Colorimetric and fluorometric detection of cationic surfactants based on conjugated polydiacetylene supramolecules

摘要

The polydiacetylenes derived from a hydroxybenzaldehyde substituted diacetylene monomer display a unique colorimetric change (blue to red) and large fluorescent enhancement in the presence of cetyl triniethylammonium salt.rnPolydiacetylenes (PDAs), a family of conjugated polymers, are very intriguing materials in several ways.1 Firstly, these polymers are generally prepared by UV irradiation of self-assembled diacetylene (DA) supramolecules. Secondly, if PDAs are prepared under optimal conditions, they, in many cases, display an intense blue color with a maximum absorption wavelength at ca. 640 nm.