Self-Assembly of π-Conjugated Gelators into Emissive Chiral Nanotubes: Emission Enhancement and Chiral Detection
作者:Xiufeng Wang、Pengfei Duan、Minghua Liu
DOI:10.1002/asia.201301518
日期:2014.3
phenyl and naphthyl self‐assembled into nanotube structures in most organic solvents and showed strong blue emission. However, the 9‐anthryl derivative formed only a nanofiber structure in any organic solvent, probably owing to the larger steric hindrance. All of these gels showed enhanced fluorescence in organogels. Furthermore, during the gel formation, the chirality at the L‐glutamide moiety was transferred
设计了一系列新的π共轭胶凝剂,它们包含各种芳香环(苯基,萘基,9-蒽基)和两亲性L-谷氨酰胺,并研究了它们在有机溶剂和自组装纳米结构中的凝胶形成。胶凝剂在从极性到非极性的各种有机溶剂中均显示出良好的胶凝能力。在大多数有机溶剂中,那些带有小环(如苯基和萘基)的胶凝剂分子会自组装成纳米管结构,并发出强烈的蓝色光。但是,9-蒽衍生物在任何有机溶剂中仅形成纳米纤维结构,这可能是由于较大的位阻所致。所有这些凝胶在有机凝胶中均显示出增强的荧光。此外,在凝胶形成过程中,L的手性谷氨酰胺部分被转移到纳米结构,从而导致手性纳米管的形成。纳米管之一显示出对手性胺的手性识别。