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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 190, 2015 - Issue 12: Robert Holmes Special Issue
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Original Articles

Zwitterionic Ligands Bound to Cdse/Zns Quantum Dots Prevent Adhesion to Mammalian Cells

Ryan F. LandisDepartment of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts01003, USA
,
Rui TangDepartment of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts01003, USA
,
Singyuk HouDepartment of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts01003, USA
,
Mahdieh YazdaniDepartment of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts01003, USA
,
Yiwei LeeDepartment of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts01003, USA
&
Vincent M. RotelloDepartment of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts01003, USACorrespondence[email protected]
Pages 2302-2306 | Received 16 Jun 2015, Accepted 05 Aug 2015, Published online: 10 Dec 2015
 
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GRAPHICAL ABSTRACT

Abstract

Zwitterionic materials are useful tools in material science and biology as they provide high water solubility while preventing nonspecific interactions. Quantum dots (QDs) functionalized with zwitterionic and quaternary ammonium ligands were synthesized to investigate their interactions with the outer membrane of HeLa cells. Quaternary ammonium functionalized quantum dots adhered strongly to the cell surface while zwitterionic QDs had no cell adhesion. These results demonstrate that future noninteracting nanoparticles based on this design are possible.

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