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The self-assembling via hydrogen bonding can be the important basis of the main concept in molecular recognition. We have designed and modified the organic schiff base, N,N′-bis(o-hydroxybenzylidene)diethylenetriamine and its halo- (Cl- or Br-) derivatives as artificial receptors that exhibit the strong binding characteristics to barbituric acid as a guest. 1H-NMR spectroscopic titration has been performed to characterize the noncovalent intermolecular interaction between the schiff base or its halo-derivatives and a barbituric acid molecule.
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Park et al. (1999) studied this question.
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