Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 6, 2024
A linear conjugated organic polymer based on PDI was designed for directional charge transfer, it exhibits efficient separation that move along the chain direction. The above properties enable water oxidation O 2 production by PT-CB.
Language: Английский
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160561 - 160561
Published: Feb. 1, 2025
Language: Английский
Citations
3
Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125071 - 125071
Published: Jan. 1, 2025
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 13, 2025
Abstract Developing organic semiconductor photocatalysts with alterable optical properties and excitonic behaviors for photocatalytic hydrogen evolution has received significant attention recently. Herein, three polymerized small‐molecule acceptors (PSMAs) different linker lengths, namely PY‐1T, PY‐2T PY‐3T, are designed synthesized to construct nano‐photocatalysts. In comparison YDT, these PSMAs exhibit broader absorption in both visible near‐infrared (NIR) light region as well enlarged exciton diffusion length. the meanwhile, intramolecular charge transfer separation is promoted by varying length, leading enhanced harvesting utilization. As a result, single‐component nano‐photocatalyst based on PY‐3T achieves an impressive average rate (HER) of 400.3 mmol h −1 g under AM 1.5G sunlight (100 mW cm −2 ), which ≈48 times greater than that YDT NPs (8.3 ). These results not only prove potential developing extended chain length efficient photocatalysts, but also elucidate importance regulating designing high‐performance photocatalysts.
Language: Английский
Citations
0
The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 28, 2025
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 20, 2025
Abstract Covalent organic frameworks (COFs) are emerging as a transformative platform for photocatalytic hydrogen peroxide (H 2 O ) production due to their highly ordered structures, intrinsic porosity, and molecular tunability. Despite potential, the inefficient utilization of photogenerated charge carriers in COFs significantly restrains efficiency. This study presents two regioisomeric COFs, α ‐TT‐TDAN COF β COF, both incorporating thieno[3,2‐b]thiophene moieties, investigate influence regioisomerism on excited electron distribution its impact performance. The demonstrates remarkable solar‐to‐chemical conversion efficiency 1.35%, outperforming ‐isomeric counterpart, which is merely 0.44%. Comprehensive spectroscopic computational investigations reveal critical role subtle substitution change electronic properties. structural adjustment intricately connects structure dynamics, enabling precise regulation distribution, efficient separation transport, localization electrons at active sites. Moreover, this finely tuned interplay enhances oxygen reduction reaction. These findings establish new paradigm design, offering molecular‐level strategy advance reticular materials toward energy conversion.
Language: Английский
Citations
0
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 25, 2024
Abstract Hybrid lead halides show significant potential in photocatalysis due to their excellent photophysical properties, but the atomically precise modification of organic component achieve synergistic interactions with halide units remains a great challenge. Herein, for first time, we have employed crystal engineering strategy construct class single‐atom‐substituted hybrid electron donor‐acceptor (D‐A) effect. The frameworks consist 1D linear [PbCl] + chains as inorganic building and benzoxadiazole/benzothiadiazole/ benzoselenadiazole‐funtionalized dicarboxylates linkers. covalent bonding between ligands electron−withdrawing groups electron‐rich not only facilitate charge separation, also enhance structural robustness that is critical photocatalysis. D‐A structured serve highly efficient heterogeneous photooxidation catalysts, including aerobic oxidation C(sp 3 )−H bonds, oxidative coupling primary amines, phenylboronic acids selective sulfides are demonstrated 30 examples. Importantly, these reactions able be driven by natural sunlight ambient air afford quantitative yields. Moreover, our photocatalysts successful fix into photocatalytic flow system, which enables flow‐type synthesis high value‐added products on gram scale.
Language: Английский
Citations
2
Materials Today Energy, Journal Year: 2024, Volume and Issue: unknown, P. 101750 - 101750
Published: Nov. 1, 2024
Language: Английский
Citations
2
International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 80, P. 115 - 124
Published: July 14, 2024
Language: Английский
Citations
0
Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 25, 2024
Abstract Hybrid lead halides show significant potential in photocatalysis due to their excellent photophysical properties, but the atomically precise modification of organic component achieve synergistic interactions with halide units remains a great challenge. Herein, for first time, we have employed crystal engineering strategy construct class single‐atom‐substituted hybrid electron donor‐acceptor (D‐A) effect. The frameworks consist 1D linear [PbCl] + chains as inorganic building and benzoxadiazole/benzothiadiazole/ benzoselenadiazole‐funtionalized dicarboxylates linkers. covalent bonding between ligands electron−withdrawing groups electron‐rich not only facilitate charge separation, also enhance structural robustness that is critical photocatalysis. D‐A structured serve highly efficient heterogeneous photooxidation catalysts, including aerobic oxidation C(sp 3 )−H bonds, oxidative coupling primary amines, phenylboronic acids selective sulfides are demonstrated 30 examples. Importantly, these reactions able be driven by natural sunlight ambient air afford quantitative yields. Moreover, our photocatalysts successful fix into photocatalytic flow system, which enables flow‐type synthesis high value‐added products on gram scale.
Language: Английский
Citations
0
ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 5, 2024
Metal-free polymeric photocatalysts with tunable building blocks, ample redox-active centers, and exceptional light-harvesting capability have emerged as promising candidates for generating hydrogen peroxide (H2O2) through the oxygen reduction reaction (ORR) water oxidation (WOR). The slow kinetics of WOR process coupled rapid charge recombination nevertheless impedes efficient generation H2O2. Herein, a thiophene functionalized linear conjugated polymer (DEB-Tp-S2) was fabricated effective overall H2O2 photoproduction. DEB-Tp-S2 exhibits high initial photocatalytic yield rate 2762 μmol g–1 h–1 in absence sacrificial additives possesses outstanding cycling stability. Experimental density functional theory (DFT) results exhibit that moieties can reduce strength O–H bond H2O, which promotes 4e– process, thereby suppressing improving proton supply. This work reveals indispensable role chemical structure engineering optimizing their offers fresh insights into design achieving production.
Language: Английский
Citations
0