Exceptionally Mild Reactive Stripping of Native Ligands from Nanocrystal Surfaces by Using Meerwein’s Salt

Authors


  • We gratefully acknowledge A. Dong and E. Chan for helpful discussions regarding the manuscript, A. Brand for development of the PbSe synthesis, S. Doris for assistance with ICP-AES, A. Hammack for assistance with XPS, Z. Liu (beamline 9.3.2) and A. Hexemer (beamline 7.3.3) of the Advanced Light Source for assistance with XPS and GISAXS, respectively, and K. Kjoller of Anasys Instruments for nano-IR analysis. This work was funded in part by the Laboratory Directed Research and Development Program (A.L.) and by the DOE Early Career Research program (D.J.M.) and work was completed at the Molecular Foundry, supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under contract no. DE-AC02-05CH11231.

Abstract

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Blanke Oberflächen: Trialkyloxoniumsalze sind universelle Reagentien für die Ligandenabspaltung von carboxylat-, phosphonat- und aminpassivierten Nanokristallen zur Bildung von blanken oder BF4/DMF-passivierten Oberflächen. Meerwein-aktivierte dünne PbSe-Nanokristallfilme (siehe Bild) weisen Lochbeweglichkeiten von 2–4 cm2 V−1 s−1 auf, was Anwendungen dieses Prozesses zur Herstellung von Hochleistungskomponenten in Reichweite bringt.

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