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Probing solvent-ligand interactions in colloidal nanocrystals by the NMR line broadening

(2018) CHEMISTRY OF MATERIALS. 30(15). p.5485-5492
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Center for nano- and biophotonics (NB-Photonics)
Abstract
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.
Keywords
METAL-SELENIDE NANOCRYSTALS, PBS QUANTUM DOTS, OXIDE NANOCRYSTALS, SURFACE-CHEMISTRY, SIZE, NANOPARTICLES, SUPERLATTICES, EXCHANGE, BINDING, NANOMATERIALS

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Citation

Please use this url to cite or link to this publication:

Chicago
De Roo, Jonathan, Nuri Yazdani, Emile Drijvers, Alessandro Lauria, Jorick Maes, Jonathan S Owen, Isabel Van Driessche, et al. 2018. “Probing Solvent-ligand Interactions in Colloidal Nanocrystals by the NMR Line Broadening.” Chemistry of Materials 30 (15): 5485–5492.
APA
De Roo, J., Yazdani, N., Drijvers, E., Lauria, A., Maes, J., Owen, J. S., Van Driessche, I., et al. (2018). Probing solvent-ligand interactions in colloidal nanocrystals by the NMR line broadening. CHEMISTRY OF MATERIALS, 30(15), 5485–5492.
Vancouver
1.
De Roo J, Yazdani N, Drijvers E, Lauria A, Maes J, Owen JS, et al. Probing solvent-ligand interactions in colloidal nanocrystals by the NMR line broadening. CHEMISTRY OF MATERIALS. 2018;30(15):5485–92.
MLA
De Roo, Jonathan et al. “Probing Solvent-ligand Interactions in Colloidal Nanocrystals by the NMR Line Broadening.” CHEMISTRY OF MATERIALS 30.15 (2018): 5485–5492. Print.
@article{8574910,
  abstract     = {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.},
  author       = {De Roo, Jonathan and Yazdani, Nuri and Drijvers, Emile and Lauria, Alessandro and Maes, Jorick and Owen, Jonathan S and Van Driessche, Isabel and Niederberger, Markus and Wood, Vanessa and Martins, Jos{\'e} and Infante, Ivan and Hens, Zeger},
  issn         = {0897-4756},
  journal      = {CHEMISTRY OF MATERIALS},
  language     = {eng},
  number       = {15},
  pages        = {5485--5492},
  title        = {Probing solvent-ligand interactions in colloidal nanocrystals by the NMR line broadening},
  url          = {http://dx.doi.org/10.1021/acs.chemmater.8b02523},
  volume       = {30},
  year         = {2018},
}

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