charged laponite was added to the host-guest system, positively charged
guanidinium groups would bind to the surface of it through electrostatic interaction.
Through the abovementioned process, a broadly luminescent hydrogel was
constructed due to the broadly luminescence of Ln ions. In addition, because the
binding behavior is depending on the conformation of azobenzene group and α-CD,
this organic-inorganic hybrid system could be adjusted between sol and gel states.
17.3.4.2 Pressure-Sensitive Materials
Urayama and Ito et al. [69] reported a pressure-responsive film based on the “slidering” supramolecular hydrogel (Fig. 19). As we all know, fluid obeys Darcy’s law
when it flows through a film under pressure-driven flow. Namely, the liquid flow rate
is proportional to the pressure (P) and inversely proportional to the friction
Fig. 17 Schematic illustration of a light-responsive hydrogel based on epichlorohydrin crosslinked β-CDs and azobenzene [66]
Fig. 18 Schematic illustration of a photo-responsive luminescent gel based on hierarchical selfassembly of the host-guest inclusion complex [68]
500
Q. Zhao et al.
guanidinium groups would bind to the surface of it through electrostatic interaction.
Through the abovementioned process, a broadly luminescent hydrogel was
constructed due to the broadly luminescence of Ln ions. In addition, because the
binding behavior is depending on the conformation of azobenzene group and α-CD,
this organic-inorganic hybrid system could be adjusted between sol and gel states.
17.3.4.2 Pressure-Sensitive Materials
Urayama and Ito et al. [69] reported a pressure-responsive film based on the “slidering” supramolecular hydrogel (Fig. 19). As we all know, fluid obeys Darcy’s law
when it flows through a film under pressure-driven flow. Namely, the liquid flow rate
is proportional to the pressure (P) and inversely proportional to the friction
Fig. 17 Schematic illustration of a light-responsive hydrogel based on epichlorohydrin crosslinked β-CDs and azobenzene [66]
Fig. 18 Schematic illustration of a photo-responsive luminescent gel based on hierarchical selfassembly of the host-guest inclusion complex [68]
500
Q. Zhao et al.