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Aggregate Formation in Pyridine-Based Polymers

Published online by Cambridge University Press:  10 February 2011

J. W. Blatchford ,
S. W. Jessen ,
L. B. Lin ,
T. L. Gustafson ,
A. J. Epsteint ,
D. K Fu ,
H. L. Wang ,
T. M. Swager  and
A. G. Macdiarmid
J. W. Blatchford
Affiliation:
Department of Physics, The Ohio State University, Columbus, OH 43210
S. W. Jessen
Affiliation:
Department of Physics, The Ohio State University, Columbus, OH 43210
L. B. Lin
Affiliation:
Department of Chemistry, The Ohio State University, Columbus, OH 43210
T. L. Gustafson
Affiliation:
Department of Chemistry, The Ohio State University, Columbus, OH 43210
A. J. Epsteint
Affiliation:
Department of Physics, The Ohio State University, Columbus, OH 43210 Department of Chemistry, The Ohio State University, Columbus, OH 43210
D. K Fu
Affiliation:
Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104
H. L. Wang
Affiliation:
Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104
T. M. Swager
Affiliation:
Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104
A. G. Macdiarmid
Affiliation:
Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104
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Abstract

The spectroscopic properties of the pyridine-based polymer poly(p-pyridyl vinylene p-phenylene vinylene) (PPyVPV) are examined. The emission of PPyVPV in solution has small intrinsic Stokes shift with some vibronic structure. In contrast, emission from thick film samples is featureless, with a strong redshift of ˜0.5 eV versus solution. We attribute these observations to the formation of aggregate states in film samples. Time-resolved photoluminescence measurements are in accord with the diffusion of excitons to the aggregate sites. Photoinduced absorption also originates from excitons in aggregate states.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 413: Symposium W – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials III , 1995 , 671
Copyright
Copyright © Materials Research Society 1996

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References

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