A Novel kgd‐Topological Covalent Organic Framework with Optimum Pore Size for Efficient Benzene/Cyclohexane Separation DOI Open Access

Borui Cai,

Wenhao Wu,

Xiaozeng Miao

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

Separation of benzene and cyclohexane is essential for obtaining high-purity in the chemical industry resource recovery from exhaust gas, but one most challenging separation processes due to their highly similar boiling points kinetic diameters. Herein, based on isoreticular contraction strategy, a novel covalent organic framework (i.e., HFPB-TAB-COF) with kgd topological structure average pore size 5.70 Å, between diameters (5.60 Å) (6.10 Å), synthesized benzene/cyclohexane by confinement effect. HFPB-TAB-COF has highest ideal adsorbed solution theory (IAST) selectivity 36.0 separation, can produce 0.48 mmol g

Language: Английский

Unprecedented POSS‐Linked 3D Covalent Organic Frameworks with 2‐Fold Interpenetrated scu or sqc Topology Regulated by Porphyrin Center for Photocatalytic CO2 Reduction DOI
Ying Gao,

Senzhi Li,

Lei Gong

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(26)

Published: April 15, 2024

Abstract The synthesis and characterization of porphyrin center regulated three‐dimensional covalent organic frameworks (COFs) with 2‐fold interpenetrated scu or sqc topology have been investigated. These COFs exhibit unique structural features properties, making them promising candidates for photocatalytic applications in CO 2 reduction artemisinin synthesis. serves as an anchor metal ions, allowing precise control over structures functions the frameworks. Furthermore, coordination within framework imparts desirable catalytic enabling their potential use reactions. Overall, these metal‐controlled offer exciting opportunities development advanced materials tailored functionalities.

Language: Английский

Citations

20
Exploring high-connectivity three-dimensional covalent organic frameworks: topologies, structures, and emerging applications DOI
Fengqian Chen,

Haorui Zheng,

Yusran Yusran

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 25, 2024

The design principles, development process, structural analysis, applications, challenges, and future directions of high-connectivity 3D COFs.

Language: Английский

Citations

9
The Importance and Discovery of Highly Connected Covalent Organic Framework Net Topologies DOI
Tsukasa Irie, Saikat Das, Qianrong Fang

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Furthering the field of synthetic organic chemistry from discrete molecules regime to extended structure regime, covalent frameworks (COFs) represent a new genre crystalline porous materials featuring designability with molecular-level precision, well-defined porosity, and exceptional stability imparted by robust linkages reticulating molecules. The topology COFs is principal feature that regulates their functionality usability for emerging technologies. Profound comprehension network topologies maneuvering them toward targeted applications are crucial advancing realm COF research developing novel functional exciting breakthroughs. In this Perspective, we discuss recent pursuits contributing discovery highly connected nets having topologies, assess key challenges achieving such offer insights into current scenario future directions.

Language: Английский

Citations

1
The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents DOI
Quanli Ke, Feng Xiong,

Guonan Fang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(41)

Published: Aug. 19, 2024

Abstract This review focuses on the mechanism and driving force in intractable gas separation using porous adsorbents. A variety of mixtures have been discussed, including air separation, carbon capture, hydrocarbon purification. Moreover, systems are categorized according to distinctly biased modes depending minor differences kinetic diameter, dipole/quadruple moment, polarizability adsorbates, or sorted by varied occasions (e.g., CO 2 capture from flue air) forces (thermodynamic molecular sieving). Each section highlights functionalization strategies for materials, like synthesis condition optimization organic group modifications cation exchange heteroatom doping zeolites, metal node‐organic ligand adjustments MOFs. These subsequently associated with enhanced adsorption performances (capacity, selectivity, structural/thermal stability, moisture resistance, etc.) toward analog mixtures. Finally, this also discusses future challenges prospects materials separation. Therein, combination theoretical calculation parameters adsorbents may great potential, given its fast targeting candidate deeper insights into confined pores cages.

Language: Английский

Citations

8
Advancements and applications of three-dimensional covalent organic frameworks DOI Open Access
Rui Wang, Jie Zhao, Qianrong Fang

et al.

Chemical Synthesis, Journal Year: 2024, Volume and Issue: 4(2)

Published: May 31, 2024

Covalent organic frameworks (COFs) represent an emerging class of crystalline porous polymers characterized by their pre-designed interconnected structures formed via dynamic covalent bonds. These materials have garnered widespread attention in recent years. While applications two-dimensional (2D) COFs been extensively investigated since 2005, practicality has impeded limited specific surface area and the robust π-π stacking interaction. In contrast, three-dimensional (3D) boast enhanced porosity, larger area, well-exposed functional groups, abundance reaction sites, positioning them at forefront material research. They find extensive diverse fields, including adsorption, separation, catalysis, so on. This featured article provides a comprehensive exploration latest advancements 3D across respective application domains. Additionally, we outline current challenges that must be addressed shed light on promising prospects for utilization COFs.

Language: Английский

Citations

7
Functional Covalent Organic Frameworks: Design Principles to Potential Applications DOI Creative Commons
Yusran Yusran,

Bo Miao,

Shilun Qiu

et al.

Accounts of Materials Research, Journal Year: 2024, Volume and Issue: 5(10), P. 1263 - 1278

Published: Aug. 27, 2024

ConspectusCovalent organic frameworks (COFs) represent an emerging class of crystalline porous polymers synthesized by linking predesigned building units into targeted repetitive networks. The unique features COFs stem from their modular synthesis, allowing for precise control over the chemical composition and functionalization on both skeleton pore walls. Topologically, are defined not nature but symmetry dimensions units, resulting in 2D 3D structures with distinct surface areas, architectures, arrangements functional moieties. combination geometries results that can be precisely controlled modified. This is vital applications requiring materials specific sizes, group distributions. Particularly, show great potential field gas storage separation, energy conversion, catalysis, sensing, environmental remediation, many more. Hence, effective designed approach to incorporate various properties pivotal manipulate COFs.In this Account, we summarize our recent contributions design synthesis COFs, focusing how develop functions within enhance applications. We highlight principles tailor-made through compositional tuning, synthetic structural modulations, topological diversification. By integrating functions, have developed including charged, optoelectronic tunable, radical, switch COFs. In particular, groups integrated via either bottom-up or postsynthetic approaches. On other hand, high-quality improved crystallinity, porosity, diverse forms, robustness, enriched been achieved. Specifically, elegant strategies stability elaborated. Additionally, adjusting creates architectures high areas host–guest confinement interactions. From proposed strategies, resulted capacities, excellent separation capabilities, efficient storage, prominent catalytic activities, sensitive molecular sensing capture abilities. More importantly, enhanced thermal stabilities were produced. particularly important involving harsh conditions, such as pressure temperature, where material integrity crucial.At end, key challenges future perspectives development characterizations, put forward elevate application propose lies continuous exploration new blocks advanced techniques will allow creation unprecedented properties. believe Account inspire innovative research inclusion interdisciplinary areas.

Language: Английский

Citations

6
Nitrogen-containing linkage-bonds in covalent organic frameworks: Synthesis and applications DOI

Liying Ou,

Zhenluan Xue,

Бо Лі

et al.

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: unknown, P. 110294 - 110294

Published: July 1, 2024

Language: Английский

Citations

5
Chiral Ligand‐Decorated Rhodium Nanoparticles Incorporated in Covalent Organic Framework for Asymmetric Catalysis DOI Open Access
Jiangtao Yu, Ge Yang, Ming‐Liang Gao

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(46)

Published: Aug. 5, 2024

Abstract While metal nanoparticles (NPs) have demonstrated their great potential in catalysis, introducing chiral microenvironment around NPs to achieve efficient conversion and high enantioselectivity remains a long‐standing challenge. In this work, tiny Rh NPs, modified by diene ligands (Lx) bearing diverse functional groups, are incorporated into covalent organic framework (COF) for the asymmetric 1,4‐addition reactions between arylboronic acids nitroalkenes. Though hosted COF inactive, decorating with Lx creates active Rh−Lx interface induces activity. Moreover, modulation altering groups on greatly optimizes (up 95.6 % ee). Mechanistic investigations indicate that formation of hydrogen‐bonding interaction nitroalkenes plays critical roles resulting enantioselectivity. This work highlights significance ligand decoration heterogeneous catalysis.

Language: Английский

Citations

5
Covalent organic Frameworks: Multifunctional material in analytical chemistry DOI

Fangling Wang,

Wei Chen, Shuang Miao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154915 - 154915

Published: Aug. 17, 2024

Language: Английский

Citations

5
Rapid extraction of trace benzene by a crown-ether-based metal-organic framework DOI Creative Commons

Zhonghang Chen,

Peiyu Fang, Jiangnan Li

et al.

National Science Review, Journal Year: 2024, Volume and Issue: 11(12)

Published: Oct. 3, 2024

ABSTRACT Due to almost identical boiling points of benzene and cyclohexane, the extraction trace from cyclohexane is currently performed via energy-intensive extractive distillation method. Their adsorptive separation by porous materials hampered their similar dimensions. Metal-organic frameworks (MOFs) with versatile pore environments are capable molecular discrimination, but substrates in liquid-phase remains extremely challenging. Herein, we report a robust MOF (NKU-300) triangular channels decorated crown ether that can discriminate exhibiting an unprecedented selectivity 8615(10) for mixture benzene/cyclohexane (v/v = 1/1000). Remarkably, NKU-300 demonstrates exceptional selectivities over wide range concentrations 0.1%–50% ultrafast sorption kinetics excellent stability. Single-crystal X-ray diffraction computational modelling reveal multiple supramolecular interactions cooperatively immobilise molecules channel, enabling superior performance. This study will promote application advanced sorbents tailored binding sites challenging industrial separations.

Language: Английский

Citations

5