Photochromic lenses that allow you to walk from inside to outside without putting on UV-filtering lenses have been around for decades. But the technology is just making its way to contacts.

Imagine you’re in IKEA, looking for a plastic kitchen stool. You find one, but—darn—it’s turquoise, which just doesn’t match your home color scheme. No problem. You tell a salesperson, who pushes a ...

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A new study sheds light on a photochromic nylon webbing that, because it comprises spiropyran (SP) functionalized polymers, demonstrates color variation in response to extended UV exposure with ...

Reversible photochromism — based on a simple isomerization reaction — is heavily hindered when photochromic dyes are enclosed in polymer matrices. Tethering the dye to a flexible low-melting-point ...