Bulkiness as a design element to increase the rigidity and macrodipole of supramolecular polymers
Résumé
N,N′-dialkyl ureas in non-polar solvents self-assemble as hydrogen bonded chains. Infrared and dielectric spectroscopy show that more sterically crowded monomers form shorter chains but also larger macrodipoles. This unexpected effect is due to the enhanced rigidity of the bulky assemblies, as confirmed by molecular dynamics simulations.
Domaines
Chimie
Fichier principal
Bernardino et al. - 2019 - Bulkiness as a design element to increase the rigi.pdf (500.69 Ko)
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