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Molecular recognition of aromatic hydrocarbons by four endo-functionalized molecular tubes has been studied by 1H NMR spectroscopy, computational methods, and single crystal X-ray crystallography. The binding selectivity is rationalized by invoking shape complementarity and dipole alignment. The non-covalent interactions are proved to predominantly be C/N-H⋅⋅⋅π interactions.
A phase-selective, bis-urea organogelator with a curved bis-naphthalene core was synthesized and characterized. This gelator is capable of gelating a variety of hydrocarbons and oils. The resulting gels have been characterized by rheology, SEM, and molecular modelling. The gelator can be applied in the powder form for the recovery of a thin layer of petrol oil spill in water.
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