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Fully bio-based epoxy thermosets can be achieved by the reaction of active esters and epoxide in eugenol-derived epoxy compounds.

Highly efficient blue organic light-emitting diodes (OLEDs) are necessary for high-resolution full-color displays and solid-state lighting applications.[1] The dopant-host system is often adopted to improve OLED performance. However, electroluminescence (EL) properties, including color purity, are extremely sensitive to the dopant concentration, [2] which is usually less than 2 wt % with a AE0.5 wt % variation. Precise control of the dopant concentration using co-evaporation methods is not an easy task. The development of highperformance blue-light-emitting materials suitable for nondoped OLEDs is one method of circumventing such fabrication problems. With many literature examples, nondoped-type

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