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Photoluminescent Materials have the ability to absorb and then reemit light. This means they can glow even after the original light source is taken away. This property makes them useful in an incredibly wide range of applications, including smartphone displays, emergency signage, medical imaging, and, yes, glow-in-the-dark toys.
The challenge is that current photoluminescent materials (PMs) are often made with rare-earth materials that are toxic and hard-to-source.
Researchers at Yale University and Nottingham Trent University are developing a new way to create PMs that instead uses plant lignin and an amino acid called histidine.
Adding to the potential benefits, this new material can be made using benign solvents such as water and acetone.
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