Bojdys, M. J.; Briggs, M. E.; Jones, J. T. A.; Adams, D. J.; Chong, S. Y.; Schmidtmann, M.; Cooper, A. I. Supramolecular Engineering of Intrinsic and Extrinsic Porosity in Covalent Organic Cages. Journal of the American Chemical Society 2011, 133 (41), 16566-16571 DOI: 10.1021/ja2056374.