fig2

Figure 2. (A) Valence band π and conduction band π* orbital energy diagram of trans-polyacetylene. Reproduced with permission^[68]. Copyright 2012 Royal Society of Chemistry. (B) Potential energy diagram of charge transfer reaction in conducting polymers. Reproduced with permission^[70]. Copyright 2007 CRC Press. (C) Schematic diagram of the electron transport path in conducting polymers. Reproduced with permission^[71]. Copyright 2006 Oxford University Press. (D) Schematic diagram of the formation of polarons in conducting polymers under the influence of positive charges. Reproduced with permission^[70]. Copyright 2007 CRC Press.