Recognition of oxoanions

Figure 11.5 Factors responsible for the recognition of oxoanions HS04, H2P04, and ATP2 by polyamidoferrocenyl dendrimers.

Molecular recognition of oxoanions based on guanidinium receptors 07CSR198. 

Labande. A. Ruiz, J. Astruc. D. Supramolecular gold nanoparticles for the redox recognition of oxoanions Syntheses, titrations, stereoelectronic effects, and selectivity. J. Am. Chem. Soc. 2002. 124 (8). 1782. 

Interestingly, a family of 1,2,3-triazole-linked dendrimers containing from 9 (compound 4, Fig. 6.4a) up to 243 peripheral ferrocene units give strong recognition of both oxoanions and metal cations with positive dendritic effect.30... 

The electrochemical properties of the two types of iron-cluster-derivatized AuNPs resemble that of the monomeric tetrairon cluster, except that they additionally show adsorption due to their large size, and evidence that all the Fe4 clusters are active at about the same potential, thereby indicating that they are sufficiently remote from one another to behave independently. The changes in the cyclic voltammetric pattern caused by the addition of H2P04 and ATP2- oxoanions evidence recognition features that are very different from those obtained with dendritic ferrocene exoreceptors. In particular, the results show that with these iron-cluster-derivatized AuNPs... 

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