Glass, a diverse family of amorphous materials, has significantly advanced human society across various fields. The demand for flexible ultrathin glass, driven by modern optical displays and portable optoelectronics, presents challenges in energy consumption, fabrication complexity, and recycling. Here, we demonstrate flexibility and full-color luminescence in large-scale ultrathin glasses derived from readily available natural resources, specifically egg albumen (EA) and gelatin (GEL), via an evaporation-driven self-assembly process. The dynamic crosslinked networks formed through hydrogen bonding between EA and GEL impart both high hardness and flexibility to the glasses, with hardness and flexural strength values comparable to state-of-the-art inorganic and organic glasses. Additionally, the EA–GEL-based glasses exhibit excitation-dependent and time-gated chiral ultralong phosphorescence with color from blue and red, and a lifetime of up to 180.4 ms. With their easy processability and full-color emission, these biogenic glasses can be fabricated into anti-counterfeiting patterns and optical information codes.

玻璃是多种非晶态材料，在各个领域都极大地推动了人类社会的发展。在现代光学显示器和便携式光电子技术的推动下，对柔性超薄玻璃的需求在能耗、制造复杂性和回收方面提出了挑战。在这里，我们通过蒸发驱动的自组装工艺，展示了来自现成自然资源，特别是蛋清 （EA） 和明胶 （GEL） 的大规模超薄玻璃的柔韧性和全彩发光。通过 EA 和 GEL 之间的氢键形成的动态交联网络赋予玻璃高硬度和柔韧性，其硬度和弯曲强度值可与最先进的无机和有机玻璃相媲美。此外，基于 EA-GEL 的玻璃表现出激发依赖性和时间门控的手性超长磷光，颜色为蓝色和红色，使用寿命长达 180.4 ms。这些生物玻璃易于加工和全彩发射，可以制成防伪图案和光学信息代码。