Figure 3 | Scientific Reports

Figure 3

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

Figure 3

AIEE phenomenon and shape evolution of Hb-regulated porous hollow luminescent platinum tetrahedrons. (a) Emission spectra of Hb/Pt NCs in mixed solvents with different fe at λex = (320 nm)/(450 nm) and λex/λem = (320 nm)/(760 nm). (b) Size distributions and (c) UV−vis spectra of Hb/Pt NCs versus fe. The results were recorded at 30 min after mixing Hb/PtNC solution (1.1 µM) with different ethanol concentrations. TEM and HRTEM images of the porous hollow Pt nanocrystals obtained from mixtures of 0.11 mM Hb and 0.125 mM H2PtCl6 in the over reaction time at 37 °C: 1 day (d–f), 10 days (g–i), and 22 days (j–l). Insets are high resolution images of the marked areas (left) with the corresponding FFT patterns (right). Scale bars: 100 nm for TEM images and 50 nm for corresponding insets shown in (d,g,j); 5 nm for (e,f); 10 nm for (h,i); 20 nm for (k,l); 2 nm for inset circles shown in (h,i,k,l).

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