التفاصيل البيبلوغرافية
| العنوان: |
Chiral Discrimination by. |
| المؤلفون: |
Brown, Christopher J.1, Hopkins, Todd A.1 |
| المصدر: |
Chirality. Apr2015, Vol. 27 Issue 4, p320-325. 6p. |
| مصطلحات موضوعية: |
*CHIRALITY, *IONIC liquids, *AMINO acids, *METHYL formate, *ANIONS, *EUROPIUM, *AMMONIUM compounds |
| Reviews & Products: |
ANIONIC Surfactants (Book) |
| مستخلص: |
Chiral hold promise in many asymmetric applications. This study explores the impact of ionic solutes on the chiral discrimination of five amino acid methyl ester-based , including L- and D-alanine methyl ester, L-proline methyl ester, L-leucine methyl ester, and L-valine methyl ester cations combined with bis(trifluoromethanesulfonimide) anion. Circularly polarized luminescence spectroscopy was used to study the chiral discrimination by measuring the equilibrium of a dissymmetric europium complex, Eu(dpa)33− (where dpa = 2,6-pyridinedicarboxylate). The chiral discrimination measured was dependent on the concentration of Eu(dpa)33− and this concentration-dependence was different in each of the . with L-leucine methyl ester and L-valine methyl ester even switched enantiomeric preference based on the solute concentration. Changing the cation of the Eu(dpa)33− salt from tetrabutylammonium to tetramethylammonium ion also affected the chiral discrimination demonstrated by the . Chirality 27:320-325, 2015. © 2015 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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