Wiktionary
polydiacetylenes
n. (plural of polydiacetylene English)
Wikipedia
Polydiacetylenes
Polydiacetylenes (PDAs) are a family of conducting polymers closely related to polyacetylene. They are created by the 1,4 topochemical polymerization of diacetylenes. They have multiple applications from the development of organic films to immobilization of other molecules.