Electrochemistry of two novel conjugated conducting polymers containing phenothiazine moieties in main chain

Author(s): Guoxin Zhao, Liping Wang, Ming Zhao, Lingchuan Li, Fang Wang

The electrochemical behaviour of two novel conjugated polymers (m-Polymer and Ph-Polymer) containing phenothiazine moieties in main chain were studied in DMF with 0.1M TBAP by means of cyclic voltammetry (CV) and differential pulse voltammetry (DPV) on the glassy carbon electrode (GCE). The results show that m-Polymer has a stable oxidative peak at 1.084V and a reductive peak at –1.546V. However, Ph-Polymer has two oxidative peaks at 0.852V and 1.155V and two reductive peaks at –1.682V and –2.044V respectively. By some electrochemical techniques, the electrode reaction processes were investigated in detail and their dynamic parameters were obtained. In addition, the electrode reaction mechanism was deduced and the energy levels of the frontier orbits of the two polymers were calculated using CV and UV.

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