Participating Group (2020-2021)
Development of Elastomer-wrapping Soft CPL Material with Solid Stimulus Response Characteristics
Luminescent systems emit circularly polarized luminescence (CPL) in two forms, producing left or right rotation. The aim of this research is to develop a soft CPL material by doping a luminophore into a functional elastomer polymer having thermoplasticity and molding specificity. External stimuli (heating, stretching, magnetic field, etc.) trigger chiral arrangement of fluorescent units to realize CPL switching, memory, amplification, erasing, and CPL wavelength tuning. (1) Excimer soft CPL materials are prepared by doping chiral luminophores composed of chiral and fluorescent units into an elastomer. By subjecting this elastomer to the proper stimulus, we control the resulting spatial arrangement of fluorescent units and realize a functional soft CPL material. (2) A magnetic field-responsive soft CPL material is prepared by doping an elastomer with an achiral luminophore having magnetic field response characteristics. The magnetic field controls the direction of the transition moment, constraining the amplification and rotation direction of the CPL.