Abstract
AbstractThe effect of a solute's shape on retention using porous glassy carbon (PGC) as a stationary phase in supercritical fluid chromatography (SFC) is described. A series of stilbene and stilbene‐like molecules that have similar solvatochromic parameters but markedly different three dimensional configurations was used to explore the possible effects of molecule shape on PGC adsorption. The extent of π‐π interactions between the solutes (stilbene and stilbene‐like molecules) and the carbon surface was predominately controlled by the three‐dimensional shape of the solutes. In every case the planarity of the solute correlated with the retention of the solute.
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