A thermally reversible supramolecular system based on biphenyl polydiacetylene

A new type of diacetylene monomer which includes a biphenylcarboxylic acid group as its head group is synthesized. Polymerization was performed after monomer form spherical vesicle by self-assembly in the water. The polydiacetylene displayed completely thermochromic color change in the range of 20–95 °C owing to the presence of strong π–π interaction caused by biphenyl group and hydrogen bonding between head group.

A new type of polydiacetylene, which derived from biphenyl-linked diacetylene, is developed. This new polydiacetylene displays a completely reversible blue-to-red color transition upon thermal stress.Figure optionsDownload as PowerPoint slide