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Figure 1

From: Shape-Controlled Synthesis of Luminescent Hemoglobin Capped Hollow Porous Platinum Nanoclusters and their Application to Catalytic Oxygen Reduction and Cancer Imaging

Figure 1

Photophysical characterization and optimization. (a) Photographs of the Hb/Pt NCs with different molar ratios of Pt/Hb under (A) UV illumination (λex = 365 nm) and (B) visible light. (b) Emission of as-prepared Pt nanoclusters with different molar ratios of Pt/Hb at the same Hb concentration (0.11 mM). (c) UV–vis and (d) Emission spectra of Hb/Pt NCs obtained from monitoring reaction times with 0.11 mM Hb and 0.125 mM H2PtCl6 at 37 °C. (e) MALDI MS data of Hb (blue) and Hb/Pt NCs (red) collected after 22 days. Shift in mass was compared against the mass of Hb at pH ∼ 12.4. (f) X-ray photoelectron spectrum of Pt 4f7/2 for the Hb/Pt NCs obtained after 22 days at 37 °C.

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