Electropolymerized Polythiophenes Bearing Pendant Nitroxide Radicals Academic Article uri icon

abstract

  • 2016 American Chemical Society. We report a facile way to synthesize polythiophenes carrying pendant 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO) radicals, here called PTATs, by electropolymerization in boron trifluoride diethyl etherate (BFEE). The spacing between the TEMPO radical and the polythiophene backbone is varied by an alkyl spacer (n = 2, 4, 6), and the electronic and electrochemical properties are examined using UV-vis spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. Film morphologies are also studied via scanning electron microscopy (SEM) and atomic force microscopy (AFM), which show that the longer octyl chain placed between thiophene and TEMPO effectively suppresses aggregation. The highest conductivity and electroactivity are observed for n = 4 and n = 6, respectively. Such morphology differences provide an opportunity to better understand the charge transport and energy storage properties in electronic materials. (Graph Presented).

published proceedings

  • ACS Macro Letters

altmetric score

  • 1

author list (cited authors)

  • Li, F., Zhang, Y., Kwon, S. R., & Lutkenhaus, J. L.

citation count

  • 35

complete list of authors

  • Li, Fei||Zhang, Yanpu||Kwon, Se Ra||Lutkenhaus, Jodie L

publication date

  • March 2016