Abstract：
Considerable attention has been directed towards cyclodextrins (CDs) in the creation of co-assembled CPL-active materials, owing to their intrinsic chiral host cavities and synergistic host-guest interactions. However, achieving reversed CPL emission regulation with single-handedness CDs moiety poses a significant challenge. In this study, we have devised a series of γ-CD-based host-guest complexes comprising dual pyrene imidazolium derivatives with multiple linkers, which exhibit reversed circularly polarized emission. We have uncovered that the transformation of excimer stacking within γ-CD/pyrene complexes contributes to the inverted CPL emissions originating from a single-handed chiral host. This research elucidates the phenomenom of (+)- and (-)-circularly polarized excimer emission (CPEE) within γ-CD, arising from right- and left-handed stacking conformations, respectively.
摘要：
在共组装的CPL活性材料的创建过程中，已经对环糊精（CD）进行了相当多的关注，由于它们固有的手性宿主腔和协同的宿主-客体相互作用。然而,使用单手CD部分实现反向CPL排放调节提出了重大挑战。在这项研究中,我们设计了一系列基于γ-CD的主体-客体配合物，其中包含具有多个接头的双芘咪唑鎓衍生物，表现出反向圆极化发射。我们已经发现，γ-CD/py配合物中准分子堆积的转化有助于单手性手性宿主产生的反向CPL发射。这项研究阐明了γ-CD中（）和（-）圆极化准分子发射（CPEE）的现象，产生于右手和左手堆叠构象，分别。
