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Studies of Temperature-Dependent Excimer-Monomer Conversion in Dendrimeric Antenna Supermolecules by Fluorescence Spectroscopy

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Abstract

Phenylacetylene (PA) dendrimer labeled with perylene (See Fig 1) is discovered to exhibit temperature-dependent emission spectra in certain organic solvents over the temperature range of 20-65°C. The monomer signal is increasing rapidly when temperature increases, while the excimer signal decreases slowly. Models of excimer formation and weakly associated pairs (M+M) dissociation dynamics are included, and the equilibrium constants at different temperatures are calculated. This behavior suggests potential applications in fluorescence-based thermometry.

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Authors and Affiliations

  1. Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA

    Youfu Caoa & Raoul Kopelman

  2. Department of Chemistry, University of Illinois, Urbana, IL, 61801

    Jeffrey S. Moore

Authors
  1. Youfu Caoa
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  2. Jeffrey S. Moore
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  3. Raoul Kopelman
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Caoa, Y., Moore, J.S. & Kopelman, R. Studies of Temperature-Dependent Excimer-Monomer Conversion in Dendrimeric Antenna Supermolecules by Fluorescence Spectroscopy. MRS Online Proceedings Library 651, 7271 (2000). https://doi.org/10.1557/PROC-651-T7.27.1

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  • DOI: https://doi.org/10.1557/PROC-651-T7.27.1

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