Optically Active Liquid Crystalline Polyoxometalates via Electrostatic Encapsulation with Cholesterol‐Containing Amphiphile |
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| Authors: | Dr. Jing Zhang Jingfang Li Hong Yuan Guohua Zhang Dr. Bao Li Prof. Wen Li Prof. Xuehong Wei Dr. Xin‐E Duan Prof. Lixin Wu |
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| Affiliation: | 1. Institute of Applied Chemistry, Shanxi University, Taiyuan, China;2. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, China;3. College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, China |
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| Abstract: | A novel cholesterol‐containing amphiphile was designed and prepared in the study, which is a room‐temperature ionic liquid crystal over a broad temperature range with pronounced chiroptical properties. Four types of inorganic polyoxometalates (PMs) with different numbers of charges were encapsulated by the chiral amphiphile. The incorporation of chiral organic cations triggers achiral PMs in the complexes to show induced chirality through intermolecular interactions, as demonstrated by circular dichroism spectroscopy. The electrostatic encapsulation with mesomorphic promoters provides the inorganic PMs with liquid crystalline behavior, characterized by differential scanning calorimetry, polarized optical microscopy, and X‐ray diffraction. The strategy applied herein represents a unique example of liquid crystalline PM complexes with optical activity. |
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| Keywords: | amphiphiles liquid crystals optical activity polyoxometalates supramolecular self-assembly |
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