Preparation-Dependent Photocatalytic Hydrogen Evolution by Organic Semiconducting Nanoparticles DOI
Zi Goh, Andrew Dolan, Jessica M. de la Perrelle

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 25544 - 25555

Published: Nov. 7, 2024

The molecular packing, intermixing, and crystallinity of organic semiconductors are crucial in determining the performance photovoltaic photocatalytic systems. effects these factors on have been thoroughly investigated for thin-film systems, but not nanoparticulate as control packing has limited is challenging Here, we investigate how miniemulsion (ME), reprecipitation (RP), a cold RP method affect and, turn, nanoparticles (NPs), using nonfullerene acceptor Y6 alongside conjugated polymer donors P3HT PIDT-T8BT. RP-based neat NPs exhibit increased relative to ME-based due greater exciton dissociation. produce hydrogen at rate 8 mmol g–1 h–1, which similar other previously studied high-performing catalysts, without need donor material. P3HT:Y6 low performance, likely high miscibility well mobility holes domains. In contrast, PIDT-T8BT:Y6 significant rates evolution. outperform ME higher degree intermixing. This work highlights carefully consider NP preparation when preparing systems its extensive effect material morphology performance.

Language: Английский

A Platinum Complex‐Based Dimerized Electron Acceptor for Efficient Organic Solar Cells DOI Open Access
Cheng Yang, Dongcheng Jiang, Chengyi Xiao

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Abstract Metal–organic complexes have demonstrated excellent performance in organic light‐emitting diodes, yet their potential solar cells (OSCs) remains underexplored. In this study, a novel metal–organic complex, Pt‐Y, which features platinum core connected to Y‐acceptor arms, for application OSCs is designed and synthesized. The dimerized Pt‐Y acceptor prepared through straightforward reactions, with the key precursor linking metal Y‐acceptors synthesized Sonogashira coupling. Steady‐state transient photoluminescence measurements revealed that exhibits distinct singlet triplet states microsecond lifetimes—significantly longer than nanosecond lifetimes of without metal. Incorporating as third component ternary has resulted remarkable efficiency 19.2%. Further morphological analysis absorption indicate displays miscibility Y‐acceptor, leading minimal phase separation formation fibrillar structures. These structures enhance charge transport while reducing recombination. This work presents facile approach developing exceptional photovoltaic OSCs.

Language: Английский

Citations

0
Boosted Hydrogen Evolution via Photoinduced Hole Transfer in Molecular‐Level Organic Heterojunction under NIR Photon Excitation DOI
Yunzhi Wang, Partha Maity, Zhongwei Liu

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

The energy of sunlight is predominantly concentrated in near-infrared (NIR) region, posing a paramount limitation for practical application conventional photocatalysts. Organic semiconductors can offer NIR absorption and tunable levels simultaneously through molecular engineering, which presents great potential solar-driven catalysis. However, an individual organic semiconductor typically generates Frenkel excitons with large binding energy, hindering efficient electron-hole separation. Herein, we develop molecular-level heterojunction to suppress recombination, thereby achieving boosted hydrogen (H2) evolution reaction rate 25.54 µmol h-1 (12.77 mmol g-1) under visible-near-infrared (Vis-NIR) light. Surprisingly, nanoparticles (NPs) comprising donor polymer PBDB-T matched A-D1-D2-D1-A type acceptor BTPT-IC4F exhibit promising external quantum efficiency 6.3% at 730 nm. Transient spectroscopy monitors effective extraction photogenerated holes from the highest occupied orbital (HOMO) HOMO PBDB-T, while first-principle calculations confirm prolonged lifetime excited due hole capture by phase. outstanding performance NPs light ascribed strong transfer within nanoparticle. This study provides valuable insights designing photocatalysts toward light-driven H2 other reactions.

Language: Английский

Citations

0
High-Performance Organic Thin-Film Phototransistors Based on Stacked p-n Heterojunctions for Enhanced Optoelectronic Response DOI

Po-Hsiang Fang,

Zhao-Lun Kuo,

Yutong Wu

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 13(5), P. 2210 - 2218

Published: Nov. 28, 2024

We designed a tandem heterojunction with p- and n-type semiconductors to enhance exciton dissociation transport, offering potential for optoelectronic advancements.

Language: Английский

Citations

1
Carbon-based binary organic photocatalysts for rapid dye degradation under weak light: performance and mechanistic study DOI
Ciyuan Huang,

Shasha Shi,

Songlin Cai

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(33), P. 12752 - 12762

Published: Jan. 1, 2024

Congo red (CR), a stable benzidine diazo dye due to its azo bonds, resists natural photodegradation and poses significant ecological threat.

Language: Английский

Citations

1
Synthesis of hydrothermal carbonation carbon with tunable photocatalytic performance for trimethoprim degradation using an ethanol-water co-solvent strategy: Influence of ethanol concentration DOI

Jiashuai Hu,

Jie Chen,

Xiaoling Liu

et al.

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 478, P. 143941 - 143941

Published: Oct. 10, 2024

Language: Английский

Citations

1
Photocatalytic Hydrogen Generation in Surfactant‐Free, Aqueous Organic Nanoparticle Dispersions DOI Creative Commons
Jan M. Bruder, Karen Fischer,

Jonas Armleder

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 2, 2024

Abstract Hydrogen generation in electrostatically stabilized, aqueous organic nanoparticle dispersions is investigated. For this purpose, are synthesized water by nanoprecipitation from tetrahydrofuran and stabilized charging through strong molecular electron acceptors. The stable for more than 10 weeks on the shelf during photocatalytic process, despite continuous transfer of charges between reactants. hydrogen outperforms which contain common stabilizer sodium dodecyl sulfate.

Language: Английский

Citations

0
Conjugated polymers as photocatalysts for hydrogen therapy DOI Creative Commons

Feixue Mi,

Ningjing Zhao,

Lingyue Jin

et al.

BMEMat, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Abstract Hydrogen as a therapeutic agent has attracted great deal of attention because its superior outcome on many diseases, including inflammatory injury, tumors, metabolic disorders, and neurological diseases. Photocatalytic hydrogen evolution emerged promising strategy for production delivery. This review article presents the recent developments in design synthesis conjugated polymer materials, linear polymers crosslinked photocatalytic evolution. Particularly, we focus this development photocatalysts resulting therapy fields anti‐inflammatory, free radical scavenging, cancer treatment. Finally, discusses future research perspective materials potential clinical applications agent.

Language: Английский

Citations

0
Preparation-Dependent Photocatalytic Hydrogen Evolution by Organic Semiconducting Nanoparticles DOI
Zi Goh, Andrew Dolan, Jessica M. de la Perrelle

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 25544 - 25555

Published: Nov. 7, 2024

The molecular packing, intermixing, and crystallinity of organic semiconductors are crucial in determining the performance photovoltaic photocatalytic systems. effects these factors on have been thoroughly investigated for thin-film systems, but not nanoparticulate as control packing has limited is challenging Here, we investigate how miniemulsion (ME), reprecipitation (RP), a cold RP method affect and, turn, nanoparticles (NPs), using nonfullerene acceptor Y6 alongside conjugated polymer donors P3HT PIDT-T8BT. RP-based neat NPs exhibit increased relative to ME-based due greater exciton dissociation. produce hydrogen at rate 8 mmol g–1 h–1, which similar other previously studied high-performing catalysts, without need donor material. P3HT:Y6 low performance, likely high miscibility well mobility holes domains. In contrast, PIDT-T8BT:Y6 significant rates evolution. outperform ME higher degree intermixing. This work highlights carefully consider NP preparation when preparing systems its extensive effect material morphology performance.

Language: Английский

Citations

0