Inside information on xenon adsorption in porous organic cages by NMR.

ABSTRACT: A solid porous molecular crystal formed from an organic cage, CC3, has unprecedented performance for the separation of rare gases. Here, xenon was used as an internal reporter providing extraordinarily versatile information about the gas adsorption phenomena in the cage and window cavities of the material. ¹²⁹Xe NMR measurements combined with state-of-the-art quantum chemical calculations allowed the determination of the occupancies of the cavities, binding constants, thermodynamic parameters as well as the exchange rates of Xe between the cavities. Chemical exchange saturation transfer (CEST) experiments revealed a minor window cavity site with a significantly lower exchange rate than other sites. Diffusion measurements showed significantly reduced mobility of xenon with loadin

SUBMITTER: Komulainen S 

PROVIDER: S-EPMC5621166 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature