CAJ | 학술논문

合成了外围含4-丁氧基偶氮苯介晶基元的三代硅碳烷液晶树状物PCSi-3G-C4.以4-[4-(6-羟基已氧基)苯基]丁氧基偶氮苯介晶基团对端基官能团为Si-Cl的三代硅碳烷树状物PCSi-3G-Cl脚手架进行功能化,并利用元素分析、红外光谱(IR)、核磁共振(NMR)、偏光显微镜(POM)、差示扫描量热法(DSC)对其结构与液晶性进行表征.结果表明,与对应的液晶基元相似PCSi-3G-C4显示向列相,但二者在熔点、清亮点和液晶态温区等方面存在一定差异.
합성료외위함4-정양기우담분개정기원적삼대규탄완액정수상물PCSi-3G-C4.이4-[4-(6-간기이양기)분기]정양기우담분개정기단대단기관능단위Si-Cl적삼대규탄완수상물PCSi-3G-Cl각수가진행공능화,병이용원소분석、홍외광보(IR)、핵자공진(NMR)、편광현미경(POM)、차시소묘량열법(DSC)대기결구여액정성진행표정.결과표명,여대응적액정기원상사PCSi-3G-C4현시향렬상,단이자재용점、청량점화액정태온구등방면존재일정차이.
Liquid crystalline dendrimer of the third generation PCSi-3G-C4, with 4-butoxyazobenzene mesogenic groups on the periphery has been prepared. A terminal Si-Cl functional carbosilane dendrimer of the third generation PCSi-3G-Cl based on pentaerythritol was used as dendritic scaffold and was subsequently functionalized with 4-[4-(6-hydroxyhexyloxy)phenylazo]butoxybenzene groups (M-C4). Investigation of the liquid crystalline properties by polarized optical microscopy (POM) and differential scanning calorimetry (DSC) showed that, similar to the corresponding mesogenic moiety, the mesogen-functionalized dendrimer exhibits nematic phase.