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Figure 9 | Nanoscale Research Letters

Figure 9

From: CdTe Quantum Dot/Dye Hybrid System as Photosensitizer for Photodynamic Therapy

Figure 9

Cell viability studies involving the incubation of cells in MB–NC-containing mixtures after excitation with UV light. Panels a and b show the effect of increasing MB:NC ratio (a) and the effect of the time of excitation with UV light (b) on the growth of HeLa cancerous cells (green bars). The MB only (black bars) and QD only (red bars) controls are also shown. All data was normalized to the no NC or MB control sample. The error bars are shown in blue and represent the standard deviation in cell viability within 8 repeat samples. Higher QD:MB molar ratios and longer UV excitations gave best results over the control experiments in terms of the efficiency of MB acting as a photosensitizer

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