Subcomponent self-assembly and guest-binding properties of face-capped Fe 4L 48+ capsules
A general method for preparing Fe 4L 4 face-capped tetrahedral cages through subcomponent self-assembly was developed and has been demonstrated using four different C 3-symmetric triamines, 2-formylpyridine, and iron(II). Three of the triamines were shown also to form Fe 2L 3 helicates when the appropriate stoichiometry of subcomponents was used. Two of the cages were observed to have nearly identical Fe-Fe distances in the solid state, which enabled their ligands to be coincorporated into a collection of mixed cages. Only one of the cages combined a sufficiently large cavity with the sufficiently small pores required for guest binding, taking up a wide variety of guest species in size- and shape-selective fashion. © 2011 American Chemical Society.
Publication Source (Journal or Book title)
Journal of the American Chemical Society
Bilbeisi, R., Clegg, J., Elgrishi, N., Hatten, X., Devillard, M., Breiner, B., Mal, P., & Nitschke, J. (2012). Subcomponent self-assembly and guest-binding properties of face-capped Fe 4L 48+ capsules. Journal of the American Chemical Society, 134 (11), 5110-5119. https://doi.org/10.1021/ja2092272