Self-assembly, binding, and dynamic properties of heterodimeric porphyrin macrocycles.
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.
Ballester
Pablo
P
ICREA and Institute of Chemical Research of Catalonia (ICIQ), 43007-Tarragona, Spain. pballester@iciq.es
Costa
Antoni
A
Deyà
Pere M
PM
Frontera
Antonio
A
Gomila
Rosa M
RM
Oliva
Ana I
AI
Sanders
Jeremy K M
JK
Hunter
Christopher A
CA