Polydiacetylenes

{
  "id": "MLC-T-CHM-009128",
  "term": "Polydiacetylenes",
  "field": "Chemistry",
  "definition": "A class of conjugated polymers made from buta-1,3-diyne or its substituted derivatives, typically by photo-induced 1,4-addition polymerization in the crystalline state, which gives a backbone of alternating double and triple bonds. They show strong color changes with heat, solvent and mechanical stress, and large third-order optical nonlinearity. Polydiacetylenes are a subclass of both conjugated polymers and polyacetylenes.",
  "subject": "Polymer",
  "see_also": [
    "conjugated polymer",
    "polyacetylenes"
  ],
  "references": [
    "PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 56 (https://doi.org/10.1515/pac-2020-0501)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/polydiacetylenes/"
}