142nd iCeMS Seminar: Prof. Alain Fuchs

Soft porous crystals are flexible metal-organic frameworks that respond to physical stimuli (temperature, pressure, and gas adsorption) by large changes in their structure and unit cell volume. I will describe a thermodynamic treatment, based on the so-called osmotic ensemble, of the interplay between guest adsorption and host deformation, where the bare host material can undergo elastic deformation, as well as structural transitions between metastable phases in the case of a multistable material. We show that in addition to structural transitions between metastable phases of bistable or multistable host frameworks, a new guest-stabilized host phase can be created when the size of the adsorbate is larger than the empty material's pore size. I will then confront the findings of our approach with experimental data for systems exhibiting phenomena such as gate opening and breathing.

Lecturer
Prof. Alain Fuchs
Executive President
Centre National de la Recherche Scientifique (CNRS)
Title Structural Transitions in Soft Porous Crystals Upon Fluid Adsorption: a Theoretical Approach
Date / Time Fri, 04 Oct 2013 / 16:00-17:30
Venue 2nd Floor Seminar Room (#A207) iCeMS Main Building (#70), Kyoto University
-> Directions
Flyer PDF FilePDF (100KB)
Host Kyoto University Institute for Integrated Cell-Material Sciences (WPI-iCeMS)
Contact iCeMS Kitagawa Lab | kitagawa-g@icems.kyoto-u.ac.jp