Figure 4.
UV–Vis absorption spectra of Au colloid solution, Cu2O nanocrystals, AC-1 NCs, AC-3 NCs, AC-5 NCs, AC-7 NCs, AC-9 NCs, and AC-11 NCs. The inset is the photograph of AC-1 NCs, AC-3 NCs, AC-5 NCs, AC-7 NCs, AC-9 NCs, and AC-11 NCs.
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