Exploring the Role of Vanillic Acid in Liquid Crystal Applications: A Review
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Abstract
Vanillic acid, a naturally occurring phenolic acid found in various plant sources such as vanilla beans and certain fruits, has recently gained interest as a precursor for synthesizing liquid crystals. With its phenolic hydroxyl group and methoxy substitution on the aromatic ring, vanillic acid offers multiple functionalization opportunities that can lead to the formation of liquid crystalline structures. The ease of chemical modification and the environmentally friendly nature of vanillic acid make it a promising compound for creating novel LC materials. This review provides an overview of the advancements in vanillic acid-based liquid crystals. It explores the chemical strategies used to transform vanillic acid into mesogenic compounds, the resulting liquid crystalline phases, and their properties. Furthermore, we examine the thermal, optical, and mechanical behaviors of these materials and highlight their potential applications. Given the growing need for sustainable materials, vanillic acid-based liquid crystals offer an exciting new direction for academic research and practical applications.
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