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Hal Van Ryswyk et al...

Estimating Quantum Dot Size with Pulsed Field Gradient NMR
(Journal Article) - USA :American Chemical Society ,May 2023 - 2021–2026 p. - American Chemical Society, Volume 100, Issue 5 .

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Abstract-


Pulsed field gradient nuclear magnetic resonance (NMR) is used to estimate the size of quantum dots (QDs) produced in a simple, fast, small-scale synthesis. This upper-division laboratory experiment teaches the basics of QD synthesis and pulsed field gradient NMR, a powerful technique for measuring diffusion coefficients in solution. The diffusion coefficients are used to calculate hydrodynamic radii, which are compared to core radii obtained from optical absorbance sizing curves, providing insight into the structure of QDs in colloidal suspension and the nature of the information provided by pulsed field gradient NMR.
















ISSN: 0021-9584

Source: RIEBPL Library

Subjects--Topical Terms:
Upper-Division Undergraduate
Inorganic Chemistry
Physical Chemistry
Interdisciplinary/Multidisciplinary
Laboratory Instruction
Hands-On Learning/Manipulatives
UV−Vis Spectroscopy

Dewey Class. No.: 540.7