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Pirkle, William H. Gan, Kevin Ze 2015-09-25T22:14:17Z 2015-09-25T22:14:17Z 10000-01-01 1998 1998 The occurrence of $\pi - \pi$ face to face and $\pi - \pi$ face to edge interactions on a particular type of chiral stationary phase (CSP) used for chromatographic separations of enantiomers has been studied. Highly polarizable aromatic substituents, such as halogens, have been found to enhance $\pi - \pi$ face to face interactions and can be used in the designs of new CSPs so as to improve their enantioselectivity. The structural elements required for successful enantioseparations of hydantoins and thiohydantoins were systematically investigated with the aforementioned CSP. Additionally, a new CSP in its family was rationally designed and synthesized in an attempt to optimize its chromatographic performance. Made available in DSpace on 2015-09-25T22:14:17Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9834677.pdf: 4303427 bytes, checksum: e94eb917c54fbd879438566a1896fe30 (MD5) Previous issue date: 1998 Embargo set by: Seth Robbins for item 85678 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 99 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1998. http://hdl.handle.net/2142/84397 (MiAaPQ)AAI9834677 eng Chemistry, Analytical Synthetic Chiral Stationary Phases in Enantioselective Liquid Chromatography text Chemistry Chemistry University of Illinois at Urbana-Champaign Dissertation Ph.D.