Organometallic interactions porphyrins

Organometallic compounds play an essential role in the development and production of new materials for industry, especially electronic materials. The role of metalloporphyrins as chemically interactive materials in chemical sensors has interested researchers for a long time (1-4). The rich coordination chemistry of porphyrins is responsible for their use in chemical-sensor... 

Most supramolecular nanotube modifications involve noncovalent interactions on the external surface of the CNT (i.e., exohedral. Figure 1). For example, n-n stacking is employed to attach pyrene " and porphyrin " molecules to the surface of CNTs. Hydrophobic and van der Waals interactions are necessary for micelle-forming compounds (i.e., surfactants and lipids ) and polymer (both syn-thetic " and natural ) to functionalize CNTs. The so-called r-cation interactions represent an additional exohedral approach for functionalizing CNTs. Finally, organometallic bonding is required for the decoration of CNT with metal nanoparticles (NP) at defect sites. ... 

This paper has discussed the electrochemistry of metal-carbon and metal-metal bonded metalloporphyrins. The field is quite new and the majority of published studies result from work carried out in our own laboratory during the period 1984 to 1987. To date, relatively few examples of a-bonded metal-carbon and metal-metal bonded metalloporphyrins are known, but it is theoretically possible to prepare and characterize representative complexes with almost all elements in the periodic table. The field is rapidly expanding and future synthetic developments in porphyrin chemistry should certainly lead to new complexes possessing different metal-metal or metal-carbon interactions and possibly different electrochemistry. These types of complexes are of interest in modelling some biological processes, in synthetic organometallic chemistry and in the preparation of new poljrmeric materials with conducting properties. 

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