A p-tert-butylcalix[6]crown-4 derivative immobilized on gold surfaces via self-assembly, endowed with a rigid cavity, can serve as a remarkably efficient sensor for aniline compared to alkylamines. The stability of the inclusion complex is attributed to the size fit and to the multipoint recognition motifs between the host monolayer and the guest aniline. [structure: see text]
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Zhang et al. (2004) studied this question.
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