Photoinduced electron transfer across the polymer-capped CsPbBr3 interface in a polar medium

The Journal of Chemical Physics, Год журнала: 2023, Номер 158(14)

Опубликована: Апрель 10, 2023

In-situ polymer capping of cesium lead bromide (CsPbBr3) nanocrystals with polymethyl acrylate is an effective approach to improve the colloidal stability in polar medium and thus extends their use photocatalysis. The photoinduced electron transfer properties (PMA)-capped CsPbBr3 have been probed using surface-bound viologen molecules different alkyl chains as acceptors. apparent association constant (Kapp) obtained for binding PMA-capped was 2.3 × 107 M-1, which order magnitude greater than that oleic acid/oleylamine-capped CsPbBr3. Although length chain molecule did not show any impact on rate constant, it influenced charge separation efficiency net quantum yield. Viologen moieties a shorter exhibited 72% compared 50% longer viologens. Implications polymer-capped perovskite carrying out photocatalytic reduction are discussed.

Язык: Английский

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Nanomaterials in photocatalysed organic transformations: development, prospects and challenges

Chemical Communications, Год журнала: 2023, Номер 59(40), С. 5987 - 6003

Опубликована: Янв. 1, 2023

Nanomaterials are sustainable/heterogeneous alternatives as catalysts for various organic transformations. Over the years, they have garnered paramount importance in fields owing to their structural diversity and unique, tunable properties.

Язык: Английский

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Recyclable photocatalyst perovskite as a single-electron redox mediator for visible-light-driven photocatalysis gram-scale synthesis of 3,4-dihydropyrimidin-2-(1H)-ones/thiones in air atmosphere

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Июнь 24, 2023

Based on the Biginelli reaction of β-ketoesters, arylaldehydes, and urea/thiourea, we created a green radical synthesis procedure for 3,4-dihydropyrimidin-2-(1H)-ones/thiones. A single-electron redox mediator was applied to solution ethanol in an air environment, at room temperature, with blue LEDs as renewable energy source order create. The objective this research is create halide perovskite that widely available, affordable, recyclable, economically feasible. factor mentioned discussion tolerates variety donating withdrawing functional groups while still offering very fast rate excellent yields. range yields quite uniform (86-94%, average: 90.4%), times quick (4-8 min, 5.8 min). Furthermore, gram-scale cyclization shows it applicable use industry. Additionally, CsPbBr3 stable can be used six row without experiencing significant structural changes or activity loss, which has been extremely helpful meeting industrial needs environmental issues.

Язык: Английский

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CsPbBr₃ Perovskite Nanocrystals for Photocatalytic [3+2] Cycloaddition

ChemSusChem, Год журнала: 2023, Номер 17(1)

Опубликована: Авг. 22, 2023

Visible-light-induced halide-exchange between halide perovskite and organohalide solvents has been studied in which photoinduced electron transfer from CsPbBr

Язык: Английский

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Insights into interfacial mechanisms: CsPbBr₃ nanocrystals as sustainable photocatalysts for primary amine oxidation

Chemical Communications, Год журнала: 2024, Номер 60(17), С. 2365 - 2368

Опубликована: Янв. 1, 2024

This study highlights CsPbBr 3 nanocrystals as a potent photocatalyst for oxidative coupling of primary amines to imines, where interfacial interactions markedly impact the reaction yield.

Язык: Английский

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