Anodic oxidation and physicochemical properties of various porphyrin-fluorenes or -spirobifluorenes: Synthesis of new polymers for heterogeneous catalytic reactions

Comparative behaviour of the anodic oxidation of mono-, di- and tetra-arylporphyrins: Towards new electroactive materials with variable bandgaps

“…1A), as previously showed for tetraarylporphyrins [15], four electrochemical reversible processes involving one electron per porphyrin molecule are observed, corresponding to the oxidation of the porphyrin (E 1 ox) followed by that of the resulting p-cation (E 2 ox) and to the reduction of the porphyrin (E 1 red) followed by that of the resulting p-anion (E 2 red). Compared with the first oxidation potential of the porphyrin in TFP (0.58 V) [17] and TPP (0.53 V) [16], porphyrin 1 oxidation occurs in between (0.55 V).…”

“…We previously described the anodic electrodeposition of various tetraarylporphyrins [15] substituted by four phenyl units (TPP) [16], four 2-fluorenyl units (TFP), [17] or four spirobifluorenyl units (TSBFP) [18] (Scheme 1). More recently, we described also the preparation of supramolecular architectures as molecular wires or 2D-materials including porphyrin macrocycles, by anodic oxidation of substituted meso-tetraaryl porphyrins possessing two opposite fluorenyl and phenyl groups (DFDPP) [19].…”

Electrochemical behavior of the tetracationic porphyrins and

“…Many examples of porphyrin electropolymerizations were reported in the literature. The corresponding radical coupling process occurred usually via electro-oxydation [14,15,[55][56][57][58]. Processes via electro-reduction, as the presented one, were less frequent.…”

Dispirofluorene–Indenofluorene Derivatives as New Building Blocks for Blue Organic Electroluminescent Devices and Electroactive Polymers

“…This second process occurs in a potential range slightly more positive than the oxidation potential of SBF and F oxidation ( Table 2). These two compounds are known to undergo electropolymerisation processes [82,83,[97][98][99] and DSF-IFs present the same behaviour. Indeed, recurrent sweeps between 0.5 and E 2 lead to gradual modification of the CVs and to the modification of the electrode surface by an insoluble transparent deposit.…”