n464537SE Academic Article uri icon

abstract

  • We report wavelength and time-resolved photoluminescence studies of isolated extended (1-10 m length) poly(3-hexylthiophene) (P3HT) nanofibers (xNFs) cast on glass from suspension. The PL spectra of xNFs show multiple vibronic replicas that appear to be associated with the existence of both H- and J-type aggregates. The PL spectra of xNFs made from regioregular (rr)- (93%) and highly regioregular (hrr)-P3HT (98%) both show similarities in PL spectra suggestive of common chain packing features, as well as subtle differences that can be attributed to higher long-range order in the hrr-xNFs. Specifically, PL spectral measurements on isolated xNFs made from highly regioregular (>98%) P3HT showed a red-shifted electronic origin (30 meV) and increased 0-0/0-1 PL intensity ratio for the J-type species, suggestive of enhanced structural coherence length and intrachain order.

published proceedings

  • J Phys Chem Lett

author list (cited authors)

  • Baghgar, M., Labastide, J., Bokel, F., Dujovne, I., McKenna, A., Barnes, A. M., ... Barnes, M. D.

publication date

  • January 1, 2012 11:11 AM