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Mindy Levine, Inja Song, Trisha L. Andrew, Steven E. Kooi and Timothy M. Swager Photoluminescent energy transfer from poly(phenyleneethynylene)s to near-infrared emitting fluorophores Journal of Polymer Science Part A: Polymer Chemistry 48

Article first published online: 25 JUN 2010 | DOI: 10.1002/pola.24123

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Blended thin films were fabricated which contain conjugated fluorescent polymers and near-infrared emitting fluorophores. Highly efficient energy transfer was observed from the polymer to the fluorophore, with nearly two orders of magnitude amplified fluorophore emission observed in the near-infrared spectral region. This amplified emission does not require appreciable spectral overlap between the polymer emission and fluorophore absorption spectra. Our results offer substantial possibilities in the design of highly sensitive turn-on fluorescent sensors with negligible background polymer emission in the spectral region of interest.

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