Flexible anionic metal-organic frameworks transform to neutral heterobimetallic systems via single-crystal-to-single-crystal processes invoked by cation insertion. These transformations are directed by cooperative bond breakage and formation, resulting in expansion or contraction of the 3D framework by up to 33% due to the flexible nature of the organic linker. These MOFs displays highly selective uptake of divalent transition metal cations (Co2+ and Ni2+ for example) over alkali metal cations (Li+ and Na+).
Revised: June 22, 2012 |
Published: May 25, 2012
Citation
Tian J., L.V. Saraf, B. Schwenzer, S.M. Taylor, E.K. Brechin, J. Liu, and S.J. Dalgarno, et al. 2012.Selective Metal Cation Capture by Soft Anionic Metal-Organic Frameworks via Drastic Single-Crystal-to-Single-Crystal Transformations.Journal of the American Chemical Society 134, no. 23:9581-9584.PNNL-SA-86383.doi:10.1021/ja303092m