Recent Progress in Chiral Materials with Induced Circularly Polarized Luminescence

Because circularly polarized luminescence(CPL) has unique properties including extensive optive information, large-capacity optical information and angular independence, chiral materials with CPL emission present increasing potential for applications in diverse fields such as storage of information, bio-encoding, 3D optical displays and even catalysts for asymmertirc photochemical synthesis. As an important approach, supramolecualar self-assembly can provide a convenient method to construct the CPL materials by introducing chiral source and achiral fluorescent moleculars into the supramolecular system through different nocovalent interactions (such as π-π stacking, electrostatic interactions and hydrogen bonding). The chiral arrangement of the luminescent units in the assembly plays a key role in controlling the CPL emission (including the intensity and sign) of such materials. Although the study of CPL materials lasts several years, an open question that has long been a point of concention is how to achieve the high performance CPL materials. A high degree of dissymmetry ratio is also the urgent challenge. Therefore, it is vital to develop effective ways for the CPL materials with the high dissymmetry factor. In this review, we focus on the present progress on the chiral materialswith induced CPL emission by using template including chiral gel nanotube, mesoporous template, liquid crystalline polymer and helix formed by polymer. The dissymmetric factor and luminescent intensity of the obtained CPL materials in different assemblies were intensively discussed depending on different templates. We also present some perspective on the development of the induced CPL materials and the future application.