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Article Abstract
Developing stimuli-responsive circularly polarized luminescence (CPL) materials that feature fast emission color switching for advanced information encryption presents a scientifically significant yet formidable challenge. Herein, we construct a supramolecular co-assembly system demonstrating transiently responsive CPL emission color switching, enabling mechanically-modulated information encryption. Combining a highly luminescent Pt(II) liquid crystal (Pt8) with the anchored binaphthyl inducers (/-M) forms chiral co-assemblies (/-M)-(Pt8), which assemble into twisted nanobelts (180 °C) and helical nanofibers (260 °C) exhibiting green ( = 545 nm, = 0.038) and red CPL ( = 640 nm, = 0.133), respectively. Notably, mechanical grinding transforms the 180 °C-annealed (/-M)-(Pt8) into nanoparticles, resulting in a fast dynamic switching of CPL emission color from green to orange-red ( : 545 → 625 nm, : 0.038 → 0.058). Reheating the grinding films (/-M)-(Pt8) to 180 °C restores the initial green CPL of the nanobelts. Based on the fast CPL emission color switching, we demonstrate the applications of these supramolecular chiral co-assemblies for mechanically-modulated information encryption.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12093386 | PMC |
| http://dx.doi.org/10.1039/d5sc02285a | DOI Listing |
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