Synthesis of new polyporphines by replacing central ion in magnesium polyporphine

Efficient synthesis of a new electroactive polymer of Co(II) porphine by in-situ replacement of Mg(II) inside Mg(II) polyporphine film

“…As previously described [18][19][20]22], pMgP-I polymer shows a large interval of non-electroactivity between ca. -0.7 V and -0.1 V. The limits of this potential interval are marked by two prepeaks, P1(Mg) and P2(Mg).…”

“…The optimized experimental conditions for demetallation and remetallation steps were defined according to the results of kinetics studies (see part 3.2.). As a previous step, electropolymerization of pMgP-I film, is conducted according conditions established in our precedent works [18][19][20]22].…”

“…The voltammogram of pMgP-I (blue dashed curve, Fig. 2) exhibits two reversible systems at 0.645 V (O1(Mg)/R1(Mg)) and -1.50 V (R2(Mg)/(O2(Mg)) which correspond, respectively, to the first oxidation and reduction of the Mg(II) porphine units into their cation and anion radicals [18][19][20]22].…”

“…Previous studies of our group have shown that the electrochemical oxidation at low potential of the fully unsubstituted porphyrin, i.e. magnesium(II) porphine (MgP) led to the formation of an electroactive magnesium(II) polyporphine films on the electrode surface via Cmeso-Cmeso coupling [17][18][19][20][21][22]. This polymer was named type I magnesium polyporphine pMgP-I.…”

“…Recently, we described the synthesis of zinc(II) polyporphine by ion-exchange of Mg(II) by Zn(II) cations inside the Mg(II) polyporphine film [21]. This three step synthesis starts with the formation of the pMgP-I material according to known procedures [18][19][20]22]. Then, demetallation of the polymer is achieved by addition of trifluoroacetic acid (TFA).…”