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Strategies for the Design of PEDOT Analogues Unraveled: the Use of Chalcogen Bonds and σ-Holes.

Dominik FarkaKristian KřížJindřich Fanfrlík
Published in: The journal of physical chemistry. A (2023)
In this theoretical study, we set out to demonstrate the substitution effect of PEDOT analogues on planarity as an intrinsic indicator for electronic performance. We perform a quantum mechanical (DFT) study of PEDOT and analogous model systems and demonstrate the usefulness of the ωB97X-V functional to simulate chalcogen bonds and other noncovalent interactions. We confirm that the chalcogen bond stabilizes the planar conformation and further visualize its presence via the electrostatic potential surface. In comparison to the prevalent B3LYP, we gain 4-fold savings in computational time and simulate model systems of up to a dodecamer. Implications for design of conductive polymers can be drawn from the results, and an example for self-doped polymers is presented where modulation of the strength of the chalcogen bond plays a significant role.
Keyphrases
  • molecular docking
  • molecular dynamics simulations
  • transition metal
  • molecular dynamics
  • quantum dots
  • perovskite solar cells
  • reduced graphene oxide
  • density functional theory
  • gold nanoparticles