Coordination polymer crystals show promise as new generation of light sources for industry, medicine

https://phys.org/news/2024-02-polymer-crystals-generation-sources-industry.html

"phosphor LEDs with readily tuned emissions... luminescent lanthanide polymer crystal nanospheres with very narrow linewidth emission bands... from components containing central europium atom (a lanthanide element) complexed with surrounding organic chemical groups... high light emission efficiency and thermal stability... nano- to macro-sized crystals connected by coordination bonds... wide wavelengths' range excitable...  easy to crystallize, readily dispersible in solvents... fluorescent, on par with quantum dots"

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