Design and Integration in Electro-Optic Devices of Highly Efficient and Robust Red-NIR Phosphorescent Nematic Hybrid Liquid Crystals Containing Mo6I8OCOCnF2n 162− n = 1, 2, 3 NanoclustersReport as inadecuate




Design and Integration in Electro-Optic Devices of Highly Efficient and Robust Red-NIR Phosphorescent Nematic Hybrid Liquid Crystals Containing Mo6I8OCOCnF2n 162− n = 1, 2, 3 Nanoclusters - Download this document for free, or read online. Document in PDF available to download.

* Corresponding author 1 FOTON - Fonctions Optiques pour les Technologies de l-informatiON 2 ISCR - Institut des Sciences Chimiques de Rennes 3 OPT - Département Optique 4 IPR - Institut de Physique de Rennes

Abstract : By combining Mo6I8C n F2n+1COO62- n = 1, 2, 3 nanocluster units with liquid crystalline ammonium cations, a new series of hybrid materials is developed that show a nematic liquid crystal phase, the most fluid of all LC phase, on a large range of temperatures including room temperature. The photophysical studies performed in the LC state show that these self-assembled hybrid materials emit in the red-NIR with absolute quantum yields up to 0.7 and show a very good photostability under continuous irradiation. They are further integrated up to 20 wt% in E7, a well-known nematic commercial LC mixture. Mixtures are investigated in terms of homogeneity and stability to select the best suitable candidate for the design of electro-controlled devices. Studies of optical switching, contrast, viscosity, and behavior toward an electrical stimulus demonstrate the high potential of these hybrid materials in the fields of photonic or optoelectronic.

Keywords : hybrid materials liquid crystals photoluminescence electro-optic materials





Author: Marianne Prévôt - Maria Amela-Cortes - Sumann Manna - Ronan Lefort - Stéphane Cordier - Hervé Folliot - Laurent Dupont - Yann

Source: https://hal.archives-ouvertes.fr/



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