Metalated covalent organic frameworks: from synthetic strategies to diverse applications

Chemical Society Reviews, Год журнала: 2022, Номер 51(15), С. 6307 - 6416

Опубликована: Янв. 1, 2022

This review highlights the recent advances of metalated covalent organic frameworks, including synthetic strategies and applications, discusses current challenges future directions.

Язык: Английский

---

Covalent Organic Frameworks for Energy Conversion in Photocatalysis

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(34)

Опубликована: Апрель 24, 2023

Abstract Intensifying energy crises and severe environmental issues have led to the discovery of renewable sources, sustainable conversion, storage technologies. Photocatalysis is a green technology that converts eco‐friendly solar into high‐energy chemicals. Covalent organic frameworks (COFs) are porous materials constructed by covalent bonds show promising potential for converting chemicals owing their pre‐designable structures, high crystallinity, porosity. Herein, we highlight recent progress in synthesis COF‐based photocatalysts applications water splitting, CO 2 reduction, H O production. The challenges future opportunities rational design COFs advanced discussed. This Review expected promote further development toward photocatalysis.

Язык: Английский

---

Three-Dimensional Covalent Organic Frameworks with Ultra-Large Pores for Highly Efficient Photocatalysis

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(5), С. 3248 - 3254

Опубликована: Янв. 31, 2023

Benefiting from their unique structural merits, three-dimensional (3D) large-pore COF materials demonstrate high surface areas and interconnected large channels, which makes these promising in practical applications. Unfortunately, functionalization strategies application research are still absent structures. To this end, a series of functional 3D stp-topologized COFs designed based on porphyrin or metalloporphyrin moieties, named JUC-640-M (M = Co, Ni, H). Interestingly, JUC-640-H exhibits record-breaking low crystal density (0.106 cm3 g-1) among all crystalline materials, along with the largest pore size (4.6 nm) COFs, area (2204 m2 g-1), abundant exposed moieties (0.845 mmol g-1). Inspired by characteristics photoelectrical performance, JUC-640-Co is utilized for photoreduction CO2 to CO demonstrates production rate (15.1 g-1 h-1), selectivity (94.4%), stability. It should be noted that has exceeded those reported COF-based materials. This work not only produces novel channels but also provides new guidance applications COFs.

Язык: Английский

---

Construction of Covalent Organic Frameworks via Multicomponent Reactions

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(3), С. 1475 - 1496

Опубликована: Янв. 16, 2023

Multicomponent reactions (MCRs) combine at least three reactants to afford the desired product in a highly atom-economic way and are therefore viewed as efficient one-pot combinatorial synthesis tools allowing one significantly boost molecular complexity diversity. Nowadays, MCRs no longer confined organic have found applications materials chemistry. In particular, can be used prepare covalent frameworks (COFs), which crystalline porous assembled from monomers exhibit broad range of properties applications. This synthetic approach retains advantages small-molecule MCRs, not only strengthening skeletal robustness COFs, but also providing additional driving forces for their crystallization, has been series robust COFs with diverse The present perspective article provides general background discusses types employed COF date, addresses related critical challenges future perspectives inspire MCR-based design new promote further progress this emerging field.

Язык: Английский

---

Conjugated Three-Dimensional High-Connected Covalent Organic Frameworks for Lithium–Sulfur Batteries

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(37), С. 17209 - 17218

Опубликована: Сен. 9, 2022

Developing conjugated three-dimensional (3D) covalent organic frameworks (COFs) still remains an extremely difficult task due to the lack of enough 3D building blocks. Herein, condensation between 8-connected pentiptycene-based D2h block (DMOPTP) and 4-connected square-planar linkers affords two COFs (named 3D-scu-COF-1 3D-scu-COF-2). A combination homoaromatic structure former with 2D latter linking units enables π-electron delocalization over whole both COFs, endowing them excellent conductivities 3.2-3.5 × 10-5 S cm-1. In particular, rigid quadrangular prism shape DMOPTP guides formation a twofold interpenetrated scu topology high-connected permanent porosity large Brunauer-Emmett-Teller (BET) surface area 2340 1602 m2 g-1 for 3D-scu-COF-2, respectively, ensuring effective small molecule storage mass transport characteristics. This, in their good charge properties, renders promising sulfur host materials lithium-sulfur batteries (LSBs) high capacities (1035-1155 mA h at 0.2 C, 1 C = 1675 g-1), rate capabilities (713-757 5.0 C), superior cycling stability (71-83% capacity retention 2.0 after 500 cycles), surpassing most LSB cathodes reported thus far.

Язык: Английский

---

Highly Connected Three-Dimensional Covalent Organic Framework with Flu Topology for High-Performance Li-S Batteries

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(14), С. 8141 - 8149

Опубликована: Март 29, 2023

Lithium-sulfur batteries (LSBs) have been considered as a promising candidate for next-generation energy storage devices, which however still suffer from the shuttle effect of intermediate lithium polysulfides (LiPSs). Covalent-organic frameworks (COFs) exhibited great potential sulfur hosts LSBs to solve such problem. Herein, pentiptycene-based D2h symmetrical octatopic polyaldehyde, 6,13-dimethoxy-2,3,9,10,18,19,24,25-octa(4'-formylphenyl)pentiptycene (DMOPTP), was prepared and utilized building block toward preparing COFs. Condensation DMOPTP with 4-connected tetrakis(4-aminophenyl)methane affords an expanded [8 + 4] connected network 3D-flu-COF, flu topology. The non-interpenetrated nature topology endows 3D-flu-COF high Brunauer-Emmett-Teller surface area 2860 m2 g-1, large octahedral cavities, cross-linked tunnels in framework, enabling loading capacity (∼70 wt %), strong LiPS adsorption capability, facile ion diffusion. Remarkably, when used host LSBs, delivers 1249 mA h g-1 at 0.2 C (1.0 = 1675 g-1), outstanding rate capability (764 5.0 C), excellent stability, representing one best results among thus far reported COF-based materials being competitive state-of-the-art inorganic materials.

Язык: Английский

---

Recent advances in metal/covalent organic frameworks based materials: Their synthesis, structure design and potential applications for hydrogen production

Coordination Chemistry Reviews, Год журнала: 2023, Номер 483, С. 215066 - 215066

Опубликована: Март 9, 2023

Язык: Английский

---

Rationally fabricating 3D porphyrinic covalent organic frameworks with scu topology as highly efficient photocatalysts

Chem, Год журнала: 2022, Номер 8(11), С. 3064 - 3080

Опубликована: Авг. 19, 2022

Язык: Английский

---

Three-dimensional covalent organic framework with tty topology for enhanced photocatalytic hydrogen peroxide production

Chemical Engineering Journal, Год журнала: 2022, Номер 454, С. 140121 - 140121

Опубликована: Ноя. 1, 2022

Язык: Английский

---

Recent Progress on Phase Engineering of Nanomaterials

Chemical Reviews, Год журнала: 2023, Номер 123(23), С. 13489 - 13692

Опубликована: Ноя. 14, 2023

As a key structural parameter, phase depicts the arrangement of atoms in materials. Normally, nanomaterial exists its thermodynamically stable crystal phase. With development nanotechnology, nanomaterials with unconventional phases, which rarely exist their bulk counterparts, or amorphous have been prepared using carefully controlled reaction conditions. Together these methods are beginning to enable engineering (PEN), i.e., synthesis phases and transformation between different obtain desired properties functions. This Review summarizes research progress field PEN. First, we present representative strategies for direct modulation diverse kinds nanomaterials. We cover ranging from metal nanostructures such as Au, Ag, Cu, Pd, Ru, alloys; oxides, borides, carbides; transition dichalcogenides (TMDs) 2D layered review growth wet-chemical reduction seed-mediated epitaxial chemical vapor deposition (CVD), high pressure transformation, electron ion-beam irradiation. After that, summarize significant influence on various unconventional-phase also discuss potential applications developed areas including catalysis, electrochemical energy storage (batteries supercapacitors), solar cells, optoelectronics, sensing. Finally, existing challenges future directions

Язык: Английский

---