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Issue 27, 2016
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Molecular self-healing mechanisms between C60-fullerene and anthracene unveiled by Raman and two-dimensional correlation spectroscopy

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Abstract

The self-healing polymer P(LMA-co-MeAMMA) crosslinked with C60-fullerene has been studied by FT-Raman spectroscopy in combination with two-dimensional (2D) correlation analysis and density functional theory calculations. To unveil the molecular changes during the self-healing process mediated by the Diels–Alder equilibrium between 10-methyl-9-anthracenyl groups and C60-fullerene different anthracene–C60-fullerene adducts have been synthesized and characterized by time-, concentration- and temperature-dependent FT-Raman measurements. The self-healing process could be monitored via the C60-fullerene vibrations at 270, 432 and 1469 cm−1. Furthermore, the detailed analysis of the concentration-dependent FT-Raman spectra point towards the formation of anthracene–C60-fullerene adducts with an unusual high amount of anthracene bound to C60-fullerene in the polymer film, while the 2D correlation analysis of the temperature-dependent Raman spectra suggests a stepwise dissociation of anthracene–C60-fullerene adducts, which are responsible for the self-healing of the polymer.

Graphical abstract: Molecular self-healing mechanisms between C60-fullerene and anthracene unveiled by Raman and two-dimensional correlation spectroscopy

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Publication details

The article was received on 20 May 2016, accepted on 15 Jun 2016 and first published on 15 Jun 2016


Article type: Paper
DOI: 10.1039/C6CP03464K
Citation: Phys. Chem. Chem. Phys., 2016,18, 17973-17982
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    Molecular self-healing mechanisms between C60-fullerene and anthracene unveiled by Raman and two-dimensional correlation spectroscopy

    R. Geitner, J. Kötteritzsch, M. Siegmann, R. Fritzsch, T. W. Bocklitz, M. D. Hager, U. S. Schubert, S. Gräfe, B. Dietzek, M. Schmitt and J. Popp, Phys. Chem. Chem. Phys., 2016, 18, 17973
    DOI: 10.1039/C6CP03464K

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