Rational design of MoS2@COF hybrid composites promoting C-C coupling for photocatalytic CO2 reduction to ethane

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 325, P. 122393 - 122393

Published: Jan. 9, 2023

Language: Английский

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Naphthalenediimide and perylenediimide based donor-acceptor crystalline hybrid materials: Structures and applications

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 526, P. 216350 - 216350

Published: Nov. 29, 2024

Language: Английский

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Organic Donor‐Acceptor Systems for Photocatalysis

Advanced Science, Journal Year: 2023, Volume and Issue: 11(10)

Published: Dec. 25, 2023

Abstract Organic semiconductor materials are considered to be promising photocatalysts due their excellent light absorption by chromophores, easy molecular structure tuning, and solution‐processable properties. In particular, donor‐acceptor (D‐A) type organic photocatalytic synthesized introducing D A units intra‐ or intermolecularly, have made great progress in studies. More more studies demonstrated that the D‐A combine effective carrier separation, tunable bandgap, sensitive optoelectronic response, an strategy for enhancing absorption, improving exciton dissociation, optimizing transport. This review provides a thorough overview of strategies aimed at performance semiconductors. Initially, essential methods modifying materials, such as interface engineering, crystal interaction modulation, briefly discussed. Subsequently, delves into various based on intramolecular intermolecular interactions, encompassing small molecules, conjugated polymers, crystalline supramolecules, heterojunctions. Meanwhile, energy band structures, dynamics, redox‐active sites under different bonding modes Finally, highlights advanced applications photocatalystsand outlines prospective challenges opportunities.

Language: Английский

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Naphthalenediimide-based photochromic MOFs: Structure visualization upon radical formation, and applications in purple light detection, inkless printing and anti-counterfeiting

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 462, P. 142275 - 142275

Published: March 6, 2023

Language: Английский

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Anthraquinones-based photocatalysis: A comprehensive review

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 22, P. 100449 - 100449

Published: July 5, 2024

In recent years, there has been significant interest in photocatalytic technologies utilizing semiconductors and photosensitizers responsive to solar light, owing their potential for energy environmental applications. Current efforts are focused on enhancing existing photocatalysts developing new ones tailored uses. Anthraquinones (AQs) serve as redox-active electron transfer mediators photochemically active organic photosensitizers, effectively addressing common issues such low light utilization carrier separation efficiency found conventional semiconductors. AQs offer advantages abundant raw materials, controlled preparation, excellent capabilities, photosensitivity, with applications spanning the energy, medical, sectors. Despite utility, comprehensive reviews AQs-based systems contexts lacking. this review, we thoroughly describe photochemical properties of photocatalysis, particularly key challenges like clean production, antibacterial action, pollutant degradation. However, face limitations practical due electrical conductivity solubility-related secondary contamination. To mitigate these issues, design synthesis graphene-immobilized highlighted a solution enhance Additionally, future research directions proposed deepen understanding AQs' theoretical mechanisms provide wastewater treatment. This review aims facilitate mechanistic studies improve technologies.

Language: Английский

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Sequential Modifications of Metal–Organic Layer Nodes for Highly Efficient Photocatalyzed Hydrogen Atom Transfer

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(18), P. 9994 - 10000

Published: May 1, 2023

Herein, we report the synthesis of a bifunctional photocatalyst, Zr-OTf-EY, through sequential modifications metal cluster nodes in metal-organic layer (MOL). With eosin Y and strong Lewis acids on nodes, Zr-OTf-EY catalyzes cross-coupling reactions between various C-H compounds electron-deficient alkenes or azodicarboxylate to afford C-C C-N coupling products, with turnover numbers up 1980. In Zr-OTf-EY-catalyzed reactions, acid sites bind increase their local concentrations electron deficiency for enhanced radical additions, while EY is stabilized by site isolation MOL long-lived catalyst hydrogen atom transfer. The proximity photostable enhances catalytic efficiency approximately 400 times over homogeneous counterpart reactions.

Language: Английский

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Intensifying Photocatalytic Baeyer–Villiger Oxidation of Ketones with the Introduction of Ru Metalloligands and Bimetallic Units in POM@MOF

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(16), P. 7325 - 7333

Published: April 11, 2024

The synthesis of visible light-responsive and efficient photocatalysts toward green Baeyer–Villiger oxidation organic is extraordinary significance. In this work, we have synthesized two examples light responsive crystalline polyoxometalate@metal–organic framework materials Ru-NiMo Ru-CoMo by introducing Ru metalloligands {CdM3O12} bimetallic units (M = Ni or Co). This the first report metalloligand-modified with nodes, form a three-dimensional directly through coordination bonds between metalloligands. particular, can achieve photocatalytic conversion cyclohexanone to ε-caprolactone in yields as high 95.5% under excitation range λ > 400 nm, achieving turnover number frequency 955 440 h–1, respectively, which are best known for oxidation, while apparent quantum yield measured at 485 nm 4.4%. Moreover, exhibited excellent structural stability recyclability, producing 90.8% after five cycles recycling.

Language: Английский

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Site‐Isolated Rhodium(II) Metalloradicals Catalyze Olefin Hydrofunctionalization

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(18)

Published: Feb. 7, 2024

Abstract Rh(II) porphyrin complexes display pronounced metal‐centered radical character and the ability to activate small molecules under mild conditions, but catalysis with porphyrins is extremely rare. In addition facile dimerization, readily engage in kinetically thermodynamically reactions involving two centers generate stable Rh(III)−X intermediates that obstruct turnover thermal catalysis. Here we report site isolation of metalloradicals a MOF host, which not only protects against also allows them participate Access PCN‐224 or PCN‐222 linkers are fully metalated by absence any accompanying Rh(0) nanoparticles was achieved via first direct synthesis linker containing transition‐metal alkyl moiety, followed Rh(III)−C bond photolysis.

Language: Английский

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Solvent-Modulated Self-Assembly of Naphthalenediimide-Based Cd(II) Complexes and the Controllable Photochromism via Conformational Isomerization

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(40), P. 15973 - 15982

Published: Sept. 29, 2022

Rational regulation of the properties photochromic materials is a challenging and meaningful work. In present work, NDI-based complexes, namely, [Cd0.5(NDI)(HBDC)]·H2O (1) series conformational isomers {[Cd(NDI)0.5(BDC)]·MeCN}n (2), were synthesized by varying solvent conditions (H2BDC = terephthalic acid, NDI N,N'-bis(3-pyridylcarbonylhydrazine)-1,4,5,8-naphthalene diimide). Complex 1 exhibits 0D mononuclear structure without behavior due to bad conjugation naphthalene diimide moiety. The complex 2 manifest 3D network, showing ultra-fast photo-induced intermolecular electron transfer under X-ray, UV, visible light. However, they show different rates coloring contrast upon photoirradiation, which originates from their difference in distances lone pair(COO)···π(NDI). This was realized via controlling ratio reaction system. addition, compared UV/X-ray light, greater sensitivity light an organic-inorganic hybrid material with photomodulated luminescence. Based on excellent performance, can be applied filter paper, potential applications as inkless printing medium selective perception ammonia amine vapors solid state visual color changes.

Language: Английский

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Synthesis and Characterization of Zn-Salophen Complexes with Different D–A Distances: An Approach to Tuning the Intersystem-Crossing Process

Inorganics, Journal Year: 2024, Volume and Issue: 12(4), P. 108 - 108

Published: April 8, 2024

A series of novel zinc-salophen (salophen = N, N′-phenylenebis(salicylimine)) complexes (Zn-1–4) with electron donor–acceptor (D–A) structure were synthesized and characterized using a triphenylamine as the donor. Zn-salophen same substituent sites have been reported to exhibit significant CT properties. The design D–A increase in number benzene rings length bridging groups led reduction energy difference between charge separation singlet triplet states, resulting production reactive oxygen species (ROS) under light irradiation. ability has enhanced (in terms (1O2), compared Zn-salophen, Zn-4 is 1.58 times higher). This method enhance intersystem crossing process compounds, thereby enabling them reach triple excited state, but generation ROS not studied. Although enhancement very significant, it expanded medical application prospects these types provided new strategy ROS.

Language: Английский

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