An Explanation for the Very Large Breathing Effect of a Metal–Organic Framework during CO₂ Adsorption

Abstract

The unusual adsorption behavior of CO2 in a nanoporous hybrid metal– organic solid is discussed (see figure). The results indicate that the gas adsorption–desorption step is related to a breathing phenomenon. This study also suggests that the main interactions responsible for the breathing phenomenon are strong guest–framework CO2–OH interactions as well as CO2–CO2 interactions along the tunnels present in the structure. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2007/c2645_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.