Interlayer Structure of Bioactive Molecule, 2-Aminoethanesulfonate, Intercalated into Calcium-Containing Layered Double Hydroxides

Figure 5

UV-Vis spectra for ninhydrin-treated (a) CaAl-LDH, (b) CaFe-LDH, (c) Na⁺-taurine salt, (d) CaAl-Tau-LDH, and (e) CaFe-Tau-LDHs. The inset shows photographs for ninhydrin-treated (a′) CaAl-LDH, (b′) CaFe-LDH, (c′) Na⁺-taurine salt, (d′) CaAl-Tau-LDH, and (e′) CaFe-Tau-LDHs.