A theoretical mechanistic study on electrical conductivity enhancement of DMSO treated PEDOT:PSS

Abstract

The conductivity enhancement in solvent treated PEDOT:PSS is a result of the solvation of the PSS shell, leading to the release of conductive PEDOT in the core.

Multi‐C−C/C−N‐Coupled Light‐Emitting Aliphatic Terpolymers: N−H‐Functionalized Fluorophore Monomers and High‐Performance Applications

“…Indeed, except for 5 , the highest aggregation achieved in methanol has been attributed to the increased local fluorophore concentration in the strongly polar environment. However, the abnormally higher aggregation of 5 in DMSO is associated with strong hydrogen bonding, along with the interaction of methyl hydrogen atoms with sulfonate oxygen atoms of the sulfonic acid moieties (Figure f) . In contrast, the relatively poor aggregation observed in the least polar solvent, as realized from the lower H MR of the terpolymers in CHCl 3 , is related to the favorable terpolymer–solvent interactions, resulting in poor entanglement between macromolecular chains.…”

“…Eur.J.2020, 26,502 -516 www.chemeurj.org tion of methyl hydrogen atoms with sulfonate oxygen atoms of the sulfonica cid moieties (Figure 5f). [22] In contrast, the relatively poor aggregation observed in the least polar solvent, as realized from the lower H MR of the terpolymers in CHCl 3 ,i sr elated to the favorable terpolymer-solvent interactions, resulting in poor entanglement betweenm acromolecular chains.…”

Effect of H2SO4 Solution Treatment on Adhesion, Charge Transfer, and Catalytic Performance of Screen‐Printed PEDOT:PSS

“…[57] Interestingly, unlike the complete detachment after H 2 O treating ( Figure S1) In the case of H 2 SO 4 diluted with DMSO, DMSO has the following two effects: (1) interacts with neutral PSSH via forming strong H-bond and decrease the interaction between PSS units, causing the chain expansion and phase separation of PSSH shells; (2) weakens the Coulombic interaction between PEDOT + and PSS À via charge screen. [32,58] Therefore, as Scheme 2d shows, the introduction of DMSO not only causes the conformational change of PEDOT:PSS chains, but also leads to removal of numerous PSS and PEDOT units accompanied by the reduced thickness of the film, and the possible regrouping of the remaining PSS and PEDOT units. Meantime, the weakened PEDOT + -PSS À interaction providing more chances for HSO 4 À to replace coupled PSS À , and connect PEDOT units and the substrate.…”

Synergetic Effect of Perfluorooctanoic Acid on the Preparation of Poly(3,4‐ethylenedioxythiophene): Lignosulfonate Aqueous Dispersions with High Film Conductivity

“…As is known, PEDOT CP is a conductive complex that is composed of a conductive component of PEDOT and a dopant. The dopant greatly affects the intra‐ and inter‐chain charge hoping of PEDOT and thus plays a key role in determining the film conductivity . According to the molecular weight, dopant can be divided into small molecular dopant and polymeric dopant.…”