Ultrasmall gold-encapsulated mesoporous platinum to promote photodynamic/catalytic therapy through cascade enzyme-like reactions

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 680, P. 117 - 128

Published: Nov. 3, 2024

Language: Английский

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Pyrene‐Alkyne‐Based Conjugated Porous Polymers with Skeleton Distortion‐Mediated •O2‐ and 1O2 Generation for High‐Selectivity Organic Photosynthesis

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: May 31, 2024

Abstract Reactive oxygen species (ROS) play a crucial role in determining photocatalytic reaction pathways, intermediate species, and product selectivity. However, research on ROS regulation polymer photocatalysts is still its early stages. Herein, we successfully achieved series of modulations to the skeleton Pyrene‐alkyne‐based (Tetraethynylpyrene (TEPY)) conjugated porous polymers (CPPs) by altering linkers (1,4‐dibromobenzene (BE), 4,4′‐dibromobiphenyl (IP), 3,3′‐dibromobiphenyl (BP)). Experiments combined with theoretical calculations indicate that BE‐TEPY exhibits planar structure minimal exciton binding energy, which favors dissociation followed charge transfer adsorbed O 2 produce ⋅O − . Thus shows optimal activity for phenylboronic acid oxidation [3+2] cycloaddition. Conversely, BP‐TEPY significantly distorted. Its conjugation decreases, intersystem crossing (ISC) efficiency increases, makes it more prone resonance energy generate 1 Therefore, displays best [4+2] cycloaddition thioanisole oxidation. Both above reactant conversion selectivity exceed 99 %. This work systematically reveals intrinsic structure–activity relationship among CPPs, excitonic behavior, selective generation ROS, providing new insights rational design highly efficient CPPs photocatalysts.

Language: Английский

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First report on the utility of organotellurium compound as stabilizer in the colloidal synthesis of applied nanocatalytic system having transition metal: application in O-arylation of phenol

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(32), P. 14140 - 14144

Published: Jan. 1, 2024

The application of an organotellurium ligand as a stabilizer palladium nanoparticles has been reported, and these have the potential to catalyze O -arylation phenols, even with aryl chlorides having deactivating substituents.

Language: Английский

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Highly spontaneous spin polarization engineering of single-atom artificial antioxidases towards efficient ROS elimination and tissue regeneration

Nanoscale, Journal Year: 2024, Volume and Issue: 16(34), P. 15946 - 15959

Published: Jan. 1, 2024

The creation of atomic catalytic centers has emerged as a conducive path to design nanobiocatalysts serve artificial antioxidases that can mimic the natural scavenge reactive oxygen species for promoting tissue regeneration.

Language: Английский

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CCL2-scavenging nanodecoy hydrogel multi-step remodel monocytes recruitment and macrophages polarization for periodontitis treatment

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 501, P. 157660 - 157660

Published: Nov. 13, 2024

Language: Английский

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