Figure 1.

UV-vis absorption spectra. (A) The new cluster product (black profile, crude product without any extraction; red, after two extractions), (B) pure Au24(SC2H4Ph)20, and (C) pure Au20(SC2H4Ph)16.

Meng et al. Nanoscale Research Letters 2012 7:277   doi:10.1186/1556-276X-7-277
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