Synthesis of Polyaniline/Scarlet 3R as a Conductive Polymer

Takuya Yonehara; Hiromasa Goto

doi:10.3390/polym12030579

Synthesis of Polyaniline/Scarlet 3R as a Conductive Polymer

Polymers (Basel). 2020 Mar 5;12(3):579. doi: 10.3390/polym12030579.

Authors

Takuya Yonehara¹, Hiromasa Goto¹

Affiliation

¹ Department of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan.

Abstract

Polyaniline (PANI) was prepared in the presence of the acidic dye scarlet 3R. Color tuning was performed on PANI through doping-dedoping processes and by changing the solvent used during the optical absorption spectroscopic measurements. The chemical structure of the resulting polymer-dye composite was analyzed using infrared absorption spectroscopy, and it showed the occurrence of secondary doping in m-cresol. The shape of the UV-Vis optical absorption spectra for the composite solution is dependent on the types of organic solvents used during the analysis, which was influenced by the conformation of PANI and the ionic interactions between PANI and scarlet 3R.

Keywords: CIE; doping; polyaniline; scarlet 3R.