Clustomesogen Showing Sub-Zero Liquid Crystal Properties: Supramolecular Assembly Between Cs<sub>2</sub>[Mo<sub>6</sub>I<sup>i</sup> <sub>8</sub>(OCOC<sub>2</sub>F<sub>5</sub>)<sub>6</sub>] and Hexaethylenoxide Containing Mesogenic Dimers.

Heinz, Killiann; Rebours, Jeanne; Zerrouqi, Zoulikha; Dumait, Noée; Amela-Cortes, Maria; Scheuring, Nikolai; Simonovska, Sara; Marino, Sebastian et al. · Adv Mater · 2026

basic_science · Level V

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Abstract

A phosphorescent molybdenum octahedral cluster compound is homogeneously associated with organic liquid crystals by means of weak supramolecular interactions up to a doping concentration of 45.8 wt.%. Polarized Optical Microscopy, Differential Scanning Calorimetry, and X-ray Scattering experiments demonstrate that such class of new compounds shows a calamitic liquid crystal-like behavior at low temperature, even below 0°C. Photophysical studies reveal a strong emission in the red-NIR with a high oxygen sensitivity. This first of its kind material offers promising perspectives in the field of optoelectronics, sensing, and photonics.