Self-assembly, binding, and dynamic properties of heterodimeric porphyrin macrocycles |
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Authors: | Ballester Pablo Costa Antoni Deyà Pere M Frontera Antonio Gomila Rosa M Oliva Ana I Sanders Jeremy K M Hunter Christopher A |
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Institution: | ICREA and Institute of Chemical Research of Catalonia (ICIQ), 43007-Tarragona, Spain. pballester@iciq.es |
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Abstract: | A series of heterodimeric tetralactam macrocycles have been self-assembled using two kinetically labile zinc porphyrin-pyridine interactions. The stability constants have been determined by UV-vis titrations in CHCl3. The stability constants depend on the degree of preorganization of the linker units connecting the interacting groups. The ability of the self-assembled macrocycles to bind a terephthalamide guest was also investigated. One of the macrocycles was used for the construction of a 2]rotaxane. The dynamic properties of this system provide insight into the exchange mechanisms that operate in complex noncovalent assemblies. |
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