Bent benzenoid structures. (a) Corannulene, showing the five arene rings fused to a central five-membered ring. (b) Corannulene, showing the cup shape. (c) Buckminsterfullerene, a spherical allotrope of carbon.
Variations of the sulfur Kβ line with valence state of sulfur. (After L. S. Birks and J. V. Gilfrich, X-ray fluorescence analysis of the concentration and valence state of sulfur in pollution samples, Spectrochim. Acta, 33B, no. 7:305, 1978)
Hexagonal triple coaxial cylindrical structure observed in PS-b-PI-b-PDMS-b-P2VP found by transmission electron microscopy. (Reprinted with permission from Macromolecules, 35:4859–4861, 2002. Copyright 2002 American Chemical Society)
Monitoring the living polymerization of γ-benzyl-smma-glutamate NCA with n-hexylamine by size exclusion chromatography with a UV detector. The monomer is transformed 100% to polypeptide. (Reprinted with permission from Biomacromolecules,…