Photoluminescence in pyridine-based polymers: Role of aggregates
- 1 October 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 54 (13) , 9180-9189
- https://doi.org/10.1103/physrevb.54.9180
Abstract
We present a study of the morphology dependence of the photoluminescence (PL) properties of the pyridine-based polymers poly(p-pyridyl vinylene), poly(p-pyridine), and poly(p-pyridyl vinylene p-phenylene vinylene) (PPyVPV). The photoluminescence of solution samples is characterized by high quantum efficiency (>70% in PPyVPV), weak coupling to vibrational modes (Huang-Rhys parameter ∼0.5) and a single-exponential decay (radiative lifetime ∼1 ns). On the other hand, film samples display strongly redshifted, featureless emission with low quantum yield (1996 The American Physical Society.Keywords
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