Abstract
Schiff’s bases with specific π-electron system have been synthesized and used as additives in holographic polymer-dispersed liquid crystals. It was observed that these substances modify different parameters such as current intensity, voltage, and diffracted light intensity. In addition, the maximum diffraction efficiency obtained in the reconstruction of the holograms is related to the additive molecule. We propose a relationship between this behavior and the molecular structure of these substances.
Highlights
The incorporation of liquid crystals (LCs) in photopolymers makes possible to obtain composite materials which can modify their optical properties by means of an electric field
Substances known as Schiff’s bases have been synthesized and used as additives in a holographic photopolymer containing nematic liquid crystal in order to study their possible influence in the optical response of the material [11]
We study whether these substances have an influence on the interaction of the liquid crystal molecules with the external electric field applied to the H-PDLC device
Summary
The incorporation of liquid crystals (LCs) in photopolymers makes possible to obtain composite materials which can modify their optical properties by means of an electric field. Substances known as Schiff’s bases have been synthesized and used as additives in a holographic photopolymer containing nematic liquid crystal in order to study their possible influence in the optical response of the material [11]. We have designed these substances taking into account a size and molecular structure with a delocalized π-electron system similar to those of the liquid crystal molecule. We have added different substituents to the molecule, and this introduces mesomeric and inductive effects which changes the behavior of the electronic delocalization We study whether these substances have an influence on the interaction of the liquid crystal molecules with the external electric field applied to the H-PDLC device
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