Journal
NEW JOURNAL OF CHEMISTRY
Volume 37, Issue 10, Pages 3076-3083Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nj00407d
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [21236003, 21206042, 20925621, 20976054, 21176083]
- Fundamental Research Funds for the Central Universities
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0825]
Ask authors/readers for more resources
We synthesized cadmium-free CuInS2-Zn1-xMnxS core-shell quantum dots (QDs) for use in dual-mode optical and magnetic resonance (MR) imaging techniques. Manganese content was in the rang of 0.2-2.3% and varies with the amount of Mn2+ content in the reaction. These materials presented a high quantum yield (QY) of 52% in organic solvent. The CuInS2-Zn1-xMnxS nanoparticles were subsequently transferred to the aqueous phase by the aid of cetyltrimethylammonium bromide (CTAB), and the QY values in water reached 18%. Relaxivity measurements showed that these materials had a T-1 relaxivity (r(1)) of 7.2 mM(-1) s(-1) on the 3.0 T scanner, suggesting the possibility of using the nanoparticles as a T-1 contrast agent. The nanomaterials for both optical and MR imaging in aqueous solution were applied to cells in culture. These results showed that the QY and manganese concentration in the nanoparticles was sufficient to produce contrast for both modalities at relatively low concentrations of nanoparticles.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available