摘要
首次报道了可作为点击逐步聚合单体、具有不同长度间隔链的末端炔基偶氮苯类化合物的合成。首先以对羟基苯甲酸与苯酚反应制备偶氮苯原料化合物,然后以3-溴丙炔与二醇类化合物制备不同长度的末端炔基间隔链,通过其对偶氮苯原料化合物的修饰制备目标产物。所得目标产物化学结构经1HNMR、13CNMR、FT-IR、元素分析和质谱确证。利用示差扫描量热法(DSC)及偏光显微镜(POM)研究其相转变性能,结果表明,通过改变化合物间隔链长度可以调节其相转变性能,包括相变温度及液晶性能。
Alkyne-terminated azobenzene compounds with dif- ferent length of spacer chains, which may used as monomers for click step-polymerization, were synthesized. In detail, an azobenzene raw material was prepared via the reaction of 4- aminobenzoic acid and phenol. Modification of the azobenzeneraw material with alkyne-terminated spacers derived from the reaction of 5-bromobutyne and different alkyl glycols gave the title compounds. The structure of the title compounds were confirmed by ~HNMR, ~3CNMR, FT-IR, elemental analysis and mass spectrum. The phase transition behavior was investi- gated by differential scanning calorimetry （ DSC ） and polar- ized optical microscopy. The results indicated that phase-tran- sition temperature and liquid crystalline nature could be mod- ulated via altering the length of spacers in these compounds.
出处
《化学试剂》
CAS
CSCD
北大核心
2013年第5期391-395,416,共6页
Chemical Reagents
基金
天津市自然科学基金资助项目(10JCYBJC02100)
关键词
偶氮苯化合物
相转变
示差扫描量热法(DSC)
azobenzene compound
phase transition behavior
differential scanning calorimetry
