Calix arene-porphyrin conjugates

Thiacalix[4]arene- and Calix[4]arene-porphyrin Conjugates... 

A third contribution [57] fi om Lhotak s group dealing with thiacalixarene-porphyrin and also their corresponding calix[4]arene-porphyrin conjugate molecular tweezers, reported the synthesis of four new receptors. These receptors were produced starting from tetraformyl calixarenes and aminoporphyrin moieties which led to upper-rim 1 -alternate tetraporphyrin derivatives of the corresponding O-... 

The upper lim cone conformed calix[4]arene-zinc porphyrin (ZP) conjugate 180 derivatized at ZP with a p5u-omellitimide (PI) electron acceptor at the distal position on calixarene with a carotenoid unit was designed and S5mthesized for stud5ung the electric field effect of photogenerated ion pair on an adjacent chromophore. The photoinduced charge separation within a ZP-PI electron donor-acceptor pair having an 8.4 A center-center distance in a linear orientation has been found to... 

A lower rim conjugate in which the p-bu -calix[4]arene was covalently linked at 1,3-distal positions to tetraphenylporphyrin through -CH2-CO-NH- at the para position of one of the phenyl rings was metallated using zinc acetate/triethyl amine to form 192. It reacts with the bidentate ligand l,4-diazabicyclo[2.2.2]octane (DABCO) to form a 1 2 complex in which both porphyrin units are ligated separately (2003T2409). 

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