Research Article
Supramolecular Assembly and Reversible Transition and of Chitosan Fluorescent Micelles by Noncovalent Modulation
Figure 5
(a) TEM image of the micelles at . Inset: size distributions of aqueous solutions of chitosan and TPE-(N-COOH)4 mixture at . (b) The zeta potential of micelles at different pH values. pH-dependence fluorescence emission spectra recorded for the aqueous solution of (c) WCS/TPE-(N-COOH)4 micelles and (d) TPE-(N-COOH)4 with pH decreasing from 8 to 2, nm, 25°C. The molar ratio of [NH3+]/[COO-] was 1.0, and the TPE-(N-COOH)4 concentration was fixed at 1.0 g/L in all cases.
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