A team of chemists from Osaka University in Japan have identified a rare property in a crystal.
When exposed to the cool glow of ultraviolet light, the solid organic material transforms into a liquid.
Though unusual, it's not the first substance found to undergo what's known as photo-induced crystal-to-liquid transition . But being able to study the transition using light could help scientists understand it better, potentially opening up a whole range of potential uses in photonics, electronics, and drug delivery.
"This is the first organic crystal we know of that exhibits a luminescent evolution during crystal melting, showing changes in intensity and color, from green to yellow,"The material is a type of organic compound known as a heteroaromatic diketone, one the team dubbed 'SO' after the sulfur and oxygen in its two rings.
Further insights were obtained from other similar crystal compounds, that either didn't melt or did melt but didn't change color. That tells the researchers something about the molecular changes that occur as these crystals shift from solids to liquids.
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