Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 17, 2024
The multifarious aromatic sulfone-decorated conjugated polymers (CPs) have recently been developed to enable them be employed in artificial photocatalysis with encouraging achievements.
Language: Английский
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154107 - 154107
Published: July 18, 2024
Language: Английский
Citations
9
Macromolecules, Journal Year: 2024, Volume and Issue: 57(15), P. 7208 - 7218
Published: Aug. 1, 2024
π-Conjugated polymers (CPs) bearing alternating electron donor–acceptor (D–A) blocks have been widely exploited as promising photocatalysts for hydrogen production. However, little attention has paid to the D–A ternary polymer photocatalysts, and current investigations on such a system are mainly focused D−π–A type by inserting π-bridge between D A units. Herein, new of polymeric namely poly(DA-ran-Dπ), were designed facilely constructed via atom-economical direct C–H arylation polymerization (DArP), in which benzothiophene-5,5-dioxide (DBTSO2), 3,4-ethylenedioxythiophene (EDOT), phenyl serve acceptor, donor, π-spacer, respectively. Our findings reveal that DBTSO2, EDOT, building can exert synergic effects promoting hydrophilicity, interactions, charge separation resulting CPs. Compared binary EDBz-0, EDBz-25 exhibits much superior photocatalytic performance, yielding evolution rate up 241.5 mmol g–1 h–1 with an unprecedented apparent quantum yield 28.62% at 500 nm wavelength without aid Pt cocatalyst. The water-displacing setup reveals 91 mL H2 gas be quickly produced within 2 h using only 3 mg photocatalyst. construction CPs DArP, developed work, offers opportunity design green synthesis semiconductors renewable energy applications.
Language: Английский
Citations
5
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 9, 2025
Abstract 2D single‐crystal perovskites have attracted interest due to their excellent photoelectric properties and improved moisture stability, making them promising for various optoelectronic applications. However, challenges remain, particularly low carrier collection efficiency caused by high exciton binding energy. This study introduces self‐powered heterojunction photodetectors (PDs) based on (PEA) 2 PbI 4 /ZnPc, enhancing conduction the configuration of lateral electrodes regulating carrier/exciton dynamics via design. The PD achieves an impressive detectivity 1.14 × 10 16 Jones, a 770% increase compared control, with detection limit reaching black‐light level 3 pW cm −2 under 532 nm at 1 V bias. performance surpasses all previously reported perovskite PDs is attributed suppressed dark current increased photocurrent. built‐in electric field counteracts part forward bias, reducing intrinsic motion in dark. It also effectively dissociates photogenerated excitons, minimizing radiative recombination illumination. allows device detect weak light self‐driven mode. Additionally, extends detectable wavelength 980 nm. has been successfully applied acousto‐optic conversion communication, highlighting its potential low‐power, energy‐efficient optical communication solutions.
Language: Английский
Citations
0
Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown
Published: March 11, 2025
Abstract The arrangement of donor–acceptor (D–A) components in order at a molecular level provides means to achieve efficient electron‐hole separation for promoting the activity photocatalysts. Herein, we report coordination assembly D–A molecules with desired staggered energy levels two isostructural metal‐organic frameworks (MOFs) 1 and 2 , which exhibit high photocatalytic hydrogen evolution without using any cocatalysts photosensitizers. modulation active metal sites MOFs leads an increase rates from 1260 3218 µmol h −1 g . A detailed mechanism study revealed that bond defined by assisted centers is key efficiently generating photogenerated charge carriers, has appropriate affinity proton reduce barrier evolution. Besides, enhanced transport kinetics based on arrayed free carboxyl groups hydrogen‐bonded network endows higher conductivity than thus usage rate reaction kinetics.
Language: Английский
Citations
0
Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown
Published: March 11, 2025
Abstract The arrangement of donor–acceptor (D–A) components in order at a molecular level provides means to achieve efficient electron‐hole separation for promoting the activity photocatalysts. Herein, we report coordination assembly D–A molecules with desired staggered energy levels two isostructural metal‐organic frameworks (MOFs) 1 and 2 , which exhibit high photocatalytic hydrogen evolution without using any cocatalysts photosensitizers. modulation active metal sites MOFs leads an increase rates from 1260 3218 µmol h −1 g . A detailed mechanism study revealed that bond defined by assisted centers is key efficiently generating photogenerated charge carriers, has appropriate affinity proton reduce barrier evolution. Besides, enhanced transport kinetics based on arrayed free carboxyl groups hydrogen‐bonded network endows higher conductivity than thus usage rate reaction kinetics.
Language: Английский
Citations
0
Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Conjugated porous polymers (CPPs) with a donor–acceptor (D–A) molecular structure usually exhibit good photocatalytic hydrogen evolution (PHE).
Language: Английский
Citations
0
Fuel, Journal Year: 2024, Volume and Issue: 366, P. 131415 - 131415
Published: March 7, 2024
Language: Английский
Citations
3
International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 79, P. 492 - 502
Published: July 8, 2024
Recent progress in conjugated polymer photocatalysts has opened avenues for enhancing photocatalytic hydrogen production (PHP) activity through structural design. This study highlights the impact of acceptor-to-donor feed ratio on PHP copolymers, influencing their energy level structures. Five porous polymers (CPPs) were synthesized by adjusting molar ratio. Notably, at a 2:1 ratio, demonstrated high evolution rate (HER) 61.9 mmol g−1 h−1 under full arc irradiation without co-catalysts and an apparent quantum yield (AQY) 7.77% 475 nm. However, further increasing proportion donor unit copolymers decreases HER. Experiments theoretical simulation characterized that ratios effectively tune polymer's molecular structure, hydrophilicity, band gap, generation transport efficiency photo-induced charge carriers, ultimately affecting kinetics efficiency. research demonstrates tuning structure chemical compositions CPPs statistical copolymerization significantly impacts activity.
Language: Английский
Citations
3
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 669, P. 393 - 401
Published: May 1, 2024
Language: Английский
Citations
2
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150813 - 150813
Published: March 29, 2024
Language: Английский
Citations
1