Correction to “Structure of Colloidal Quantum Dots from Dynamic

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Correction to “Structure of Colloidal Quantum Dots from Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy” Laura Piveteau, Ta-Chung Ong, Aaron J. Rossini, Lyndon Emsley,* Christophe Copéret,* and Maksym V. Kovalenko* J. Am. Chem. Soc. 2015, 137, 13964−13971. DOI: 10.1021/jacs.5b09248 Page 13967. In the Results and Discussion sub-section “CdSe QDs”, the chemical shift of the core of CdSe oleate-capped QDs was incorrectly reported to be −20 ppm instead of the correct value of −60 ppm. The seventh sentence of the subsection should begin, “With DNP surface enhanced NMR, we observed a signal at −60 ppm from the QD core...”. This inadvertent error was repeated in the caption of Figure 4 on page 13968. These changes do not affect in any way the

Figure 4. DNP enhanced D-HMQC spectrum correlating 13C-1-oleate ligands and 111Cd of ZB-CdSe. Projections of the 2D spectrum are shown in dark blue. A DNP NMR 111Cd CPMAS spectrum acquired separately is shown in light gray. The isotropic shifts of the surface and core Cd-species identified before (Figure 3) are highlighted with solid and dotted black curves. The spinning sidebands are marked by asterisks. It is apparent that the Cd-species with signal at −317 ppm is directly binding to oleic acid. No correlation between the 111Cd of the QD core (−60 ppm) and 13C nuclei of the ligand was observed for the recoupling time used (3 ms). In control experiments, the DNP enhanced NMR spectrum of free Cd(oleate)2 diluted in TCE is characterized by a single peak with chemical shift distinctly different from all Cd signals recorded from ZB-CdSe QDs (Figure S8). Here 111 Cd was used rather than the more sensitive 113Cd since the triple resonance probe could not be configured in 1H/13C/113Cd mode. First order rotary resonance recoupling (R3) was employed.

results and conclusions of this work. The corrected Figure 4 is shown here.

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DOI: 10.1021/jacs.7b11716 J. Am. Chem. Soc. XXXX, XXX, XXX−XXX