The influence of hydrogen bonding and π–π stacking interactions on the self-assembly properties of C3-symmetrical oligo(p-phenylenevinylene) discs
作者:Jeroen van Herrikhuyzen、Pascal Jonkheijm、Albertus P. H. J. Schenning、E. W. Meijer
DOI:10.1039/b517993a
日期:——
bipyridine disc, aggregates were formed that show little chiral ordering while the stacks remain present over a large temperature range. At a surface, completely disordered structures exist probably as a result of competing types of pi-pi stacking interactions that differ in strength and orientation. The results show that the design of functional self-assembled architectures based on hydrogen bonding and pi-pi
合成并充分表征了三种含有被pi共轭低聚(对亚苯基亚乙烯基)(OPV)功能化的1,3,5-苯三甲酰胺单元的C3对称圆盘片。对于两个酰胺OPV圆盘,观察到从螺旋堆叠到分子溶解物质的两步过渡,令人惊讶的是,酰胺的拓扑决定了溶液中纤维的稳定性和螺旋度以及表面纤维的长度。在联吡啶盘的情况下,形成的聚集体显示出很少的手性有序性,而叠层在较大的温度范围内保持存在。在表面上,完全无序的结构可能是由于强度和方向不同的pi-pi堆叠相互作用的竞争类型而导致的。