24 Biomimetic Functions by Microscopic Molecular Reactions …
419
Fig. 24.10 a Molecular structure of the open- (left) and closed-ring (right) isomers of diarylethene
derivative 6 and b the concept of the photoreactive object transportation system
Fig. 24.11 Packing of molecules of 6o in the single crystal
width of the platelet crystals of the 6o on the glass substrate was 384.5 and 10.5 µm,
respectively (Fig. 24.12c,d).
The long axis of the platelet crystals in Fig. 24.12 is assigned to the b-axis in
Fig. 24.11. Upon UV irradiation from both (100) and (001) surfaces, the crystal bends
far from incidence because short axis of 6o molecules expands at photo-irradiated
surface.
To the surface with array of bending crystals of 6o, UV light was irradiated
from left side. Then, all crystals bent to right side cooperatively. On the surface,
419
Fig. 24.10 a Molecular structure of the open- (left) and closed-ring (right) isomers of diarylethene
derivative 6 and b the concept of the photoreactive object transportation system
Fig. 24.11 Packing of molecules of 6o in the single crystal
width of the platelet crystals of the 6o on the glass substrate was 384.5 and 10.5 µm,
respectively (Fig. 24.12c,d).
The long axis of the platelet crystals in Fig. 24.12 is assigned to the b-axis in
Fig. 24.11. Upon UV irradiation from both (100) and (001) surfaces, the crystal bends
far from incidence because short axis of 6o molecules expands at photo-irradiated
surface.
To the surface with array of bending crystals of 6o, UV light was irradiated
from left side. Then, all crystals bent to right side cooperatively. On the surface,