Fig. 2. (A) Reaction mixtures after grinding in a ball mill. Aggregation in the ball mill (a) after 99 min in the presence of 1,5-cod, (b) after 99 min in the presence of cyclooctane, and (c) after 99 min in the absence of an additive. TEM images of the palladium nanoparticles in the crude reaction mixtures: (B) after 99 min in the presence of 1,5-cod, (C) after 99 min in the presence of cyclooctane, and (D) after 99 min in the absence of an additive. Scale bar in the TEM images (bottom left): 20 nm.
