Figure 3.
SEM images of 0.303 mM polystyrene beads (PSBs) used for control experiments. (a) PSBs alone (X14000); (b) PSBs + DTR-3 (5 equiv; 0.07 mM; X7000); (c) PSBs + RhB (10 equiv; 3.4 mM; X6000). (d–f) Zooms of a, b, and c at (d) X60000; (e) X30000; and (f) X30000, respectively. All the samples were air-dried at 36 °C after incubating for 1 h with the indicated guest molecule.