Salen (IMAGE) Ural Federal University Caption According to scientists, salen - the substance at the photo - is relatively simple and inexpensive to synthesize. Credit UrFU / Damir Safin Usage Restrictions Photo may be freely used to illustrate this topic, but please credit the author of the image: UrFU / Damir Safin 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.