Photoluminescence of Poly-(Paraphenylene)

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Abstract
We present photoluminescence spectra for Poly-(para-phenylene) (PPP), which is synthesized by basicly two different methods. Yamamoto-PPP emits a strong blue-green structured fluorescence, whereas the fluorescence of the Kovacic-PPP is dominated by a structureless broad band in the red. The difference in the fluorescence spectra are discussed by means of polymerization induced defects.