三聚磷腈为核的酰胺星型化合物的合成及其液晶行为的研究  

Synthesis and their liquid crystalline behavior of cyclotriphosphazene based acidamide-containing star-shaped compound

作　　者：杨丽娜[1] 高建峰[1] 周光强[1] 杨宁[1] 韩亚晓[1] 

机构地区：[1]中北大学理学院化学系,太原030051

出　　处：《化工新型材料》2012年第11期85-87,共3页New Chemical Materials

摘　　要：以对羟基苯甲酸、乙酸酐合成对乙酰氧基苯甲酸;然后对乙酰氧基苯甲酸、对氨基苯酚通过酰化反应合成酰胺化合物;酰胺化合物再与六氯环三聚磷腈发生亲核取代反应生成以三聚磷腈为核的酰胺星型化合物。通过红外光谱对化合物的结构进行了表征,并利用偏光显微镜和DSC测试目标产物的液晶性能。结果表明:六氯环三聚磷腈的氯原子已全部被取代;液晶基元为向列型碎片状织构,星型化合物为向列型花束状织构;液晶基元和星型化合物的液晶相范围分别为85～130℃、100～168℃,星型化合物的清亮点和液晶相变范围均比液晶基元的高,此星型化合物有望在液晶材料中得到应用。4-acetory benzoic acid was synthetized through using p-hydroxybenzoic acid and acetic anhydride,then a polymer was synthesized through acylation reaction using 4-acetory benzoic acid and amino phenol.Finally,through nucleophilic replace reaction the star-shaped compound with cyclotriphosphazene was synthetized by using amide and cyclotriphosphazene.The structures of these compounds were characterized by IR.The phase behaviors were observed by differential scanning calorimeter（DSC）and polarization microscope（POM）.The results showed that the phosphorus atoms of cyclotriphosphazene were replaced by the liquid crystal element with amide.The liquid crystal element was the type of fragmentry nematic liquid crystalline,and the star-shaped compound was cluster state.The temperature of liquid crystalline phase of liquid crystal element was 85℃~130℃,and the temperature of the star-shaped compound was 100℃~168℃.The clearing point and temperature of liquid crystalline phase of the star-shaped compound were both higher than those of the liquid crystal element.This star compound was expected to be applied in the liquid crystal materials.

关 键 词：三聚磷腈 酰胺化合物 液晶 织构 星型化合物 

分 类 号：O621.3[理学—有机化学]