Mean-square unperturbed end-to-end distance

{
  "id": "MLC-T-CHM-007087",
  "term": "Mean-square unperturbed end-to-end distance",
  "field": "Chemistry",
  "definition": "The average of the square of the distance between the ends of a polymer chain in a theta solvent, where polymer-solvent and polymer-polymer interactions effectively cancel out. This value represents the intrinsic size of the polymer chain in the absence of long-range excluded volume effects. It is a characteristic property of the polymer chain architecture.",
  "subject": "Polymer",
  "see_also": [
    "effective bond length",
    "rotational isomeric state"
  ],
  "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/mean-square-unperturbed-end-to-end-distance/"
}