Reversible-addition-fragmentation chain-transfer agent

{
  "id": "MLC-T-CHM-010325",
  "term": "Reversible-addition-fragmentation chain-transfer agent",
  "field": "Chemistry",
  "definition": "A compound that mediates polymerization by a reversible-addition-fragmentation chain-transfer (RAFT) mechanism. It possesses a thiocarbonylthio group which reacts with propagating radicals to form a dormant intermediate, which then fragments to release a new radical and regenerate the agent. The choice of the R and Z groups on the thiocarbonylthio moiety, C(=S)S-R, determines the agent's reactivity and suitability for specific monomers.",
  "synonyms": [
    "chain-transfer agent (CTA) (in RAFT polymerization)",
    "RAFT agent"
  ],
  "subject": "Polymer",
  "see_also": [
    "chain-transfer agent",
    "reversible-addition-fragmentation chain-transfer polymerization",
    "mediating agent"
  ],
  "references": [
    "PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1125 (https://doi.org/10.1515/pac-2020-1211)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/reversible-addition-fragmentation-chain-transfer-agent/"
}