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Updated: Jun 18, 2026

MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups
Published on: October 3, 2025
Molecular weights of cyclic and hollow clusters measured by DOSY NMR spectroscopy
Sébastien Floquet1, Sébastien Brun, Jean-François Lemonnier
1Institut Lavoisier de Versailles, UMR 8180, University of Versailles Saint-Quention en Yvelines, 45 Avenue des Etats-Unis, 78035 Versailles, France. sebastien.floquet@chimie.uvsq.fr
Abstract:
The Stokes-Einstein expression of the diffusion coefficient as a function of the hydrodynamic radius of the diffusing object does not explicitly carry the mass dependency of the object. It is possible to correlate the translational self-diffusion coefficients D with the molecular weight M for an ensemble of cyclic or hollow clusters ranging from about 200 to 30,000 g x mol(-1). From this correlation, the mass of a cluster can be deduced from its diffusion coefficient. Consistency of diffusion as a power law of mass and Stokes-Einstein formulation is completely fulfilled with the selected compounds of this contribution.
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