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- W2080886729 abstract "In this work, we report a novel method of single step facile synthesis of magnetite nanoclusters via thermal decomposition of iron(III) acetylacetonate in a liquid mixture of tri(ethylene glycol) (TREG) and triethanolamine (TREA). The optimized ratio of TREG : TREA has been found to be 1 : 4 (v/v) for the formation of well dispersed MNC-14 magnetite nanoclusters with high Ms values (75 emu g−1) as compared to MNC-10 magnetite nanoparticles (63 emu g−1). The MNC-14 nanoclusters were found to be nontoxic to MCF-7 cells up to an iron concentration of 10 mg ml−1. The MNC-14 nanoclusters yielded high specific absorption rate (SAR) values (∼500 Watt g−1 at 89 kA m−1 AC magnetic field and 240 kHz frequency) and thus qualified for their possible use in magnetic hyperthermia treatment, while MNC-10 nanoparticles possess a much lower SAR value of 135 Watt g−1. In vitro magnetic hyperthermia experiments (using the MNC-14 nanoclusters with the iron concentration of 0.5 mg ml−1) showed about 74% loss in viability of MCF-7 breast cancer cells indicating that they are a very suitable candidate for magnetic hyperthermia treatment of cancer. The r2 and r2* relaxivity values of MNC-14 nanoclusters (294.99 and 450.05 s−1 mM−1) as measured by a 9.4 T MRI scanner were higher than those for the MNC-10 nanoparticles (205.6 and 309.2 s−1 mM−1). The MNC-14 nanoclusters also showed very promising in vivo tumor imaging. Thus, the newly synthesized novel MNC-14 nanoclusters possess great potential in clinical MRI and magnetic hyperthermia applications and may be used simultaneously for cancer diagnosis and therapy." @default.
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- W2080886729 date "2011-01-01" @default.
- W2080886729 modified "2023-10-09" @default.
- W2080886729 title "Novel synthesis of superparamagnetic magnetite nanoclusters for biomedical applications" @default.
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- W2080886729 doi "https://doi.org/10.1039/c1jm11982f" @default.
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