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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Striccoli, Marinella
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Surface-Engineered Cesium Lead Bromide Perovskite Nanocrystals for Enabling Photoreduction Activitycitations
- 2024Au nanoparticle decorated reduced graphene oxide and its electroanalytical characterization for label free dopamine detectioncitations
- 2023One-Pot Synthesis of Dual Color-Emitting CDs: Numerical and Experimental Optimization towards White LEDscitations
- 2023Dye-Derived Red-Emitting Carbon Dots for Lasing and Solid-State Lightingcitations
- 2023Au nanoparticles decorated nanographene oxide-based platform: Synthesis, functionalization and assessment of photothermal activitycitations
- 2021Role of spacer cations and structural distortion in two-dimensional germanium halide perovskitescitations
- 2021Size-tunable and stable cesium lead-bromide perovskite nanocubes with near-unity photoluminescence quantum yieldcitations
- 2021PbS nanocrystals decorated Reduced Graphene Oxide for NIR responsive capacitive cathodescitations
- 2021Cu 2−x S nanocrystal synthesis: a chemical toolbox for controlling nanocrystal geometry, phase and plasmonic behaviorcitations
- 2020CsPbBr3 Nanocrystals-Based Polymer Nanocomposite Films: Effect of Polymer on Spectroscopic Properties and Moisture Tolerancecitations
- 2019Enhanced performances of RGO-AuNPs hybrids towards electroanalytical applications
- 2019Design of hybrid dye/colloidal nanocrystal composites for energy and charge transfer processes
- 2019Exploration of energy and charge transfer processes in dye/colloidal semiconductor nanocrystal hybrids
- 2014Nanocomposites Based on Luminescent Colloidal Nanocrystals and Polymeric Ionic Liquids towards Optoelectronic Applicationscitations
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article
Surface-Engineered Cesium Lead Bromide Perovskite Nanocrystals for Enabling Photoreduction Activity
Abstract
<p>In recent years, colloidal lead halide perovskite (LHP) nanocrystals (NCs) have exhibited such intriguing light absorption properties to be contemplated as promising candidates for photocatalytic conversions. However, for effective photocatalysis, the light harvesting system needs to be stable under the reaction conditions propaedeutic to a specific transformation. Unlike photoinduced oxidative reaction pathways, photoreductions with LHP NCs are challenging due to their scarce compatibility with common hole scavengers like amines and alcohols. In this contribution, it is investigated the potential of CsPbBr<sub>3</sub> NCs protected by a suitably engineered bidentate ligand for the photoreduction of quinone species. Using an in situ approach for the construction of the passivating agent and a halide excess environment, quantum-confined nanocubes (average edge length = 6.0 ± 0.8 nm) are obtained with a low ligand density (1.73 ligand/nm<sup>2</sup>) at the NC surface. The bifunctional adhesion of the engineered ligand boosts the colloidal stability of the corresponding NCs, preserving their optical properties also in the presence of an amine excess. Despite their relatively short exciton lifetime (τ<sub>AV</sub> = 3.7 ± 0.2 ns), these NCs show an efficient fluorescence quenching in the presence of the selected electron accepting quinones (1,4-naphthoquinone, 9,10-phenanthrenequinone, and 9,10-anthraquinone). All of these aspects demonstrate the suitability of the NCs for an efficient photoreduction of 1,4-naphthoquinone to 1,4-dihydroxynaphthalene in the presence of triethylamine as a hole scavenger. This chemical transformation is impracticable with conventionally passivated LHP NCs, thereby highlighting the potential of the surface functionalization in this class of nanomaterials for exploring new photoinduced reactivities.</p>