The interaction of a pair of amino acid enantiomers, L-3-(2-naphthyl)-alanine(L-NA) and D-3-(2-naphthyl)-alanine(D-NA), with cucurbit[7]uril(Q[7]) and inverted cucurbit[7]uril(i Q[7]) was investigated, respectively, by using NMR spectroscopy, electronic absorption spectroscopy, fluorescence spectroscopies, isothermal titration calorimetry(ITC) experiments and MALDI-TOF mass spectrometry. Furthermore, the similarities and differences of the self-assembly patterns between the two kinds of cucurbituril with di...