Multifunctional Quantum‐Dot‐Based Magnetic Chitosan Nanobeads
Identifieur interne : 000926 ( Main/Exploration ); précédent : 000925; suivant : 000927Multifunctional Quantum‐Dot‐Based Magnetic Chitosan Nanobeads
Auteurs : W. Tan [Singapour] ; Y. Zhang [Singapour]Source :
- Advanced Materials [ 0935-9648 ] ; 2005-10-04.
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Abstract
Chitosan nanobead encapsulation of quantum dots (QDs) produces water‐soluble, stable fluorescent markers for biomedical imaging. As shown in the Figure, derivatization of QDs with 3‐mercaptopropionic acid (3MPA) produces a negatively charged surface to which positively charged chitosan is electrostatically attracted. MRI contrast agents such as Gd‐DTPA can also be incorporated into the nanobeads, which are small enough to be incorporated into individual cells.
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DOI: 10.1002/adma.200401650
Affiliations:
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