Issue 32, 2019

Luminescent imidazolium–naphthalene salts in liquid and solid states

Abstract

This article describes highly luminescent ionic compounds in liquid and crystalline states, where a naphthalene moiety is conjugated to an imidazolium center decorated with alkyl chains of different lengths. We have characterized, by X-ray diffraction of a single crystal and the liquid, that these compounds are organized in rod-shaped assemblies. The formation of this molecular architecture is governed by ionic interactions that dominate those of the lesser π–π and van der Waals interactions. Consequently, aromatic naphthalene rings are confined to the environment of alkyl chains (diluted in an apolar solvent), thus avoiding the extinction of luminescence by the formation of chromophore excimers, as shown in photophysical data.

Graphical abstract: Luminescent imidazolium–naphthalene salts in liquid and solid states

Associated articles

Supplementary files

Article information

Article type
Letter
Submitted
07 Jun 2019
Accepted
20 Jul 2019
First published
22 Jul 2019

New J. Chem., 2019,43, 12529-12532

Luminescent imidazolium–naphthalene salts in liquid and solid states

M. L’Her, Y. Atoini, J. Fouchet, B. Heinrich, N. Del-Giudice, E. Scrafton, E. Bordes, L. Karmazin, L. Charbonière, L. De Cola and L. Douce, New J. Chem., 2019, 43, 12529 DOI: 10.1039/C9NJ02972A

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