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Date Time Chain length determines molecular colour Researchers at ETH Zurich have developed fluorescent polymers whose colour can be easily tuned. Depending on their length, the polymers emit a different colour. Potential applications include biomedicine, security printing and solar energy. These polymers, seen here under UV light, are composed of the exact same components. The only difference is their chain length. (Photograph: Suiying Ye / ETH Zurich) Around the world, a huge amount of research and development work is currently being done on carbon-containing, or organic, molecules that emit coloured light after appropriate excitation. This research field is driven by the display industry and the development of biomedical imaging techniques. While precise colour tuning in organic fluorescent dyes has so far usually been achieved by mixing different molecules, ETH researchers have now developed an approach that can generate a broad palette of colours by way of chemical adjustmen

Yinyin baoJean christophe lerouxChih jen shihRoyal melbourne institute of technologyRoyal melbourne instituteஜீன் கிறிஸ்டோஃப் லேரௌுக்ஷசிஹ் ஜென் ஷிஹ்அரச மெல்போர்ன் நிறுவனம் ஆஃப் தொழில்நுட்பம்அரச மெல்போர்ன் நிறுவனம்