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- W4307821550 abstract "Abstract Circularly polarized luminescence (CPL) enabled by chiral self‐assembly is very promising in diversified applications. However, temperature‐triggered disassembly or self‐assembly transition often results in reduction or even silence of CPL. Here, a strategy of coordinating self‐assembly is reported that offers temperature enhanced and retainable CPL that is resistant to further temperature variation. Upon co‐assembling commercial dyes with the coordinating hydrogel of cholate‐calcium, the chirality transfer from cholate to the dyes allows generation of CPL. With increasing temperature, the CPL intensity can be enhanced 4 times and the emission dissymmetry factor g em can be promoted from 0.04 to 0.1, then they remain stable either upon further elevating or lowering temperature. Mechanism study reveals that increasing temperature has triggered the coordination transition between the carbonate groups and Ca 2+ from the metastable bidentate chelating to the thermal stable bridging mode, which drives the transition from flexible nanohelices to stiff helical bunches. This promotes the alignment of the dyes and in the meantime decreases its mobility, thus leads to increased CPL intensity and g em . It is envisioned that the strategy of coordinating self‐assembly would be very promising in creating thermally stable CPL for diversified applications." @default.
- W4307821550 created "2022-11-06" @default.
- W4307821550 creator A5017026939 @default.
- W4307821550 creator A5027558567 @default.
- W4307821550 creator A5031728457 @default.
- W4307821550 creator A5040469684 @default.
- W4307821550 creator A5049175777 @default.
- W4307821550 creator A5049444908 @default.
- W4307821550 creator A5071996875 @default.
- W4307821550 creator A5087239185 @default.
- W4307821550 date "2022-10-28" @default.
- W4307821550 modified "2023-10-17" @default.
- W4307821550 title "Unprecedented Thermo‐Enhanced Retainable Circularly Polarized Luminescence" @default.
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