Fig. 11.16 (a) Molecular structures of L-/D-15 and PBI and schematic illustration of the fabrication of co-gel composed of L-/D-15 and achiral PBI. Circularly polarized light emission could be
switched by changing acid–base exposure. (b) CPL spectra of protonated co-gels (L-15/PBI and D15/PBI) excited at 447 nm. (c) Intensity of the CPL g lum value of the co-gel L-15/PBI against the
repeated acid–base exposure cycles. The inset pictures are the gel on quartz under a UV lamp.
Reproduced with permission [38]. Copyright 2018, the Royal Society of Chemistry
Fig. 11.17 Left: Schematic illustration of the self-assembly nanohelices formed by 16 and
co-assembly of 16 with a chiral fluorescent molecule (CBS). The chirality, morphology of formed
nanostructures, and induced CPL inversion are triggered by alternating UV irradiation and heating/
cooling. Right: CPL spectra of 16/CBS methanol co-gel under repeated treatment of UV irradiation
and heating/cooling. Reproduced with permission [39]. Copyright 2019, Wiley-VCH
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T. Zhao et al.
switched by changing acid–base exposure. (b) CPL spectra of protonated co-gels (L-15/PBI and D15/PBI) excited at 447 nm. (c) Intensity of the CPL g lum value of the co-gel L-15/PBI against the
repeated acid–base exposure cycles. The inset pictures are the gel on quartz under a UV lamp.
Reproduced with permission [38]. Copyright 2018, the Royal Society of Chemistry
Fig. 11.17 Left: Schematic illustration of the self-assembly nanohelices formed by 16 and
co-assembly of 16 with a chiral fluorescent molecule (CBS). The chirality, morphology of formed
nanostructures, and induced CPL inversion are triggered by alternating UV irradiation and heating/
cooling. Right: CPL spectra of 16/CBS methanol co-gel under repeated treatment of UV irradiation
and heating/cooling. Reproduced with permission [39]. Copyright 2019, Wiley-VCH
268
T. Zhao et al.