Diffusion ordered spectroscopy (DOSY) NMR experiments have been used to characterize a dynamic combinatorial library of helical strands and grid-type metallosupramolecular architectures. The technique allows the deconvolution of very similar chemical structures differing only by their hydrodynamic radius. Moreover, the occurrence of springlike, extension–contraction conformational motions in helical strands can be revealed as a function of the temperature.
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