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. Author manuscript; available in PMC: 2009 Apr 1.
Published in final edited form as: J Mater Chem. 2007 Jan 1;17(1):105–112. doi: 10.1039/b614295h

Figure 4.

Figure 4

TEM images (Philips EM-400, 80 keV) of 20-nm Au particles encapsulated in tetraarylthiol 3 with varying degrees of crosslinking, after exposure to C12SH for 16 h at 70 °C. a, no crosslinking; b, treated with 3 mol% G-1 catalyst; c, treated with 30 mol% G-1 catalyst. TEM samples were prepared by depositing toluene dispersions onto Formvar-coated Cu grids (300 mesh), then were slowly dried in air; in the case of a, the precipitated particles were sonicated briefly prior to deposition. Scale bar=150 nm.