(a) High-resolution transmission electron microscopic images of Spd-1 (P1/DCM7-β-CD = 4 μM/4 μM), Spd-2 (P2/DCM7-β-CD = 4 μM/4 μM), and Spd-3 (P3/DCM7-β-CD = 4 μM/4 μM) recorded on a JEM-2100 TEM system. (b) Dynamic light scattering analyses of DCM7-β-CD (4 μM), P1 (4 μM), P2 (4 μM), P3 (4 μM), Spd-1 (P1/DCM7-β-CD = 4 μM/4 μM), Spd-2 (P2/DCM7-β-CD = 4 μM/4 μM), and Spd-3 (P3/DCM7-β-CD = 4 μM/4 μM).