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Recent Advances in Covalent Organic Frameworks

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

Deadline for manuscript submissions: closed (30 June 2024) | Viewed by 1250

Special Issue Editor


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Guest Editor
Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
Interests: porous materials; covalent organic frameworks; metal-organic frameworks; X-ray diffraction; separation; sensing; catalysis; water treatment

Special Issue Information

Dear Colleagues,

Over the past decade, great efforts have been invested in developing covalent organic frameworks (COFs), an emerging class of crystalline porous polymers assembled by organic building units through strong covalent bonds. Due to their notable intrinsic features, such as a predesignable and highly order structure, low density, exceptional stability, high surface area, and readily adjustable pore size and chemical environment, COFs have been proposed as ideal materials for wide-ranging applications, including in gas adsorption and separation, optoelectronics, drug delivery, heterogeneous catalysis, sensing, and energy storage. In addition, due to COFs’ processability, COF-based composites/devices, including membranes, films, electrodes, etc., have recently received substantial attention.

This Special Issue, "Recent Advances in Covalent Organic Frameworks", is inspired by the growing interest and application of COFs and aims to identify and review the recent developments and breakthroughs in these fields. We invite original contributions as well as review articles relating the synthesis, characterization, and application of COFs and hope to provide new insights and ideas that prompt the further development of COFs.

Prof. Dr. Hao-Long Zhou
Guest Editor

Manuscript Submission Information

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Keywords

  • covalent organic frameworks
  • COF-based composites
  • COF-based devices
  • sorption
  • catalysis
  • sensing
  • conductivity
  • environmental applications

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Published Papers (1 paper)

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Research

12 pages, 3791 KiB  
Article
Two-Dimensional Covalent Organic Frameworks with Carbazole-Embedded Frameworks Facilitate Photocatalytic and Electrocatalytic Processes
by Yuchen Xiao, Shanyue Wei, Xiaowei Wu and Canzhong Lu
Molecules 2024, 29(21), 5071; https://doi.org/10.3390/molecules29215071 - 26 Oct 2024
Viewed by 923
Abstract
Catalytic technologies are pivotal in enhancing energy efficiency, promoting clean energy production, and reducing energy consumption in the chemical industry. The pursuit of novel catalysts for renewable energy is a long-term goal for researchers. In this work, we synthesized three two-dimensional covalent organic [...] Read more.
Catalytic technologies are pivotal in enhancing energy efficiency, promoting clean energy production, and reducing energy consumption in the chemical industry. The pursuit of novel catalysts for renewable energy is a long-term goal for researchers. In this work, we synthesized three two-dimensional covalent organic frameworks (COFs) featuring electron-rich carbazole-based architectures and evaluated their catalytic performance in photocatalytic organic reactions and electrocatalytic oxygen reduction reactions (ORRs). Pyrene-functionalized COF, termed as FCTD-TAPy, demonstrated excellent photocatalytic performance for amino oxidation coupling and showed a remarkable preference for substrates with electron-withdrawing groups (up to >99% Conv. and >99% Sel). Furthermore, FCTD-TAPy favored a four-electron transfer pathway during the ORR and exhibited favorable reaction kinetics (51.07 mV/dec) and a high turnover frequency (0.011 s−1). In contrast, the ORR of benzothiadiazole-based FCTD-TABT favored a two-electron transfer pathway, which exhibited a maximum double-layer capacitance of 14.26 mF cm−2, a Tafel slope of 53.01 mV/dec, and a hydrogen peroxide generation rate of 70.3 mmol g−1 h−1. This work underscores the potential of carbazole-based COFs as advanced catalytic materials and offers new insights into the design of metal-free COFs for enhanced catalytic performance. Full article
(This article belongs to the Special Issue Recent Advances in Covalent Organic Frameworks)
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