Covalent organic frameworks: a review of synthesis methods, properties and applications for per- and poly-fluoroalkyl substances removal DOI Creative Commons
Eliasu Issaka, Mabruk Adams,

Josephine Baffoe

и другие.

Clean Technologies and Environmental Policy, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 29, 2024

Abstract Adsorption using covalent organic frameworks (COFs) is very effective and favoured for removing per- polyfluoroalkyl substances (PFAS) from various matrices. The prominent classes of COF, their synthesis methods, application in COF-based technologies PFAS adsorption myriad environments are discussed. Furthermore, the influencing characteristics distinct COF also examined. COFs have large specific surface areas porosity, offering PFASs a host sites thus high capabilities. β -Cyclodextrin-based ( -CD-COFs), ionic (iCOFs), amine-functionalised COFs, porphyrin-based hydrophobic some most notable examples as such been employed large-scale remediation. Direct post-synthetic modification two main design methodologies. general approach constructing involves reaction ion monomers with other neutral monomers. For solvothermal currently direct synthetic method. process used to synthesise tremendously impacts how effectively they adsorb PFAS. High-performance materials remediation created by researchers customising suitable techniques. authors’ objective give readers alike broad overview current status research development, including numerous challenges prospects associated COFs. Graphical abstract Application Cement Stabilized OB dump, BOF slag, Fly Ash Mixes Sustainable Pavement Material

Язык: Английский

Primary Amine-Functionalized Chiral Covalent Organic Framework Enables High-Efficiency Asymmetric Catalysis in Water DOI
Junyi Li, Kai Zhang,

Xihao Tang

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(43), С. 59379 - 59387

Опубликована: Окт. 17, 2024

Aqueous asymmetric catalysis using chiral covalent organic frameworks (COFs) represents a significant advancement but remains to be explored. Herein, we present the first example of aqueous catalyzed by primary amine-tagged D-ADP-TAPB COF. The COF was synthesized postsynthetic deprotection D-ADP-TAPB-Boc bearing protective tert-butoxycarbonyl (Boc) group, which constructed Schiff-base reaction between an alanine-derived building block (D-ADP-Boc) and 1,3,5-tris(4-aminophenyl)benzene (TAPB). crystalline exhibits uniform, spherical morphology with abundant, well-distributed amines, rendering it highly active in aldol cyclohexanone 4-nitrobenzaldehyde. Notably, this is conducted entirely water, achieving impressive yields enantiomeric excess (ee) values up 90 85%, respectively. To best our knowledge, catalyst high reactivity enantioselectivity for solely eliminating need conventional solvents. Moreover, plausible mechanism COF-mediated reactions elucidated. This work not only expands toolbox designing rare amine-functionalized COFs also opens exciting avenues developing green water-based enantioselective catalysis.

Язык: Английский

Процитировано

5
Proportionally Controlled Dual-Chiral Covalent Organic Frameworks via Thiol-Ene Click Reaction for Efficient Enantioseparation DOI

Yifang Liao,

Liqin Cao,

Qixuan Mu

и другие.

Talanta, Год журнала: 2024, Номер 283, С. 127128 - 127128

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

5
Impact of Postsynthetic Modification on the Covalent Organic Framework (COF) Structures DOI
Amir Khojastehnezhad, Ali Samie,

Anna Bisio

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 21, 2024

Covalent organic frameworks (COFs) have emerged as a versatile class of materials owing to their well-defined crystalline structures and inherent porosity. In the realm COFs, appeal lies in customizable nature, which can be further enhanced by incorporating diverse functionalities. Postsynthetic modifications (PSMs) emerge potent strategy, facilitating introduction desired functionalities postsynthesis. A significant challenge PSM pertains preserving crystallinity porosity COFs. this study, we aim investigate intricate interplay between strategies resulting porous The investigation delves into methodologies employed PSMs, elucidate distinct influences on Through comprehensive analysis recent advancements case studies, study highlights relationships among parameters, including reaction conditions, precursor selection, functional groups, impact structural features By understanding how fine-tune characteristics researchers harness knowledge design COFs with tailored properties for specific applications, contributing advancement fields. This work not only deepens our but also provides valuable insights broader other solid materials.

Язык: Английский

Процитировано

5
π–π+ Interaction Promoting the Absorption of Electroactive Chiral Selectors into the Cavity of Conductive Covalent Organic Framework for Enantioselective Sensing of Electrochemically Silent Molecules DOI

Fangqin Wang,

Lilan Tan,

J. Q. Li

и другие.

Analytical Chemistry, Год журнала: 2024, Номер 96(19), С. 7626 - 7633

Опубликована: Апрель 30, 2024

To date, achieving enantioselective electroanalysis for electrochemically silent chiral molecules is still highly desired. Here, an ionic covalent organic framework (COF) consisting of the pyridinium cation was derived from tripyridinium Zincke salt and 1,4-phenylenediamine in a one-pot reaction. The electrochemical measurements revealed that backbone contributed to electron transfer with low charge resistance. Besides, π–π+ interaction between ferrocenyl unit can promote absorption electroactive reagents into hole COF, so as afford signals by themselves, replacing testing enantiomers. As result, complex used platform effective at enantiomerically recognizing amino alcohols (prolinol, valinol, leucinol, alaninol) acids (methionine, serine, penicillamine), giving ratios current intensity l- d-enantiomers range 1.46–1.72. Moreover, density functional theory calculations determined possible intermolecular interactions enantiomers selector: namely, hydrogen bonds electrostatic attractions. Overall, present work offers strategy enlarge scope recognition based on COFs.

Язык: Английский

Процитировано

4
Research progress of stationary phase of gas chromatography based on chiral organic frameworks DOI Creative Commons

Suxin Zhou,

Yixin Kuang,

Juan Zheng

и другие.

Chinese Journal of Chromatography, Год журнала: 2024, Номер 42(1), С. 1 - 12

Опубликована: Янв. 1, 2024

Enantiomers typically show different pharmacological, toxicological, and physiological properties. Thus, the preparation of enantiopure compounds is great significance for human health sustainable development. Compared with asymmetric catalysis, enantiomeric separation simpler, faster, more efficient; as such, it has become preferred method obtaining pure enantiomers. At present, methods mainly include chromatography, nanochannel membrane separation, selective adsorption, recrystallization. In particular, gas chromatography (GC) plays an important role in enantioseparation because its high sensitivity, excellent reproducibility, outstanding processing capacity various The stationary phase key to efficiency GC, efficient, stable, cost-effective materials that could serve phases are constantly being explored. Organic frameworks, such covalent organic frameworks (COFs), metal-organic (MOFs), porous cages (POCs), (MOCs), hydrogen-bonded (HOFs), possess large specific surface areas, porosities, tunable pore sizes, easy functionalization, rendering them promising candidates mixed analytes. Research shown use GC results column resolution analytes, including

Язык: Английский

Процитировано

3
Photocatalytic Production of Hydrogen Peroxide from Covalent-Organic-Framework-Based Materials: A Mini-Review DOI Open Access

Jiayi Meng,

Yamei Huang,

Xinglin Wang

и другие.

Catalysts, Год журнала: 2024, Номер 14(7), С. 429 - 429

Опубликована: Июль 5, 2024

Hydrogen peroxide (H2O2) is one of the most environmentally friendly and versatile chemical oxidizing agents, with only O2 H2O as reaction products. It widely used in environmental protection, industrial production, medical fields. At present, production H2O2 adopts anthraquinone oxidation, but there are shortcomings such pollution environment large energy consumption. Covalent organic frameworks (COFs) a class porous crystalline materials formed by molecular building blocks connected covalent bonds. The ordered conjugated structure COFs not facilitates absorption light also promotes transport excited-state electrons. Therefore, photochemical synthesis from water oxygen using photocatalysts based on green route has attracted much attention. In this review, we provide an overview recent studies different mechanisms involved photocatalytic hydrogen peroxide. Then, summarize various strategies to improve performance. Finally, outline challenges future directions practical applications. This review highlights potential application prospects H2O2, aiming guidance for design COF-based catalysts optimization order promote scientific development field.

Язык: Английский

Процитировано

3
Transformation of vulnerable imine bond into aromatic in 3D COF for ultrastable lithium-ion batteries DOI
Zhixin Liu, Lei Gong,

Gaimei Gao

и другие.

Energy storage materials, Год журнала: 2024, Номер unknown, С. 103931 - 103931

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

3
Thiol–Ene Click Chemistry: A General Strategy for Tuning the Properties of Vinylene-Linked Covalent Organic Frameworks DOI
Xiaoling Gu, Hongyun Niu, Qing Sun

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Янв. 3, 2025

Vinylene-linked Covalent Organic Frameworks (V-2D-COFs) are a class of promising porous organic materials that feature fully π-conjugated structures, high crystallinity, ultrahigh chemical stability, and extraordinary optoelectronic properties. However, the types reactions availability monomers for synthesizing

Язык: Английский

Процитировано

0
Covalent organic frameworks as superior adsorbents for the removal of toxic substances DOI
Yubo Li, Xingjie Guo, Jian Wang

и другие.

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This review discusses the design strategies of COFs for removal toxicants, and highlights recent advancements in as robust candidates efficient various types toxicants.

Язык: Английский

Процитировано

0
Recent Advance in the Synthesis and Applications of Chiral Covalent Organic Frameworks: A Mini‐Review DOI

Qiuyi Liu,

Li Zhu,

Jing Sun

и другие.

Journal of Separation Science, Год журнала: 2025, Номер 48(2)

Опубликована: Фев. 1, 2025

ABSTRACT Chiral covalent organic frameworks (CCOFs) are emerging porous materials with tunable chiral structures, abundant pores, and high surface areas, gaining significant attentions in separation, sensing, asymmetric catalysis. This review summarizes the synthesis methods of CCOFs their applications recognition. It discusses advantages limitations three strategies, including post‐modification, direct synthesis, chiral‐induced synthesis. The also highlights potential catalysis for efficient purification, detection, molecules. Challenges future directions preparation application addressed, aiming to guide further research practical applications.

Язык: Английский

Процитировано

0