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首页> 外文期刊>Der Pharma Chemica: journal for medicinal chemistry, pharmaceutical chemistry and computational chemistry >Mesomorphic properties of a new homologous series: 2-(4a??-Nalkoxy benzoyloxy)-naphthyl-1-azo-4a??a??-nitro benzenes
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Mesomorphic properties of a new homologous series: 2-(4a??-Nalkoxy benzoyloxy)-naphthyl-1-azo-4a??a??-nitro benzenes

机译:一个新的同源系列的介晶性质:2-(4a ??-烷氧基苯甲酰氧基)-萘-1-偶氮-4a ?? a ??-硝基苯

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摘要

New homologous series with -COO- and -N=N- as central group have been synthesized by the treatment of 4-n-alkoxy benzoyl chloride with 2-Hydroxy - naphthyl – 1 – azo – 4’ – nitro benzene. All the homologues of the series are enantiotropically nematogenic without exhibition of smectic mesophase. The texture of nematic mesophase is of threaded type. Well known odd-even effect is clearly observed in the nematic isotropic transition curve. Thermal stabilities and liquid crystalline properties are compared with other structurally identical homologous series. Transition temperatures are observed through hot stage polarizing microscope. Analytical data support the structure of molecules.
机译:通过用2-羟基-萘基– 1 –偶氮– 4’–硝基苯处理4-n-烷氧基苯甲酰氯,合成了以-COO-和-N = N-为中心基团的新同源系列。该系列的所有同系物都具有对映线虫性,而没有近晶中间相的表现。向列中间相的织构是螺纹型的。在向列各向同性过渡曲线中清楚地观察到众所周知的奇偶效应。将热稳定性和液晶性质与其他结构相同的同源序列进行比较。通过热台偏振显微镜观察转变温度。分析数据支持分子的结构。

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