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Plastics change color – and back – in less than 1 second

from Royal Society of Chemistry via Scientific American

Scientists in China, the U.K. and the Netherlands have engineered a polydiacetylene polymer that reversibly changes color within 1 second of being heated or cooled. Thermochromic polymers have a wide range of potential uses, from biological sensors to smart windows. However, the irregular structure and weak molecular interactions in established thermochromic polymers results in long response times, slow reversibility and a narrow working temperature range. more

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