Rf 5301 pc instrument

Transmission Electron Microscopy (TEM) images were recorded using a JEM-2100 microscope (JEOS, Japan) to characterize the size and size distribution, a certain concentration of sample solution was spotted on carbon coated copper grid (300 meshes) and was dried in desiccator at room temperature. Energy dispersive X-ray spectroscopy (EDS) analyses was done in a Zeiss Ultra Plus scanning electron microscopic (SEM). The valence state of gold and cerium atoms in the Au/Ce nanoclusters was investigated by a PHI 5000 VersaProbe X-ray photoelectron spectrometer (XPS), briefly, samples were droped on a silicon wafer and dried in laboratory ambience to form evenly spread film. Thermo BioMate 3S UV–visible spectrophotometer was used for the UV–Vis absorption measurements, spectra were typically measured in the range of 200–700 nm. Photoluminescence spectra were carried out using SHIMADZU RF-5301 PC instrument. Cells fluorescence imaging were collected by laser scanning confocal microscope Carl Zeiss LSM710 (Zeiss, Germany). Nude mice in vivo imaging were carried on vivo multispectral imaging system (Maestro EX).

UV/Vis spectra were recorded on a Scinco S-3100 spectrometer, and fluorescence spectra were obtained using a Shimadzu RF-5301PC instrument. Stock solutions of TA1 were prepared in DMSO. All excitation and emission slit widths were set at 5 nm/3 nm. The concentration of each of the samples was fixed at 10 μM in a total volume of 3 mL.