Synthesis and self-assembly of oligomers containing cruciform 9,10-bis(arylethynyl)anthracene unit: formation of supramolecular nanostructures based on rod-length-dependent organization
作者:Jikai Zhu、Keli Zhong、Yongri Liang、Zhuoshi Wang、Tie Chen、Long Yi Jin
DOI:10.1016/j.tet.2013.12.072
日期:2014.2
molecules, incorporating flexible and rigid blocks, have a strong affinity to self-organize into various supramolecular nanostructures in the bulk state.In this study, we report synthesized oligomers containing cruciform 9,10-bis(arylethynyl)anthracene units and characterized their self-assembly behavior. The molecular structures were characterized with 1H, 13C NMR, and matrix-assisted laser desorption
结合了柔性和刚性嵌段的共轭棒-螺旋分子具有很强的亲和力,可以自组织成块状的各种超分子纳米结构。在这项研究中,我们报道了含有十字形的9,10-双(芳乙炔基)蒽单元和表征了他们的自组装行为。分子结构的特征是1 H,13C NMR和基质辅助激光解吸电离飞行时间(MALDI-TOF)质谱。使用差示扫描量热法,热偏振光学显微镜和小角X射线散射对这些分子的超分子纳米结构进行研究后发现,具有相同的棒-线圈体积比的线圈-棒-线圈分子的棒长会显着影响自批量状态下的装配行为。具有较长杆长的分子2和3在固态时会自组装成层状结构,而分子1和4在液晶相时会自组装成二维(2-D)倾斜柱状结构,加热时,分子1 从倾斜的柱状相转变为向列相。