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Issue 7, 2016
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Blue to near-IR energy transfer cascade within a dye-doped polymer matrix, mediated by a photochromic molecular switch

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Abstract

The spectroscopic properties of a poly(methyl methacrylate) matrix doped with a coumarin dye, a cyanine dye, and a photochromic spiropyran dye have been investigated. Before UV irradiation of the matrix, excitation of the coumarin dye results in minimal energy transfer to the cyanine dye. The energy transfer is substantially enhanced following UV irradiation of the matrix, which converts the colourless spiropyran isomer to the coloured merocyanine isomer, which then acts as an intermediate bridge by accepting energy from the coumarin dye and then donating energy to the cyanine dye. This demonstration of a switchable energy transfer cascade should help initiate new research directions in molecular photonics.

Graphical abstract: Blue to near-IR energy transfer cascade within a dye-doped polymer matrix, mediated by a photochromic molecular switch

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Publication details

The article was received on 01 Dec 2015, accepted on 14 Jan 2016 and first published on 27 Jan 2016


Article type: Communication
DOI: 10.1039/C5CP07400B
Citation: Phys. Chem. Chem. Phys., 2016,18, 5095-5098
  • Open access: Creative Commons BY license
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    Blue to near-IR energy transfer cascade within a dye-doped polymer matrix, mediated by a photochromic molecular switch

    V. Dryza, T. A. Smith and E. J. Bieske, Phys. Chem. Chem. Phys., 2016, 18, 5095
    DOI: 10.1039/C5CP07400B

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