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Issue 76, 2017
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High magnetic relaxivity in a fluorescent CdSe/CdS/ZnS quantum dot functionalized with MRI contrast molecules

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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

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Supplementary files

Article information


Submitted
18 Jul 2017
Accepted
15 Aug 2017
First published
22 Aug 2017

Chem. Commun., 2017,53, 10500-10503
Article type
Communication

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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