Abstract
Chiral colorimetric sensor 4 has been synthesized, and the structure characterized by IR and 1H NMR spectroscopy, mass spectrometry, and elemental analysis. The chiral recognition of the receptor was studied by 1H NMR and UV-vis spectroscopy. The results of non-linear curve fitting indicate that the receptor 4 and l- or d-mandelate and alanine anions form a 1:1 stoichiometric complex. The obvious colour change of receptor 4 can be observed by the naked eye when the enantiomers of mandelate and alanine anions are added, which demonstrates that receptor 4 may be used as the colorimetric sensor for the two carboxylic anions.
Published Version
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