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Enantiodifferentiating Properties of the Alignment Media PELG and PBLG - A Comparison
Ist Teil von
European journal of organic chemistry, 2016-03, Vol.2016 (7), p.1324-1329
Ort / Verlag
Weinheim: WILEY-VCH Verlag
Erscheinungsjahr
2016
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Homopolypeptide‐based alignment media can induce different orientations of enantiomers as a result of their α‐helical structures. This property enables the discrimination of enantiomers through anisotropic NMR parameters such as residual dipolar couplings (RDCs). In this paper, the enantiodiscriminating properties of two alignment media derived from polyglutamic acid derivatives – poly‐γ‐benzyl‐L‐glutamate (PBLG) and poly‐γ‐ethyl‐L‐glutamate (PELG) – are compared and discussed. The two analytes, isopinocampheol and β‐pinene, are investigated, and the role of the lateral side chain of the homopolypeptide in the orientation process is examined.
Lyotropic liquid crystalline phases of poly‐γ‐benzyl‐L‐glutamate (PBLG) and poly‐γ‐ethyl‐L‐glutamate (PELG) are used to measure the residual dipolar couplings of the enantiomers of isopinocampheol and β‐pinene. A comparison and investigation of the enantiodifferentiating behavior of these homopolypeptides provide new insight into the alignment process.