Solution-Phase Structures of Gallium-Containing Pyrogallol[4]arene Scaffolds


  • We thank NSF for support of this work (J.L.A.). This work utilized facilities supported in part by the National Science Foundation under Agreement No. DMR-0944772 (S.R.K.), NIBIB training grant T21 EB004822 (A.V.M.), NSF grant CHE-89-08304, NIH/NCRR S10 RR022341-01 (Cold probe) for NMR. Certain trade names and company products are identified to adequately specify the experimental procedure. In no case does such identification imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the products are necessarily best for the purpose.


original image

Hollow cylinders: Gallium- and gallium–zinc-seamed pyrogallol[4]arene nanoassemblies were studied in the solution phase through various methods. The results reveal their rearrangement from spheres in the solid state to toroids in solution (see, for example, PgC4GaZn) illustrating the structural flexibility of gallium in the metal-seamed frameworks.