Towards understanding the doping mechanism of organic semiconductors by Lewis acids

Enzyme-assisted in vivo polymerisation of conjugated oligomer based conductors

“…S2, ESI †). These observations point out towards a doping mechanism that recently has been reported by Yurash et al 25 The presence of water results in the protonation of the thiophene unit of the polymer. Upon protonation, a cation is formed in the conjugated backbone of the polymer.…”

“…A neutral polymer chain can then undergo a single electron transfer with the protonated polymer giving one polymer chain with a positive polaron and another polymer chain with an unpaired electron. 25,26 All the above findings suggest that the ETE-S can be polymerized with the peroxidase enzyme acting as a catalyst in the presence of hydrogen peroxide in physiological pH.…”

Self‐Healable and Stretchable Organic Thermoelectric Materials: Electrically Percolated Polymer Nanowires Embedded in Thermoplastic Elastomer Matrix

“…Although the peak intensities decreased with increasing doping concentration, the p‐doped P3BT still showed good molecular ordering, except in the case of addition of excessive BCF (ϕ BCF = 40.5 mol%). The addition of BCF dopant molecules could hinder efficient crystal packing of P3BT, mainly because the bulky dopant molecules strongly interacted with the polymer backbones . In detail, the interaction between the P3BT nanowires and bulky pentafluorophenyl moieties in BCF molecules could possibly cause the reduction in polymer crystallinity.…”

“…The addition of BCF dopant molecules could hinder efficient crystal packing of P3BT, mainly because the bulky dopant molecules strongly interacted with the polymer backbones. [30,36,37] In detail, the interaction between the P3BT nanowires and bulky pentafluorophenyl moieties in BCF molecules could possibly cause the reduction in polymer crystallinity. Nevertheless, most of P3BT nanowires still preserved their percolated networks even after doping ( Figure 2b) and molecular ordering to a certain degree ( Figure 3).…”

The Role of Electrostatic Interaction between Free Charge Carriers and Counterions in Thermoelectric Power Factor of Conducting Polymers: From Crystalline to Polycrystalline Domains

“…At the molecular level, in the case of p ‐type TE polymers, additional oxidant molecules are introduced, causing integer charge transfer from the host polymers to the dopants, which results in positively charged polymers and negatively charged dopants (i.e., counter anions). [ 6 ] Subsequently, the charge carriers overcome the electrostatic interaction, and escape from Coulomb traps, leading to the generation of free charge carriers. [ 7 ] Within the individual crystalline domains, the created free charge carriers undergo transport along the conjugated chains or π ‐ π stacking directions.…”