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. 2016 Mar 18;13(3):334. doi: 10.3390/ijerph13030334

Figure 1.

Figure 1

Characterizations of PEI25k-AgNCs. (a) The UV-Vis spectra of PEI-AgNCs (dark curve) and PEI (red curve); (b) The excitation (dark curve) and emission (red curve) spectra, where EX/EM represents the excitation/emission wavelength; (c) Their HRTEM image; (d) The corresponding statistic diameter.