School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China.
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, Nanophotonics Research Division, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China.
Adv Mater. 2017 May;29(19). doi: 10.1002/adma.201606503. Epub 2017 Mar 10.
Circularly polarized luminescent (CPL) materials are currently attracting great interest. While a chiral building is usually necessary in order to obtain CPL materials, here, this study proposes a general approach for fabricating 1D circularly polarized luminescent nanoassemblies from achiral aromatic molecules or aggregation-induced emissive compounds (AIEgens). It is found that a C symmetric chiral gelator can individually form hexagonal nanotube structures and encapsulate the guest molecules. When achiral AIEgens are encapsulated into the confined nanotubes via organogelation, the AIEgens will emit circularly polarized luminescence. Further, the direction of the CPL could be controlled by the supramolecular chirality of the nanotube. Remarkably, the approach is universal and various kinds of the AIEgens can be doped to show such property, providing a full-color-tunable circularly polarized luminescence.
圆偏振发光（CPL）材料目前引起了极大的关注。虽然获得 CPL 材料通常需要手性构建，但本研究提出了一种从非手性芳香族分子或聚集诱导发光化合物（AIEgen）制备一维圆偏振发光纳米组装体的通用方法。研究发现，具有 C 对称手性凝胶因子的可以单独形成六方纳米管结构并包裹客体分子。当非手性 AIEgen 通过有机凝胶化封装到受限的纳米管中时，AIEgen 将发射圆偏振发光。此外，CPL 的方向可以通过纳米管的超分子手性来控制。值得注意的是，该方法具有普遍性，各种 AIEgen 可以被掺杂以显示这种性质，提供全彩可调圆偏振发光。
