| DOI | Trouver le DOI : https://doi.org/10.1021/ja2025189 |
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| Auteur | Rechercher : Kelly, Joel A.; Rechercher : Shukaliak, Amber M.; Rechercher : Fleischauer, Michael D.1; Rechercher : Veinot, Jonathan G.C. |
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| Affiliation | - Conseil national de recherches du Canada. Institut national de nanotechnologie
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| Format | Texte, Article |
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| Sujet | FTIR; Near-IR; Partial separation; Photochemical hydrosilylation; Quantum size effects; Silicon nanocrystals; Size-dependent reactivity; Small angle X-ray scattering; Visible and near infrared; Visible spectral regions; Hydrosilylation; X ray scattering; nanocrystal; chemical reaction; hydrosilylation; infrared spectroscopy; photochemistry; photoluminescence; ultraviolet radiation; X ray crystallography |
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| Résumé | We present an investigation into the influence of nanocrystal size on the reactivity of silicon nanocrystals (Si-NCs) in near-UV photochemical hydrosilylation. The size-dependent reactivity of Si-NCs with photoluminescence (PL) in the visible and near-infrared regions was evaluated using PL and Fourier-transform infrared (FTIR) spectroscopy, and small-angle X-ray scattering (SAXS). Under near-UV excitation, Si-NCs with PL in the visible spectral region react faster than Si-NCs with near-IR PL, allowing partial separation of a mixture of Si-NC sizes through hydrosilylation. This is attributed to quantum size effects in the exciton-mediated mechanisms proposed for this reaction. © 2011 American Chemical Society. |
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| Date de publication | 2011 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21272028 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 822f70ed-d191-40a2-b574-2a5de334cbe8 |
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| Enregistrement créé | 2014-05-21 |
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| Enregistrement modifié | 2020-04-21 |
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