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PH-Dependent structure of water-exposed surfaces of CdSe quantum dots.

ABSTRACT: Increasing negative charge density at the surfaces of CdSe quantum dots (QDs) effects a bathochromic shift of their ground state optical spectra with increasing pH due to electrostatic and chemical modifications at the QD surface. These modifications are enabled by weakly-bound ligands that expose the surface to the aqueous environment.

SUBMITTER: Westmoreland DE 

PROVIDER: S-EPMC6556383 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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pH-Dependent structure of water-exposed surfaces of CdSe quantum dots.

Westmoreland Dana E DE   Nap Rikkert J RJ   Arcudi Francesca F   Szleifer Igal I   Weiss Emily A EA  

Chemical communications (Cambridge, England) 20190501 38

Increasing negative charge density at the surfaces of CdSe quantum dots (QDs) effects a bathochromic shift of their ground state optical spectra with increasing pH due to electrostatic and chemical modifications at the QD surface. These modifications are enabled by weakly-bound ligands that expose the surface to the aqueous environment. ...[more]