A Supramolecular Chiroptical Switch Exclusively from an Achiral Amphiphile

Authors

  • P. Guo,

    1. CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100080, P.R. China
    2. Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100080, P.R. China
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  • L. Zhang,

    1. CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100080, P.R. China
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  • M. Liu

    1. CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100080, P.R. China
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  • This work was supported by the NSFC (20273078 and 90306002), the Major State Basic Research Development Program (G2000078103), and the fund from the Chinese Academy of Sciences.

Abstract

original image

Although amphiphilic TARC18 is achiral (Figure, left), it can form chiral Langmuir–Schaefer (LS) films upon organization of the molecules at the air/water interface. Moreover, the chirality of the film can be switched off and recovered by alternatively exposing the film to HCl gas and air (Figure, right; CD: circular dichroism). The process can be repeated more than ten times in the film state.

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