Tam, Teck Lip Dexter published the artcileThermoelectric Performances of n-Doped Ladder-Type Conjugated Polymers Using Various Viologen Radical Cations, Quality Control of 47369-00-6, the publication is ACS Applied Polymer Materials (2021), 3(11), 5596-5603, database is CAplus.
Understanding the dopant-polymer interaction is of interest to the conducting polymer research community due to its influence on charge transport properties and also thermoelec. performance. However, studies on such interactions are often complicated by the change in polymer morphol. upon the addition of dopants. Here, we utilized sequential solution doping of a ladder-type poly(benzimidazobenzophenanthrolinedione) (BBL) via viologen radical cation salts. The strong interchain interaction in BBL prevents the infiltration of the viologen radical cations into individual BBL fibrils, thus minimizing the disruption of the polymer morphol. By changing the N-substitution (benzyl or hexyl) and counteranion (chloride or iodide) of the viologen radical cations, the dopant-polymer interaction in such a system was studied. Our results suggest that the anion-π (radical) interaction between the counteranion and BBL (BBL–) is detrimental to the charge transport properties and thermoelec. performance of this system. This anion-π (radical) interaction between the counteranion and BBL (BBL–) is governed by the solution state of the viologen radical cation (tightly bound anion or dimerized with loosely bound anion) during the doping process, which is controlled by the bulkiness of the N-substitution and the Lewis basicity of the counteranion. As a result, BBL doped with benzyl viologen monochloride showed the highest conductivities with reasonably high Seebeck coefficients while BBL doped with hexyl viologen monochloride showed inferior conductivities and Seebeck coefficients
ACS Applied Polymer Materials published new progress about 47369-00-6. 47369-00-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Salt,Benzene,Organic ligands for MOF materials,Nitrogen containing MOF ligands,Nitrogen containing MOF ligands, name is 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride, and the molecular formula is C11H10N4, Quality Control of 47369-00-6.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem