Zero-dimensional halide hybrid bulk glass exhibiting reversible photochromic ultralong phosphorescence

Zero-dimensional halide hybrid bulk glass exhibiting reversible photochromic ultralong phosphorescence

29 June 2024 | Fei Nie & Dongpeng Yan
This study presents a zero-dimensional organic-inorganic halide hybrid glass doped with 4,4′-bipyridine, capable of reversible photochromism and ultralong phosphorescence. The glass is fabricated through a grinding-melting-quenching process, resulting in large-scale, transparent materials. The incorporation of 4,4′-bipyridine enhances the glass's photochromic properties, allowing it to change color from colorless to dark blue upon UV irradiation, with a subsequent recovery to its original state. The glass exhibits persistent luminescence, which can be regulated by photo-generated radicals. Notably, the glass shows circularly polarized luminescence due to the aggregation-induced chirality effect, with an optical dissymmetry factor (gsum) of up to 10−2. These properties make the glass suitable for applications such as three-dimensional optical storage, rewritable photo-patterning, and multi-mode anti-counterfeiting. The study introduces a versatile platform for advanced photonic applications, leveraging the dynamic ultralong phosphorescence and photochromic characteristics of the hybrid glass.This study presents a zero-dimensional organic-inorganic halide hybrid glass doped with 4,4′-bipyridine, capable of reversible photochromism and ultralong phosphorescence. The glass is fabricated through a grinding-melting-quenching process, resulting in large-scale, transparent materials. The incorporation of 4,4′-bipyridine enhances the glass's photochromic properties, allowing it to change color from colorless to dark blue upon UV irradiation, with a subsequent recovery to its original state. The glass exhibits persistent luminescence, which can be regulated by photo-generated radicals. Notably, the glass shows circularly polarized luminescence due to the aggregation-induced chirality effect, with an optical dissymmetry factor (gsum) of up to 10−2. These properties make the glass suitable for applications such as three-dimensional optical storage, rewritable photo-patterning, and multi-mode anti-counterfeiting. The study introduces a versatile platform for advanced photonic applications, leveraging the dynamic ultralong phosphorescence and photochromic characteristics of the hybrid glass.
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Understanding Zero-dimensional halide hybrid bulk glass exhibiting reversible photochromic ultralong phosphorescence