Porphyrin dendrimer derivative

Fig. 3. Haptens and multivalent antigens prepared in this syudy. The viologen derivative, 4,4 -bipyridinium, l-(carboxypentyl)-l -methyl-dichloride (1), divalent antigen 2, and trivalent antigen 3. Anti-porphyrin antibodies were elicited for [5-(4-carboxyphenyl)-10,15,20-tris-(4-methylpyridyl)]porphine (3MPylC) or meso-tetrakis(4-carboxyphenyl)porphine (TCPP). meso-Tetrakis(4-methylpyridyl)porphine (TMPyP) was used to investigate the specificity of the antibody dendrimer for porphyrins...

Other examples include the fullerene dendrimer 57 [61] with a molecular mass of 7344 Da, dendrimer 59 featuring a bis(l,10-phenanthroline)copper(II) core and 16 peripheral fullerene groups (molecular mass 31601 Da) [72,73], and porphyrin derivatives with two [74] and four (58) [75] appended fullerenes. 

Zimmerman et al. were the first to have synthesised a dendrimer imprinted with a porphyrin derivative using the sacrificial spacer methodology a single cavity within a single polymer confinement structure [30]. 

As we have just seen, electrostatic interactions can reinforce the formation of axial base complexes in metalloporphyrins, but other thermodynamically favored processes, such as chelation around a bidentate base like pyrazine, can be used. This approach has led Kuroda to the preparation of self-assembled dendrimer-type structures 86-89 represented in Figure 13.50 ". In these structures, the zinc porphyrin dimer formed by multihydrogen bonding of tetracar-boxylate derivatives of TPP is considered as a chelate. 

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