Nature Chemistry, Journal Year: 2023, Volume and Issue: 16(1), P. 114 - 121
Published: Sept. 18, 2023
Language: Английский
Nature Reviews Methods Primers, Journal Year: 2023, Volume and Issue: 3(1)
Published: Jan. 12, 2023
Language: Английский
Citations
385
Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(45), P. 23946 - 23974
Published: March 30, 2021
At its core, reticular chemistry has translated the precision and expertise of organic inorganic synthesis to solid state. While initial excitement over metal-organic frameworks (MOFs) covalent (COFs) was undoubtedly fueled by their unprecedented porosity surface areas, most profound scientific innovation field been elaboration design strategies for extended crystalline solids through strong directional bonds. In this contribution we highlight different classes materials that have developed, how these can be functionalized, complexity introduced into backbones. Finally, show structural control is being from molecular scale crystal morphology shape on nanoscale, all way shaping bulk scale.
Language: Английский
Citations
310
Matter, Journal Year: 2021, Volume and Issue: 4(7), P. 2230 - 2265
Published: July 1, 2021
Language: Английский
Citations
262
Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)
Published: May 29, 2023
The strong excitonic effects widely exist in polymer-semiconductors and the large exciton binding energy (Eb) seriously limits their photocatalysis. Herein, density functional theory (DFT) calculations are conducted to assess band alignment charge transfer feature of potential donor-acceptor (D-A) covalent organic frameworks (COFs), using 1,3,5-tris(4-aminophenyl)triazine (TAPT) or 1,3,5-tris(4-aminophenyl)benzene (TAPB) as acceptors tereph-thaldehydes functionalized diverse groups donors. Given discernable D-A interaction strengths pairs, Eb can be systematically regulated with minimum TAPT-OMe. Guided by these results, corresponding COFs synthesized, where TAPT-OMe-COF possesses best activity photocatalytic H2 production trend other is associated that calculated for pairs. In addition, further alkyne cycloaddition imine linkage greatly improves stability resulting TAPT-OMe-alkyne-COF a substantially smaller exhibits ~20 times higher than parent COF.
Language: Английский
Citations
212
Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(12), P. 5643 - 5652
Published: March 21, 2022
Developing cost-/energy-efficient separation techniques for purifying ethylene from an ethylene/ethane mixture is highly important but very challenging in the industrial process. Herein, using a bottom-up [8 + 2] construction approach, we rationally designed and synthesized three three-dimensional covalent organic frameworks (COFs) with 8-connected bcu networks, which can selectively remove ethane high efficiency. These COF materials, are fabricated by condensation reaction of customer-designed octatopic aldehyde monomer linear diamino linkers, possess crystallinity, good structural robustness, porosity. Attributed to well-organized micro-sized pores nonpolar/inert pore environment, these COFs display adsorption capacity selectivity over ethylene, making them among best ethane-selective adsorbents purification. Their excellent performance validated dynamic breakthrough experiments high-purity (>99.99%) produced through single The surpasses all reported C2H6-selective even some benchmark metal-organic frameworks. This work provides guidance design new value-added gas
Language: Английский
Citations
208
Nature Reviews Chemistry, Journal Year: 2022, Volume and Issue: 6(12), P. 881 - 898
Published: Nov. 11, 2022
Language: Английский
Citations
194
Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(26), P. 11482 - 11498
Published: June 27, 2022
The practical utilization of covalent organic frameworks (COFs) with manipulation at the atomic and molecular scale often demands their assembly on nano-, meso-, macroscale precise control. Consequently, synthetic approaches that establish ability to control nucleation growth COF crystallites self-assembly desired nanomorphologies have drawn substantial attention from researchers. On basis dimensionality morphologies, we can categorize them into zero- (0-D), one- (1-D), two- (2-D), three-dimensional (3-D) nanomorphologies. In this perspective, summarize reported strategies enable nanomorphologies' size, shape, reveal impact dimensionalities in physicochemical properties applications. aim is a synergistic optimization morphological while keeping micro- or mesoporosity, crystallinity, chemical functionalities COFs perspective. A detailed knowledge along way should help us enrich performance variety applications like catalysis, separation, sensing, drug delivery, energy storage, etc. We discussed interlinking between via transmutation dimensionalities. Such could lead variation during transition. Finally, concept constructing superstructures through combination two more has been explored, it bring up opportunities for developing next-generation innovative materials multidisciplinary
Language: Английский
Citations
188
ACS Nano, Journal Year: 2023, Volume and Issue: 17(3), P. 1879 - 1905
Published: Jan. 30, 2023
Covalent organic frameworks (COFs) are a type of crystalline porous material with specific features and interesting structures, including porosity, large surface area, biocompatibility. These enable COFs to be considered as excellent candidates for applications in various fields. Recently, have been widely demonstrated promising materials biomedical because their physicochemical properties ultrathin structures. In this review, we cover the recent progress COF photodynamic therapy, gene delivery, photothermal drug bioimaging, biosensing, combined therapies. Moreover, critical challenges further perspectives regards future biology-facing also discussed.
Language: Английский
Citations
179
Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(11), P. 6057 - 6066
Published: March 8, 2023
The development of efficient photocatalysts for N2 fixation to produce NH3 under ambient conditions remains a great challenge. Since covalent organic frameworks (COFs) possess predesignable chemical structures, good crystallinity, and high porosity, it is highly significant explore their potential photocatalytic nitrogen conversion. Herein, we report series isostructural porphyrin-based COFs loaded with Au single atoms (COFX-Au, X = 1-5) fixation. porphyrin building blocks act as the docking sites immobilize well light-harvesting antennae. microenvironment catalytic center precisely tuned by controlling functional groups at proximal distal positions units. As result, COF1-Au decorated strong electron-withdrawing exhibits activity toward production rates 333.0 ± 22.4 μmol g-1 h-1 37.0 2.5 mmol gAu-1 h-1, which are 2.8- 171-fold higher than that COF4-Au electron-donating porphyrin-Au molecular catalyst, respectively. could be further increased 427.9 18.7 61.1 2.7 catalysis COF5-Au featuring two different kinds groups. structure-activity relationship analysis reveals introduction facilitates separation transportation photogenerated electrons within entire framework. This work manifests structures optoelectronic properties COF-based can finely through rational predesign level, thus leading superior evolution.
Language: Английский
Citations
166
Advanced Materials, Journal Year: 2022, Volume and Issue: 34(16)
Published: Feb. 16, 2022
Microsized silicon particles are desirable Si anodes because of their low price and abundant sources. However, it is challenging to achieve stable electrochemical performances using a traditional microsized anode due the poor electrical conductivity, serious volume expansion, unstable solid electrolyte interface. Herein, composite designed synthesized by constructing unique polymer, poly(hexaazatrinaphthalene) (PHATN), at Si/C surface (PCSi). The Li+ transport mechanism PCSi elucidated in situ characterization theoretical simulation. During lithiation anode, CN groups with high electron density PHATN first coordinate form CNLi bonds on both sides molecule plane. Consequently, original benzene rings become active centers accept lithium Li-rich coatings. molecules expand change molecular configuration during consecutive process, which provides controllable space for expansion particles. exhibits specific capacity 1129.6 mAh g-1 after 500 cycles 1 A , compelling rate performance, maintaining 417.9 16.5 .
Language: Английский
Citations
160