樟脑酸为手性中心苯酯苯类液晶的制备与性能研究VIP专享VIP免费

摘要手性侧链液晶材料由于特殊螺旋结构的存在使其具有独特光电的性质，在生物医学能源、光学、显示等众多领域中具有巨大的潜在应用价值。手性液晶弹性的性质受手性液晶交联剂性质的影响，因此合成新型的手性液晶交联剂具有重要的研究意义。本研究以樟脑酸为手性中心，经过成醚成酯反应，制备一种新型的手性液晶交联剂4-(4-烯丙氧基)苯甲酰氧基-4'-羟基苯樟脑酸双酯。采用红外光谱分析仪(FTIR)和核磁共振氢谱(1H-NMR)对手性液晶交联剂的化学结构进行了测试，结果表明所制备的液晶交联剂在结构上符合分子设计。采用偏光显微镜(POM)单体的液晶织构进行了观察，观察结果表明单体为胆甾相液晶。采用差示扫描量热仪(DSC)对液晶单体的液晶性能进行了研究，测试结果表明该单体具有较宽的液晶相区间，在制备新型手性液晶弹性体的研究中具有较好的应用价值。关键词：液晶；交联剂；手性；液晶弹性体AbstractChiralliquidcrystalelastomershavebeenextensivelystudiedinthefieldofmaterialsinconsequenceoftheiruniquecharacteristicsoriginatedfromtheatomicchiralcentersandhelicalconformations,whichmakethempromisingforapplicationsindisplays,solar-energyharvesting,opticsandphotonics,andbiomedicine.Thepropertiesofchiralliquidcrystalelastomersaregreatlyaffectedbythecrosslinkingagentsofchiralliquidcrystal.Inthisstudy,III4-hydroxyphenyl-4'-allyloxybenzoatecamphoricaciddiesterwassynthesizedbyether-esterreaction.ThroughtheFTIRand1H-NMRtostudythechemicalstructureandliquidcrystalpropertiesofthecrosslinkingagent,theresultsindicatethatthestructureoftheliquidcrystalcrosslinkingagentaccordswiththemoleculardesign.ThroughtheDifferentialscanningcalorimeter(DSC)andPOMtoanalyzethetextureandthecharacteristicsofthecrosslinkingagent.Experimentalresultindicatesthatthecrosslinkingagentisacholestericphasewithawideliquidcrystalphaserangeandithasagoodapplicationvalueinthesynthesizeofnovelchiralliquidcrystalelastomers.Keywords:liquidcrystal;crosslinkingagent;chiral;liquidcrystalelastomers目录1引言--------------------------------------------------------------------12实验部分---------------------------------------------------------------12.1药品与试剂-------------------------------------------------------------12.2仪器及测试手段---------------------------------------------------------22.3手性液晶交联剂的合成---------------------------------------------------22.3.14-烯丙氧基苯甲酸的合成................................................32.3.24-烯丙氧基苯甲酰氯的合成.............................................32.3.34-(4-烯丙氧基)苯甲酰氧基-4'-羟基苯的合成.............................32.3.4樟脑酸酐的合成........................................................42.3.54-(4-烯丙氧基)苯甲酰氧基-4'-羟基苯樟脑酸单酯的合成...................42.3.64-(4-烯丙氧基)苯甲酰氧基-4'-羟基苯樟脑酸单酯酰氯的合成...............42.3.7交联剂4-(4-烯丙氧基)苯甲酰氧基-4'-羟基苯樟脑酸双酯的合成.............43结果与讨论-------------------------------------------------------------43.1结构分析---------------------------------------------------------------43.1.1中间体及手性液晶交联剂的红外分析.....................................43.1.2手性交联剂的核磁分析.................................................73.2手性交联剂的热性能分析-------------------------------------------------83.3手性液晶交联剂织构分析-------------------------------------------------94结论------------------------------------------------------------------10参考文献-----------------------------------------------------------------11致谢-------------------------...