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Raman Changes Induced by Electrochemical Oxidation of Poly(triarylamine)s: Toward a Relationship Between Molecular Structure Modifications and Charge Generation

Raman Changes Induced by Electrochemical Oxidation of Poly(triarylamine)s: Toward a Relationship Between Molecular Structure Modifications and Charge Generation

Thiago Cervantes, Guy Louarn, Henrique de Santana, Lukasz Skorka, Irena Kulszewicz-Bajer

J Phys Chem B. 2015 Jan 29;119(4):1756-67.

PMID: 25535843

Abstract:

Linear, alternating polymers of aromatic amines (p-phenylenediamine, bis(p-aminophenyl)amine, and diaminocarbazole) and either m-phenylene or 3,5-pyridine have been synthesized and characterized by electrochemical and spectroscopic means. The presence of radical cations in their electrochemically oxidized forms is manifested by new bands in the UV-vis-NIR spectra whose appearance can be correlated with reversible redox couples registered in the corresponding cyclic voltammograms at approximately the same potentials as well as with pronounced evolutions of their resonance Raman spectra. Detailed analysis of the Raman data gives information about the locations and the distribution of radical cations and spinless dication in the macromolecule. This approach can provide a new insight into the formation of high-spin states in these polymers.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP97702631	Poly(3,5 pyridine)		97702-63-1	Price

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