Synthesis and Electrochemical Properties of Oligo- and Poly(thienylphenylamine)s

Abstract

The oxidative polymerization of tris(thienylphenyl)amine derivatives was performed in acetonitrile by electrochemical and chemical methods. Oligomers were synthesized by stepwise coupling using coupling reactions. The polymer prepared using the trifunctional monomer on a Pt electrode showed significantly better redox behavior compared to that of the linear polymeric analogue. The branching polymers exhibit conductivity of 2-6 S/cm, which is more than 1 order of magnitude greater than the analogous linear polymer. The electropolymerization of trifunctional monomers provides the formation of a large amount of redox active polymers with a large capacity (ca. 40 mC/cm 2 ) and a good redox activity in the electron transfer of ferrocene on the electrode.

Redox-State Dependent Spectroscopic Properties of Porous Organic Polymers Containing Furan, Thiophene, and Selenophene

“…S2a, Supplementary Material) due to overlapping contributions from oxidation of the triarylamine core to its radical cation and oxidation of the furan ring. [15,18,19] This corresponds well to the electrochemical data previously reported for the 2,5-bis [4-…”

“…22500 cm À1 are assigned to localised aromatic p -p* transitions of the triarylamine core and thiophene linker. [19] No EPR signals were observed for the neutral POP-S or POP-Se polymers (Fig. S5, Supplementary Material), which is supported by the lack of bands in the NIR region of the solid state UV/vis/NIR spectrum.…”

Electrical and magnetic properties of electro-oxidative polymerized poly(tris(thienylphenyl)amine)s

“…The 1 H-and 13 C NMR spectra were measured using a JEOL 400 MHz FT-NMR (JMN 400) in THF-d 8 . The MALDI-TOF mass spectra were measured by a Shimadzu-Kratos KOMPACT MALDI SEQ using dithranol as the matrix.…”

“…The resulting oligomers showed significantly better redox properties and conductivity compared with the linear types, because the branched structure is advantageous for electron and hole transfers [8,9]. Moreover, when the oligomers were used for hole-transport and/or the emitting layers of organic light emitting diodes (OLED), the device that used more branched oligomers showed higher brightness and luminance efficiency than the others [10,11].…”

Electrochemical and spectrophotometric properties of polymers based on derivatives of di- and triphenylamines as promising materials for electronic applications

“…Consequently, the large amount of polymers with significantly better redox activity was formed. [19][20][21] Moreover, promising properties like high stability during repetitive oxidation-reduction cycles [22] have been shown by electrically active film of polytriphenylamine.…”