Matthias Lehmann, Nikolai Scheuring, Loïc Mager, Dharmendra Pratap Singh, Richard Mandle, Alexey Eremin
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引用次数: 0
Abstract
A roof-shaped molecule forming exclusively a nematic liquid crystal phase is prepared based on a lead structure. The aspect ratio is designed to be almost optimum with respect to the molecular biaxiality. A broad nematic phase over more than 100 K is observed in which a weak, transient biaxial alignment can be induced under specific thermal and mechanical conditions. In sandwich cells, TOF electron mobilities of up to 2.2 × 10-2 cm2 V-1 s-1 are obtained, which are the highest found to date for nematic materials. The latter is attributed to the special self-assembly of the biaxial, roof-shaped mesogens, which favors the contacts between the aromatic units, which is confirmed by X-ray scattering, modeling, and X-ray scattering simulation. The material is responsive to the applied electric field, which results in the anomalous negative field dependence of the charge carrier mobilities.
期刊介绍：
Advanced Science is a prestigious open access journal that focuses on interdisciplinary research in materials science, physics, chemistry, medical and life sciences, and engineering. The journal aims to promote cutting-edge research by employing a rigorous and impartial review process. It is committed to presenting research articles with the highest quality production standards, ensuring maximum accessibility of top scientific findings. With its vibrant and innovative publication platform, Advanced Science seeks to revolutionize the dissemination and organization of scientific knowledge.
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