Unperturbed end-to-end distance

{
  "id": "MLC-T-CHM-012448",
  "term": "Unperturbed end-to-end distance",
  "field": "Chemistry",
  "definition": "The average distance between the two ends of a polymer chain when it is in an unperturbed conformational state, typically in a theta solvent. In this state, the effects of excluded volume are negligible, and the chain behaves as an ideal random coil. It is a measure of the overall size of the polymer coil under conditions where long-range interactions are screened.",
  "subject": "Polymer",
  "see_also": [
    "unperturbed end-to-end vector"
  ],
  "references": [
    "PAC, 2015, 87, 71. 'Definitions of terms relating to individual macromolecules, macromolecular assemblies, polymer solutions, and amorphous bulk polymers (IUPAC Recommendations 2014)' on page 76 (https://doi.org/10.1515/pac-2013-0201)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/unperturbed-end-to-end-distance/"
}