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文獻(xiàn)名： Synthesis and characterization of novel nanothermometers

作者： Baumert, Delphine ; Larsen, George ; Coopersmith, Kaitlin ; Schyck, Sarah  ; Murph, Simona

Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

摘要：A straightforward approach was developed for the synthesis of Pd, Pd-Fe2O3, Au-Fe2O3, and Au-Pd-Fe2O3 nanothermometers, using a single SL DNA. These NP-DNA conjugates were characterized using techniques including EDX measurements, ζ-potential of NPs before and after DNA functionalization, electron microscopy studies and fluorescence spectroscopy. The fluorescence studies of the NP-DNA demonstrate the interaction between the NP and the fluorophore, which is quenched in the case of Au-Pd-Fe2O3 NPs and is perhaps enhanced (when compared to AuNPs) in the case of Pd and Pd-Fe2O3 NPs. In order to achieve more accurate and reproducible measurements, designing a system that is able to hold the NP-DNA conjugates at a temperature for a longer period of time to allow them to 12 equilibrate is currently underway. Our studies show that Au-Pd-Fe2O3 NPs are the best candidate material to serve as nanothermometers when compared to Pd, Pd-Fe2O3, and Au-Fe2O3 materials.