A novel porphyrin-salen compound and corresponding zinc(II) porphyrin-salen compound (ZnPSC₁₀) covalently linked by a flexible alkoxy chain (–O(CH)₁₀O–) have been synthesized and characterized. Molecular recognition of three N-heterocyclic guests, pyridine, 1,4-diazobycyclo[2,2,2]octane (DABCO) and pyrazine, with the host ZnPSC₁₀ was investigated. Binding constants were determined by means of UV-vis titration method. The binding mode of ZnPSC₁₀ with DABCO has been discussed in detail by using ¹H NMR. It was found that the conformations of the recognition system changed from closed to open with the adding of DABCO.

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Volume24, Issue8

August, 2006

Pages 1031-1036

Molecular Recognition of Porphyrin-Salen Compound towards N-Heterocyclic-guests

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Molecular Recognition of Porphyrin-Salen Compound towards N-Heterocyclic-guests

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