Chiral tetraphenylethenes as novel dopants for calamitic and discotic liquid crystals
作者:Alina Schreivogel、Ute Dawin、Angelika Baro、Frank Giesselmann、Sabine Laschat
DOI:10.1002/poc.1506
日期:2009.5
Three series of novel chiral tetraphenylethenes have been prepared: citronellyl‐derived ethers 1a, b, lactate‐derived ethers 2d, g, h, i and lactate‐derived esters 3a–c, e–h. Helical twisting powers (HTPs) were determined for those derivatives of 1–3, which were sufficiently miscible with the nematic host 5CB 13 or the discotic nematic host hexayne 14. For binary solutions HTP values of 5.7–10.4 µm−1
制备了三种新的手性四苯基乙烯系列:香茅醛衍生的醚1a,b,乳酸酯衍生的醚2d,g,h,i和乳酸酯衍生的酯3a - c,e - h。螺旋扭转功率(高毒农药)中对这些衍生物确定13,这是足以与所述向列型主体5CB混溶13或盘状向列型主体hexayne 14。对于二元溶液,13 / 1的HTP值为5.7–10.4 µm -1,12.8-16.5微米-1为13 / 2,8.0-28.7微米-1为13 / 3和2.1-2.9微米-1为hexayne 14 / 3进行测定,表明℃之间的更强的相互作用4 -symmetrical propeller-成形tetraphenylethenes 13与calamitc主机5CB 13比具有盘状ç 6 -symmetrical螺旋桨形主机hexayne 14。版权所有©2009 John Wiley&Sons,Ltd.