Pyrene-based porous organic materials for visible light photocatalysis

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 513, P. 215902 - 215902

Published: May 4, 2024

Language: Английский

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Selective heterogeneous photocatalytic activation for toluene oxidation: recent advances, challenges and perspective

Chemical Synthesis, Journal Year: 2025, Volume and Issue: 5(1)

Published: Feb. 8, 2025

The conversion of toluene into high-value products without generating undesired CO2 remains a critical challenge. Selective oxidation under visible light irradiation has emerged as promising solution. This review offers comprehensive interpretation photocatalytic transformations in heterogeneous oxidation. We start by outlining the basic mechanism C–H bond activation and provide an overview reactive oxygen species (ROS) within systems. Subsequently, we summary strategies that have been developed to enhance selectivity system. Following this, advanced characterization techniques density functional theory (DFT) calculations are discussed for understanding structure-performance relationship photocatalysts mechanisms underlying processes. Finally, put forward detailed discussion current challenges potential directions future research, with aim offering valuable insights this emerging field. believe will not only spark greater creativity optimizing but also offer designing other

Language: Английский

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Boosting the Superoxide Anion Radical Generation of Triphenylamine- and Benzothiadiazole-based Supramolecular Organic Framework for Improving Photocatalytic Performance

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

The construction of three-component supramolecular organic frameworks (SOFs) remains a challenge in this field due to the complex noncovalent interactions involved and limitations existing preparation methods. In study, we designed synthesized two photosensitive modules, with naphthalene-modified triphenylamine derivative (NA-TPA) as donor unit methylated-viologen-modified benzothiadiazole (DPBT) acceptor unit, which can self-assemble into two-dimensional framework (SOF) through encapsulation-enhanced donor–acceptor interaction cucurbit[8]uril (CB[8]) water. SOF not only nanosheet morphology water but also exhibit excellent luminescence enhancement performance. Compared monomers NA-TPA DPBT, effectively promote electron transfer greatly improve ability produce superoxide anion radicals (O2•–), be used photocatalyze thiol–ene cross-coupling reaction yield up 90%. This work provides useful exploration for SOFs photocatalytic application.

Language: Английский

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Study of pyrene-based covalent organic frameworks for efficient photocatalytic oxidation of low-concentration NO

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113470 - 113470

Published: July 1, 2024

This research presents the development of innovative pyrene-based COFs aimed at enhancing photocatalytic oxidation low-concentration nitrogen oxide. By precisely modifying structural length and incorporating additional functional groups into COFs, we identified TAPPy-DMTP-COF as most effective performer. COF, characterized by its shortest presence -OCH3 groups, demonstrated superior performance, likely due to reduced electron transfer resistance oxygen active sites. Building on potential TAPPy-DMTP-COF, developed a covalently linked Type-II heterostructure with g-C3N4. The resulting heterostructure, 40TAPPy-DMTP-COF/g-C3N4, 40 % mass fraction was confirmed using SEM, XRD, other techniques. It exhibited an exceptional efficiency 45.8 NO3- selectivity 97.4 %. remarkable performance can be attributed improved communication facilitated chemical bonding, XPS results. Additionally, optimized interface not only but also inhibited recombination electron-hole pairs. growth surface g-C3N4 significantly enhanced visible light absorption, UV–vis spectroscopy. study underscores importance precise control over features introduces novel approach for NO oxidation. constructing have interaction within leading performance.

Language: Английский

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Tetraphenylethylene-based photoresponsive supramolecular organic framework and its metallization for photocatalytic redox reactions

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(26), P. 16190 - 16199

Published: Jan. 1, 2024

A tetraphenylethylene-based supramolecular organic framework and its nickel-coordinated analogue were assembled, both exhibited high efficiency in photocatalytic oxidation reactions.

Language: Английский

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Study of Pyrene-Based Covalent Organic Frameworks for Efficient Photocatalytic Oxidation of Low-Concentration No

Published: Jan. 1, 2024

Our study aimed to explore and optimize pyrene-based COFs achieve significant photocatalytic oxidation efficiency of low-concentration NO. Firstly, we synthesized DAPPy-TPA-COF, DAPPy-DMTP-COF, DAPPy-DMTP-COF evaluate the impact structural length presence extra -OCH3 functional groups on performance. Consequently, characterized by a shorter structure an additional group, exhibited highest which leading its further development into covalently linked Type-II heterostructure with g-C3N4. The synthesis DAPPy-DMTP-COF/g-C3N4 utilized Schiff-base reaction, resulting in direct in-situ growth g-C3N4 surface. As result, 40DAPPy-DMTP-CN demonstrated exceptional 45.8% efficiency, attributed improved electron communication though chemical bond porous DAPPY-DMTP-COF. This not only highlights potential applications but also introduces novel approach for enhancing NO through construction covalent heterostructure.

Language: Английский

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Construction of a novel tetraphenylethylene-based supramolecular dimer for improving the generation of reactive oxygen species and photocatalytic performance

Chemical Synthesis, Journal Year: 2024, Volume and Issue: 4(3)

Published: Aug. 10, 2024

Using supramolecular strategies to improve the generation of reactive oxygen species is a practical and environmentally friendly method, but it also difficult undertaking. In this study, we created produced vinylpyridine-modified tetraphenylethylene derivative TPE-Py-I, which has excellent solubility in water ability construct dimers (2TPE-Py-I@CB[8]) an aqueous solution through host-guest interaction with cucurbit[8]uril (CB[8]). The dimer demonstrated remarkable aggregation-induced emission response, fluorescence progressively intensifying upon introduction CB[8]. Meanwhile, formation greatly improved intersystem crossing effect molecular assembly system, so that including singlet (1O2) superoxide anion radical (O2•-) were enhanced, provided basis for its application as photosensitizer photocatalytic organic reactions. To our delight, 2TPE-Py-I@CB[8] exhibits properties, making suitable both phosphine photooxidation cross-dehydrogenative coupling This work provides non-covalent strategy development photosensitizers broadens field conversion.

Language: Английский

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Adsorption and Removal of 2,4,6-Trinitrotoluene by a Glycoluril-Derived Molecular-Clip-Based Supramolecular Organic Framework

Molecules, Journal Year: 2024, Volume and Issue: 29(24), P. 5822 - 5822

Published: Dec. 10, 2024

A glycoluril-derived molecular-clip-based supramolecular organic framework (clip-SOF) with intrinsic porosity was prepared. The clip-SOF used for the adsorption and removal of 2,4,6-trinitrotoluene (TNT) driven by noncovalent interactions. efficiency TNT clip-SOFs is up to 88.5% in equilibrium, capacity about 40.2 mg/g at 25.0 °C. Clip-SOFs have good reusability, exhibiting almost no loss performance ten consecutive recycling tests. This work not only provides a new method adsorbing energetic materials, but also promotes application hosts crystal engineering.

Language: Английский

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