**6. References**

50 Electropolymerization

It is shown that the applicability of the above adsorption isotherms was compared by judging the correlation coefficients. The results indicate that the Langmuir isotherm fits quite well with the experimental data (r2= 0.99), whereas, the low correlation coefficients (r2 > 0.97) show the poor agreements of the Freundlich isotherm with the experimental data. The value of n for Freundlich isotherm is greater than 1, mean while the values of RL lie

between 0 and 1, indicating that MB dye is favorably adsorbed by POHP.

Fig. 21. Langmiur and Frendlich isotherms for adsorption of MB dye on POHP.

adhering properties of POCP and POHP to Pt-surface.

basic solution and loose its response by time.

Cv is useful tool in oxidation of pollutants as phenols. The electropolymerization, by cyclic voltammetry, of phenols on Pt-surfaces is a notoriously complex process which depends on the phenols structure, the potential scan rate, the pH, the temperature and the phenols concentration. Comparing the voltammograms from the different monomer compound solutions, it was demonstrated that the polymer film resulting from both OCP and OHP oxidation leads to the higher surface deactivation degree. This is probably due to the higher

The proposed mechanisms are well confirmed by different tools and agree with that

The oxidation processes are partially controlled processes with stable diffusion coefficients

The Obtained polymers are amorphous with higher thermal stability with smooth lamellar

POCP modified Pt electrode could be used as one use pH sensor with good response and perfect Nernstian- slope especially at pH range 4-9 but its poor pH sensor at more acidic or

POHP is a perfect adsorbent to MB dye from aqueous solution and must be used in

surface feature for POCP and a smooth feature with uniform thickness for POHP.

More work must be done to improve both response and stability of the sensor.

**4. Conclusions** 

mentioned in literatures.

purification of waste water.

CV Cyclic Voltammetry OCP Ortho-chlorophenol

**5. Nomenclatures** 

at different scan rates.


**3** 

*France* 

**Oxidation of Porphyrins in the Presence of** 

**Electropolymerization of the Macrocycles** 

Delphine Schaming1, Alain Giraudeau2, Laurent Ruhlmann1,2 et al.\* *1Laboratoire de Chimie Physique, UMR 8000 CNRS / Université Paris-Sud 11,* 

*2Laboratoire d'Electrochimie et de Chimie-Physique de Corps Solide, UMR 7177 CNRS / Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg cedex,* 

Porphyrins and porphyrins-containing materials have attracted a considerable attention these last decades, not only because of their roles as biological photosensitizers, redox centers and oxygen carriers, but also because of their attractive chemical properties and potential technological applications (Kadish et al., 2000). In particular, molecular engineering and design of controlled spatial assemblies and architectures of porphyrins are fields undergoing wide growth (Griveau & Bedioui, 2011). For example, macromolecular porphyrins-based systems can potentially mimic natural metalloenzyme structures. Indeed, in such systems, proteins are replaced by metalloporphyrins which can mimic the structure and/or the activity of the prosthetic groups of enzymes (Traylor, 1991). Another area of applications of such assembled porphyrins systems consists in the field of nanomaterials, the electronic communication between the macrocycles allowing developments of molecular photonic, electronic or optoelectronic devices (Jurow et al., 2010). Finally, nanocomposite porphyrins-based materials have also been investigated for applications involving energy

For this purpose, porphyrins-based polymers have received peculiar attention these last decades. For instance, it has been established that a polymeric matrix may provide the best arrangement for a catalytically active center. The immobilized porphyrins appeared also

*1Laboratoire de Chimie Physique, UMR 8000 CNRS / Université Paris-Sud 11, Faculté des Sciences d'Orsay, bât.* 

*3Institut des NanoSciences de Paris, UMR 7588 CNRS / Université Paris 6, 4 place Jussieu, boîte courrier 840,* 

*4Sciences Chimiques de Rennes, équipe MaCSE, UMR 6226 CNRS / Université de Rennes 1, campus de* 

storage systems, fuel cells and sensors (Di Natale et al., 2010; Ma et al., 2006).

Clémence Allain1, Jian Hao1, Yun Xia1, Rana Farha3, Michel Goldmann3, Yann Leroux4

**1. Introduction** 

 \*

and Philippe Hapiot4

*349, 91405 Orsay cedex, France* 

*Beaulieu, bât. 10C, 35042 Rennes cedex, France*

*75252 Paris cedex 05, France* 

**Nucleophiles: From the Synthesis of** 

**Multisubstituted Porphyrins to the** 

*Faculté des Sciences d'Orsay, bât. 349, 91405 Orsay cedex* 

Wang, J., Martinez, T. Daphna, Y. R. & McCormick, L.D. (1991). Scanning tunneling microscopic investigation of surface fouling of glassy carbon surfaces due to phenol oxidation, Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 313 ( 1-2): 129-140
