Fluorescent Gold Nanoclusters: Synthesis and Recent Biological Application

Figure 13

hMSCs were treated with dextran-coated 11MUA-Au nanodots for 24 h and then processed for two-photon and confocal microscopic examination. (a) Cell nucleus was stained with DAPI (blue color). (b) Actin fiber was stained with rhodamine phalloidin to confirm the cell boundary (red color). (c) Dextran-coated 11MUA-Au nanodots exhibit a two-photon emission (green luminescence) for in vitro bioapplication. (d) Fluorescence image overlay of the three images demonstrating the internalization of 11MUA-Au nanodots residing near the nucleus. Reprinted with permission from [179], ©2009, American Chemical Society.

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