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Updated: May 23, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
New experimental evidence supporting the mesoscopic segregation model in room temperature ionic liquids
Olga Russina1, Alessandro Triolo
1Dipartimento di Chimica, Sapienza Università di Roma, Piazzale Aldo Moro 5, 1-00185 Roma, Italy. olga.russina@uniromal.it
Abstract:
The existence of a high degree of order over the mesoscopic spatial scale in room temperature ionic liquids is one of their most intriguing properties. Recently the possibility that such a feature, that is witnessed by the occurrence of peculiar low Q diffraction features, reflects nm-scale structural organization has been questioned on the basis of both experimental and computational studies. In this contribution we discuss these studies and present novel experimental evidence that confirm the existence of nm-scale spatial heterogeneities due to the segregation of apolar moieties dispersed in a polar network. The consequence of this scenario is that when the chain polarity gets closer to that of the charged head, the structural heterogeneities are no longer observed.
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