Supramolecular Organization of [TeCl] with Ionic Liquid Cations: Studies on the Electrical Conductivity and Luminescent Properties.

A series of hybrid tellurium chlorides based on ionic liquids (ILs), namely, α-[Bmim]TeCl (1, Bmim = 1-butyl-3-methyl imidazolium), β-[Bmim]TeCl (2), [HOOCMim]TeCl (3, HOOCMim = 1-carboxymethyl-3-methyl imidazolium), [Bzmim]TeCl (4, Bzmim = 1-benzyl-3-methyl imidazolium), [EPy]TeCl (5, EPy = 1-ethylpyridinium), [Bmmim]TeCl (6, Bmmim = 1-butyl-2,3-dimethyl imidazolium), have been synthesized and characterized. Different kinds of supramolecular networks have been obtained via self-assemblies of isolated [TeCl] anions and various ionic liquid cations. Interestingly, all the title compounds exhibit semiconducting behaviors: their optical absorption edges calculated from reflectance spectra are in the range of 2.