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A closer study of chiral retention mechanisms
Author(s) -
Fornstedt Torgny,
Sajonz Peter,
Guiochon Georges
Publication year - 1998
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/(sici)1520-636x(1998)10:5<375::aid-chir3>3.0.co;2-5
Subject(s) - chemistry , enantiomer , enantioselective synthesis , chirality (physics) , adsorption , bovine serum albumin , chiral stationary phase , composition (language) , chromatography , stereochemistry , computational chemistry , organic chemistry , catalysis , physics , nambu–jona lasinio model , chiral symmetry breaking , linguistics , philosophy , quantum mechanics , quark
The retention mechanisms and the separation of enantiomers on the classes of chiral stationary phases which are made by bonding isolated groups on the surface of an adsorbent are discussed. It is shown that retention on these phases originates from mixed mechanisms and how the individual contributions of these two mechanisms can be separated, by determining and modeling the equilibrium isotherms. A contribution originating from interactions of the isomers with the nonselective sites (type‐I) and another one due to interactions with the enantioselective sites (type‐II) can be determined and their importance studied as a function of several parameters, e.g., temperature or pH. This approach is illustrated with results obtained with different pairs of enantiomers on bovine serum albumin, 4‐methylcellulose tribenzoate, or cellobiohydrolase immobilized on silica. Chirality 10:375–381, 1998. © 1998 Wiley‐Liss, Inc.