Academic Journal
Probing solvent-ligand interactions in colloidal nanocrystals by the NMR line broadening
| العنوان: | Probing solvent-ligand interactions in colloidal nanocrystals by the NMR line broadening |
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| المؤلفون: | De Roo, Jonathan, Yazdani, Nuri, Drijvers, Emile, Lauria, Alessandro, Maes, Jorick, Owen, Jonathan S, Van Driessche, Isabel, Niederberger, Markus, Wood, Vanessa, Martins, José, Infante, Ivan, Hens, Zeger |
| المصدر: | CHEMISTRY OF MATERIALS ; ISSN: 0897-4756 ; ISSN: 1520-5002 |
| سنة النشر: | 2018 |
| المجموعة: | Ghent University Academic Bibliography |
| مصطلحات موضوعية: | Chemistry, METAL-SELENIDE NANOCRYSTALS, PBS QUANTUM DOTS, OXIDE NANOCRYSTALS, SURFACE-CHEMISTRY, SIZE, NANOPARTICLES, SUPERLATTICES, EXCHANGE, BINDING, NANOMATERIALS |
| الوصف: | Although solvent-ligand interactions play a major role in nanocrystal synthesis, dispersion formulation, and assembly, there is currently no direct method to study this. Here we examine the broadening of H-1 NMR resonances associated with bound ligands and turn this poorly understood descriptor into a tool to assess solvent-ligand interactions. We show that the line broadening has both a homogeneous and a heterogeneous component. The former is nanocrystal-size dependent, and the latter results from solvent-ligand interactions. Our model is supported by experimental and theoretical evidence that correlates broad NMR lines with poor ligand solvation. This correlation is found across a wide range of solvents, extending from water to hexane, for both hydrophobic and hydrophilic ligand types, and for a multitude of oxide, sulfide, and selenide nanocrystals. Our findings thus put forward NMR line-shape analysis as an indispensable tool to form, investigate, and manipulate nanocolloids. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://biblio.ugent.be/publication/8574910; http://hdl.handle.net/1854/LU-8574910; http://dx.doi.org/10.1021/acs.chemmater.8b02523; https://biblio.ugent.be/publication/8574910/file/8574911 |
| DOI: | 10.1021/acs.chemmater.8b02523 |
| الاتاحة: | https://biblio.ugent.be/publication/8574910 http://hdl.handle.net/1854/LU-8574910 https://doi.org/10.1021/acs.chemmater.8b02523 https://biblio.ugent.be/publication/8574910/file/8574911 |
| Rights: | No license (in copyright) ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.18CCCE7D |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.chemmater.8b02523 |
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