ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown
Опубликована: Сен. 17, 2024
Toward visible light photocatalysis, covalent organic frameworks (COFs) have recently garnered growing attention. The effect of different orientations imine imine-linked COFs on photocatalysis should be elucidated. Here, two are developed with 2,5-diphenylthieno[3,2-
Язык: Английский
Chemical Society Reviews, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
Covalent organic frameworks (COFs) have gained considerable attention due to their design possibilities as the molecular building blocks that can stack in an atomically precise spatial arrangement.
Язык: Английский
Процитировано
22
Carbon Capture Science & Technology, Год журнала: 2025, Номер unknown, С. 100365 - 100365
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
5
Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 115695 - 115695
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
1
Nano Letters, Год журнала: 2024, Номер 24(43), С. 13708 - 13717
Опубликована: Окт. 17, 2024
Reactive oxygen species (ROS)-responsive drug delivery systems possess immense potential for targeted and controlled release of therapeutics. However, the rapid responsiveness to ROS sustained antibacterial drugs are often limited by challenging microenvironment periodontitis. Integrating ROS-responsive with photocatalytic technologies presents a strategic approach overcome these limitations. Herein, pillararene-embedded covalent organic framework (PCOF) incorporating prodrug thioacetal (TA) has been developed treat This drug-loaded nanoplatform, namely TA-loaded PCOF, utilizes self-amplifying property enhance therapeutic efficacy. PCOFs demonstrate exceptional photosensitivity generation capabilities when employed as carriers. When exposed ROS, TA within nanoplatform was activated cleaved into cinnamaldehyde (CA), highly potent compound. By leveraging visible light activate site-specific infection targeting, PCOF effectively alleviated periodontitis, thereby advancing field systems.
Язык: Английский
Процитировано
7
Chemical Synthesis, Год журнала: 2025, Номер 5(1)
Опубликована: Янв. 8, 2025
The conversion performance for electrocatalytic CO2 reduction reaction (CO2RR) relies on the affinity of molecules. Ionic covalent organic frameworks (COFs) are promising platforms CO2RR due to accessible catalytic sites in skeleton, high combination ability and electronic conductivity. However, most ionic COFs constructed via pre-functionalization monomers or post-modification encountering incomplete loading uneven distribution active sites. In this work, a cationic porphyrin-based COF using (3-carboxypropyl)trimethylammonium Co-porphyrin units is developed through sub-stoichiometric bottom-up synthesis method fine-tune pore environment modulating binding CO2. Compared base COFs, exhibit improved conductivity, adsorption uptakes enhanced reducibility, further improving performance. Notably, achieves CO selectivity 93% partial current density 24.6 mA·cm-2. This work not only offers considerable insights groups but also provides stoichiometry modulate environment.
Язык: Английский
Процитировано
0
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 29, 2025
Abstract Growing global concerns over energy security and climate change have intensified efforts to develop sustainable strategies for electrochemical CO 2 reduction (eCO RR). Covalent Organic Frameworks (COFs) emerged as promising electrocatalysts eCO RR due their tunable structures, high surface areas, abundance of active sites. However, the performance 2D COFs is often limited by layer stacking, which restricts site exposure reduces selectivity. To overcome these challenges, a new class known pillar‐layered (PL‐COFs) developed featuring adjustable interlayer spacing 3D architecture. Characterization using PXRD, TEM, XPS, EIS confirmed successful integration pillar molecules, leads increased spacing, crystallinity, porosity. These structural advancements result in significantly improved activity selectivity ‐to‐CO conversion. Density functional theory simulations revealed that enhanced adsorption desorption contribute outstanding PL‐COF‐1, boasts largest spacing. This material achieved an impressive Faradaic efficiency 91.3% demonstrated significant current density, outperforming both original COF‐366‐Co PL‐COF‐2. findings highlight effectiveness pillaring strategy optimizing COF‐based electrocatalysts, paving way next‐generation materials
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Фев. 5, 2025
Abstract Ionic vinylene‐linked covalent organic frameworks (ivCOFs) with ionic characteristics and highly conjugated structures have been promising functional materials. However, both the number of reported COFs its synthetic methodologies still be limited. Herein, two new kinds (named as COF‐NUC‐1 COF‐NUC‐2) are synthesized by novel geomimetic interfacial hydrothermal synthesis for first time. Due to insolubility aldehyde monomers in water, a molecule/water interface is created, where water‐soluble N‐ethyl‐2,4,6‐trimethylpyridinium bromide (ETMP‐Br) can react via interface‐confined Knoevenagel condensation reaction. The resultant show high crystallinity, chemical stability, hydrophilic nature. Benefiting from electron‐withdrawing redox properties pyridinium salts, as‐fabricated memristor based on film shows stable nonvolatile memory effects, featuring ON/OFF current ratio 0.66 × 10 3 small switch‐on voltage −0.68 V. This work expands realm ivCOFs deepens understanding synthesis.
Язык: Английский
Процитировано
0
Journal of Colloid and Interface Science, Год журнала: 2025, Номер 686, С. 978 - 989
Опубликована: Фев. 7, 2025
Язык: Английский
Процитировано
0
Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown
Опубликована: Фев. 9, 2025
Photo/electro-catalytic CO2 reduction into high-value products are promising strategies for addressing both environmental problems and energy crisis. Duo to their advantageous visible light absorption ability, adjustable optic/electronic properties, definite active center, post-modification capability, excellent stability, porphyrin-based covalent organic frameworks (COFs) have emerged as attractive photo/electro-catalysts towards reduction. In this review, the research progress of COFs photo/electro-catalytic is summarized including design principles, catalytic performance, reaction mechanism. addition, review also presents some challenges prospects application in reduction, laying base fundamental efforts.
Язык: Английский
Процитировано
0
Angewandte Chemie, Год журнала: 2025, Номер unknown
Опубликована: Фев. 9, 2025
Abstract Photo/electro‐catalytic CO 2 reduction into high‐value products are promising strategies for addressing both environmental problems and energy crisis. Duo to their advantageous visible light absorption ability, adjustable optic/electronic properties, definite active center, post‐modification capability, excellent stability, porphyrin‐based covalent organic frameworks (COFs) have emerged as attractive photo/electro‐catalysts towards reduction. In this review, the research progress of COFs photo/electro‐catalytic is summarized including design principles, catalytic performance, reaction mechanism. addition, review also presents some challenges prospects application in reduction, laying base fundamental efforts.
Язык: Английский
Процитировано
0