Modulated covalent organic frameworks with higher specific surface area for the ultrasensitive detection of polybrominated biphenyls

Zhou, Suxin; Kuang, Yixin; Shi, Yueru; Hu, Yalan; Chen, Luyi; Zheng, Juan; Ouyang, Gangfeng

doi:10.1016/j.cej.2022.139743

Cited by 30 publications

(5 citation statements)

References 32 publications

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“…These groups induce electron delocalization away from the oxygen atom on the central benzene ring, consequently fortifying interlayer interactions. This fortification plays a pivotal role in stabilizing the CTFs and bolstering their crystallization. ,, These interlayer interactions wield substantial influence in directing the formation of the layered stacking structure, thereby exerting profound effects on the crystallinity and porosity of the resulting CTFs. To investigate the interlayer π–π interactions, the Independent Gradient Model based on atomic densities, as derived from the Hirshfeld partition analysis of the actual molecular electron density (IGMH), was employed .…”

Section: Resultsmentioning

confidence: 99%

Increasing Donor–Acceptor Interactions and Particle Dispersibility of Covalent Triazine Frameworks for Higher Crystallinity and Enhanced Photocatalytic Activity

Wang,

Shi,

et al. 2024

ACS Appl. Mater. Interfaces

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Covalent triazine frameworks (CTFs) have recently emerged as an efficient class of photocatalysts due to their structural diversity and excellent stability. Nevertheless, the synthetic reactions of CTFs have usually suffered from poor reversibility, resulting in a low crystallinity of the materials. Here, we report the introduction of methoxy groups on the monomer 2,5-diphenylthiazolo [5,4-d]thiazole to reinforce interlayer π−π interactions of the resulting donor−acceptor type CTFs, which improved crystallinity, further increasing the visible light absorption range and allowing for efficient separation and transport of carriers. The morphology is strongly correlated to the wettability, which has a significant impact on the mass transfer capacity and photocatalytic activity in the photocatalytic reaction. To further improve crystallinity and photocatalytic activity, CTF-NWU-T3 photocatalysts in a bowl shape were prepared using a SiO 2 template. The energy band structure, photocatalytic hydrogen evolution, and pollutant degradation efficiency of involved materials were investigated. The donor−acceptor type CTF-NWU-T3 with a bowl-shaped morphology, synthesized using the template method and the introduction of methoxy groups, exhibited an excellent photocatalytic hydrogen production rate of 32064 μmol•h −1 •g −1 . This study highlights the significance of improving donor−acceptor interactions and increasing the dispersibility of catalyst particles in dispersion to enhance the photocatalytic activity of heterogeneous photocatalysts.

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Section: Resultsmentioning

confidence: 99%

Increasing Donor–Acceptor Interactions and Particle Dispersibility of Covalent Triazine Frameworks for Higher Crystallinity and Enhanced Photocatalytic Activity

Wang,

Shi,

et al. 2024

ACS Appl. Mater. Interfaces

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“…COFs as SPME coatings, prepared by physical adhesion, the sol–gel method, in situ growth, and chemical cross-linking, have recently attracted considerable attention for the analysis of organic pollutants, including polycyclic aromatic hydrocarbons [ 94 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 111 , 112 ], phenols [ 97 , 113 , 114 , 115 ], polybrominated diphenyl ethers [ 98 , 100 , 116 , 117 , 118 , 119 , 120 ], polyhalogenated biphenyls [ 99 , 121 , 122 ], pesticides [ 123 , 124 , 125 , 126 , 127 , 128 ], and PFASs [ 129 , 130 , 131 ] in environmental samples. The COF-based coatings used for the extraction of targeted compounds in environmental samples are summarized in Table 2 .…”

Section: Covalent Organic Framework (Cofs)mentioning

confidence: 99%

“…Zhou and coworkers developed a coating based on TAPB—2,5-dimethoxyterephaldehyde (DMTP) COF using 2,5-dimethoxybenzaldehyde (DBA) as a modulator for the extraction of PBBs [ 118 ]. The material was fabricated at room temperature and deposited onto etched SS wires by means of a silicone sealant.…”

Section: Covalent Organic Framework (Cofs)mentioning

confidence: 99%

Supramolecular Materials as Solid-Phase Microextraction Coatings in Environmental Analysis

Riboni,

Ribezzi,

Bianchi

et al. 2024

Molecules

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Solid-phase microextraction (SPME) has been widely proposed for the extraction, clean-up, and preconcentration of analytes of environmental concern. Enrichment capabilities, preconcentration efficiency, sample throughput, and selectivity in extracting target compounds greatly depend on the materials used as SPME coatings. Supramolecular materials have emerged as promising porous coatings to be used for the extraction of target compounds due to their unique selectivity, three-dimensional framework, flexible design, and possibility to promote the interaction between the analytes and the coating by means of multiple oriented functional groups. The present review will cover the state of the art of the last 5 years related to SPME coatings based on metal organic frameworks (MOFs), covalent organic frameworks (COFs), and supramolecular macrocycles used for environmental applications.

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“…[1] COFs possess distinctive structural characteristics, elevated surface areas, low density, exceptional thermal stability, and adjustable pore dimensions. [2][3][4][5] In 2005, Yaghi et al have achieved the first synthesis of COFs through condensation reactions involving phenyl diboronic acid and hexahydroxytriphenylene. [6] This breakthrough swiftly has emerged as a focal point of research in the field of materials science.…”

Section: Introductionmentioning

confidence: 99%

The Cutting‐Edge Progress in Covalent Organic Framework‐Based Nanomedicine

Guo,

Liu,

Fang

et al. 2024

Advanced NanoBiomed Research

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Covalent organic frameworks (COFs) are a class of porous crystalline materials with exceptional properties, constructed through covalently linked organic units. COFs are extensively applied in the field of biomedicine, particularly in the context of anticancer treatments. First, this review summarizes the diverse synthetic methods of COFs, including solvothermal synthesis, microwave‐assisted synthesis, room temperature synthesis, interface synthesis, ionothermal techniques, mechanical grinding, and electrochemical methods, and their impacts on the material's structure and performance. Second, COFs exhibit tremendous potential in the field of cancer therapy because of their orderly lattice structure, tunable pore sizes, high surface area, and excellent thermal and chemical stability. Therefore, the article deeply explores the applications of COFs in diverse cancer treatment modalities, encompassing early diagnostic bioimaging, drug delivery, various phototherapies, chemodynamic therapy, sonodynamic therapy, radiation therapy, and their combined therapeutic strategies. Finally, the article points out current research challenges and future directions in this field.

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Modulated covalent organic frameworks with higher specific surface area for the ultrasensitive detection of polybrominated biphenyls

Cited by 30 publications

References 32 publications

Increasing Donor–Acceptor Interactions and Particle Dispersibility of Covalent Triazine Frameworks for Higher Crystallinity and Enhanced Photocatalytic Activity

Increasing Donor–Acceptor Interactions and Particle Dispersibility of Covalent Triazine Frameworks for Higher Crystallinity and Enhanced Photocatalytic Activity

Supramolecular Materials as Solid-Phase Microextraction Coatings in Environmental Analysis

The Cutting‐Edge Progress in Covalent Organic Framework‐Based Nanomedicine

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