have emerged as an important class of nano-porous crystalline materials with many potential applications. Here we present an strategy to control their electronic properties.

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49

Fischbach, Danyon M., Grace Rhoades, Charlie Espy, Fallon Goldberg y Brian J. Smith. "Controlling the crystalline structure of imine-linked 3D covalent organic frameworks". Chemical Communications 55, n.º 25 (2019): 3594–97. http://dx.doi.org/10.1039/c8cc09571j.

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50

Hu, Yiming, Nathan Dunlap, Shun Wan, Shuanglong Lu, Shaofeng Huang, Isaac Sellinger, Michael Ortiz, Yinghua Jin, Se-hee Lee y Wei Zhang. "Crystalline Lithium Imidazolate Covalent Organic Frameworks with High Li-Ion Conductivity". Journal of the American Chemical Society 141, n.º 18 (15 de abril de 2019): 7518–25. http://dx.doi.org/10.1021/jacs.9b02448.

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