Issue 76, 2017

High magnetic relaxivity in a fluorescent CdSe/CdS/ZnS quantum dot functionalized with MRI contrast molecules

Abstract

Light emitting semiconducting quantum dots show great promise as solar cells, optoelectronic devices and multimodal imaging probes. Here we demonstrate successful grafting of a thiol-functionalised GdIII MRI contrast agent onto the surface of core-multishell CdSe/CdS/ZnS quantum dots. The resulting nanoprobe exhibits intense photoluminescence and unprecedentedly large T1 relaxivity of 6800 mM−1 s−1 per nanoparticle due to secure implanting of ca. 620 magnetic centers per quantum dot unit.

Graphical abstract: High magnetic relaxivity in a fluorescent CdSe/CdS/ZnS quantum dot functionalized with MRI contrast molecules

Supplementary files

Article information

Article type
Communication
Submitted
18 7 2017
Accepted
15 8 2017
First published
22 8 2017

Chem. Commun., 2017,53, 10500-10503

High magnetic relaxivity in a fluorescent CdSe/CdS/ZnS quantum dot functionalized with MRI contrast molecules

S. G. McAdams, D. J. Lewis, P. D. McNaughter, E. A. Lewis, S. J. Haigh, P. O’Brien and F. Tuna, Chem. Commun., 2017, 53, 10500 DOI: 10.1039/C7CC05537D

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