Diving Deep into the Infrared (IMAGE) Washington University in St. Louis Caption A small group of chemists has pushed deep into the infrared by loading the y axis of a bacteriochlorin with additional chemical groups. As a proof of principle they also showed that if groups were attached to the x axis, the absorption shifted in the other direction. Credit Holten et al. Usage Restrictions Please credit License Licensed 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.