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Issue 3, 2016
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Multi-luminescent switching of metal-free organic phosphors for luminometric detection of organic solvents

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Abstract

Metal-free organic phosphors can be an attractive smart optical sensing materials since, in such compounds, intersystem crossing (ISC) and the phosphorescence process are placed in subtle competition with fluorescence, internal conversion (IC), and non-radiative decay pathways. Here, we report a unique environment-dependent multi-luminescence switching behavior of metal-free organic phosphorescent materials. Through combined photophysical measurements and computational electronic structure analysis, we systematically investigated how physicochemical properties of organic solvents affect the photophysical pathways of the metal-free organic phosphors. By rationally adapting the finding into phosphor-doped electrospun polymer fibers, we developed a new luminometric sensory platform and achieved selective detection of eight different common organic solvents. The presented finding provides new possibilities for metal-free organic phosphors to be a novel class of smart optical sensory materials.

Graphical abstract: Multi-luminescent switching of metal-free organic phosphors for luminometric detection of organic solvents

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Publication details

The article was received on 20 Oct 2015, accepted on 25 Dec 2015 and first published on 04 Jan 2016


Article type: Edge Article
DOI: 10.1039/C5SC03986J
Citation: Chem. Sci., 2016,7, 2359-2363
  • Open access: Creative Commons BY-NC license
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    Multi-luminescent switching of metal-free organic phosphors for luminometric detection of organic solvents

    M. S. Kwon, J. H. Jordahl, A. W. Phillips, K. Chung, S. Lee, J. Gierschner, J. Lahann and J. Kim, Chem. Sci., 2016, 7, 2359
    DOI: 10.1039/C5SC03986J

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