Relaxation of a single chain molecule in good solvent conditions by molecular-dynamics simulation

The dynamic relaxation of various structural properties of a single freely jointed N-mer (N=6,9,30) in explicit solvent at relatively high dilution is investigated by molecular dynamics. In the large-k region, the normalized intermediate scattering function I(k,t) appears to be a universal function of ${\mathit{tk}}^{\mathit{x}}$ with x=2.9±0.1, in good agreement with experiments and close to the prediction of the Zimm model (x=3).