Abstract
In order to meet the different demands of the LCD matrix,a serious of 1,2,4-oxadiazoles compounds was synthesized.These compounds were synthesized from aryl iodides through three steps.Their constructions were confirmed by NMR,FT-IR and elemental analysis.The parameters and the performances of these compounds were measured by POM and DSC.Some of these 1,2,4-oxadiazoles compounds not only have small optical anisotropy(Δn = 0.107~0.118)and large negative dielectric anisotropy(Δe =-1.6 ~-4.3),but also have a wide nematic phase temperature range.These compounds can be used in the LCD matrix to improve partial performance of the LCD. The preparation method is of simple operation and low cost,which can also realize industrialization easily.
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