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Fluorosumanenes as Building Blocks for Organic Crystalline Dielectrics by Yumi Yakiyama; Minghong Li; Hidehiro Sakurai is a Chemistry article available to read on EtoBox.

What is Fluorosumanenes as Building Blocks for Organic Crystalline Dielectrics about?

Abstract Organic crystalline dielectric materials are attractive target in the field of materials chemistry. In their designing strategy, the molecular motion induced by the external dielectric field is required to maximize the polarization effect in the materials to realize a large dielectric constant. Especially, the molecular motion of curved-π aromatics such as C60 and their supramolecular complexes are the known to show characteristic smoothness in the solid state. In this context, we focused on the in-plane motion of the one of the representative buckybowl, sumanene (Sum) in its curve-to-curve-contacted columnar structure as the new platform of the motion for the emergence of dielectric response. The newly designed and synthesized fluorinated sumanene, 1,1-difluorosumanene (F2-Sum), which possesses two fluorine atoms on the same benzylic carbon of pristine sumanene showed a large dipole moment along the in-plane direction. Thermal analyses, variable temperature X-ray diffraction and IR measurements indicated the presence of in-plane motion of F2-Sum although no clear phase transition was involved. This thermal property of F2-Sum realized an anisotropic dielectric response wit

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Author

Yumi Yakiyama; Minghong Li; Hidehiro Sakurai

Publisher

Walter de Gruyter GmbH

Published

2023

Language

EN

Field

Chemistry (Physical Sciences)