Polydiacetylene blue shift

Figure 27 Photopolymerization of the precursor with an embedded butadyine moiety leads to a blue-colored polydiacetylene material (a) analyte binding to the receptor or affinity moiety (red pentagon) results in a change in the polydiacetylene conjugated backbone and shift of absorption spectra from blue to red and (b) photographs of wells comprising solution Zn(dipicolylamine)2 containing liposome (0.25 mM) and various sodium salts anions (0.25 mM) in HEPES buffer, pH = 7. (Adapted from Ref. 126. Wiley-VCH, 2011.)...

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