Exciton Dynamics in Poly(<i>p</i>-Pyridyl Vinylene)

J. W. Blatchford; S. W. Jessen; L. B. Lin; J. J. Lih; T. L. Gustafson; A. J. Epstein; D. K. Fu; M. J. Marsella; T. M. Swager; A. G. MacDiarmid; S. Yamaguchi; H. Hamaguchi

doi:10.1103/PhysRevLett.76.1513

Exciton Dynamics in Poly(p-Pyridyl Vinylene)

J. W. Blatchford, S. W. Jessen, L. B. Lin, J. J. Lih, T. L. Gustafson, A. J. Epstein, D. K. Fu, M. J. Marsella, T. M. Swager, A. G. MacDiarmid, S. Yamaguchi, and H. Hamaguchi

Phys. Rev. Lett. 76, 1513 – Published 26 February 1996

Abstract

We present results of picosecond photoinduced absorption (PA) and time-resolved photoluminescence studies on solid and solution forms of poly(p-pyridyl vinylene). The nearly identical PA response of all forms of the polymer reflects the generation of the same primary photoexcitation, a Couloumbically bound intrachain singlet exciton, and the absence of exotic species such as interchain excimers. The time dependence of the PA points to direct intersystem crossing as the origin of triplet excitons, ruling out generation of free carriers as a precursor to exciton formation.

Received 30 June 1995

DOI:https://doi.org/10.1103/PhysRevLett.76.1513

Authors & Affiliations

J. W. Blatchford¹, S. W. Jessen¹, L. B. Lin², J. J. Lih², T. L. Gustafson², A. J. Epstein^1,2, D. K. Fu³, M. J. Marsella³, T. M. Swager³, A. G. MacDiarmid³, S. Yamaguchi⁴, and H. Hamaguchi⁴

¹Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106
²Department of Chemistry, The Ohio State University, Columbus, Ohio 43210-1106
³Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
⁴Kanagawa Academy of Science and Technology, KSP East 301, 3-2-1 Sakato, Kawasaki 213, Japan