Abstract
The design and synthesis of columnar liquid crystals with high fluorescence at aggregated states (eliminating the ACQ effect) was an important challenge in the field of liquid crystalline materials. In this work, the first rufigallol columnar liquid crystals with AIE groups were prepared and exhibited good fluorescence in aggregated states. A series of diphenylacrylonitrile-rufigallol-diphenylacrylonitrile trimers was designed and prepared in 70–78% yields. They showed the ordered hexagonal columnar liquid crystals based on the induction of planar rufigallol structures. They also exhibited the good fluorescence in aggregated states with the fluorescence quantum yields of 0.21–0.26 based on the AIE effect of diphenylacrylonitrile units. The length of bridging alkyl chains between rufigallol and diphenylacrylonitrile units contributed to decrease the mesophase transition temperature and increase the fluorescence quantum yields.
Published Version
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