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Issue 10, 2016
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Self-sorted photoconductive xerogels

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Abstract

We show that a perylene bisimide (PBI)-based gelator forms self-sorted mixtures with a stilbene-based gelator. To form the self-sorted gels, we use a slow pH change induced by the hydrolysis of glucono-δ-lactone (GdL) to gluconic acid. We prove that self-sorting occurs using NMR spectroscopy, UV-Vis spectroscopy, rheology, and viscometry. The corresponding xerogels are photoconductive. Importantly, the wavelength dependence of the photoconductive films is different to that of the films formed from the perylene bisimide alone. Transient absorption spectroscopy of the xerogels reveals changes in the spectrum of the PBI on the picosecond timescale in the presence of stilbene with a PBI radical anion being formed within 10 ps when the stilbene is present. The ability to form the PBI radical anion under visible light leads to the enhanced spectral response of the multicomponent gels. These systems therefore have potential as useful visible-active optoelectronics.

Graphical abstract: Self-sorted photoconductive xerogels

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Publication details

The article was received on 16 Jun 2016, accepted on 01 Jul 2016 and first published on 01 Jul 2016


Article type: Edge Article
DOI: 10.1039/C6SC02644C
Citation: Chem. Sci., 2016,7, 6499-6505
  • Open access: Creative Commons BY license
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    Self-sorted photoconductive xerogels

    E. R. Draper, J. R. Lee, M. Wallace, F. Jäckel, A. J. Cowan and D. J. Adams, Chem. Sci., 2016, 7, 6499
    DOI: 10.1039/C6SC02644C

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