organic LED (IMAGE) Ural Federal University Caption One of the assembled organic LEDs based on push-pull systems containing cyanopyrazine fragment. Credit Ruslan Gadirov Usage Restrictions Photo may be freely used to illustrate this topic, but please credit the author of the image: Ruslan Gadirov License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.