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Issue 13, 2018
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Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons

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Abstract

We report the first class of stable, two-dimensional (2D) anti-ferromagnetically coupled dendritic polyradicaloids. A kinetically blocked fluorenyl radical was used to build up the first and second generation dendrons FR-G1 and FR-G2 containing three and seven fluorenyl units, respectively. The neighboring fluorenyl radicals in FR-G1 and FR-G2 show moderate anti-ferromagnetic exchange interaction, resulting in a doublet and quartet ground state, respectively, with a small doublet–quartet energy gap. From FR-G1 to FR-G2, the energy gap decreased and the two-photon absorption was enhanced owing to more extended 2D π-conjugation. Both compounds showed multiple redox waves due to their polyradical character.

Graphical abstract: Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons

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Publication details

The article was received on 29 Dec 2017, accepted on 28 Feb 2018 and first published on 28 Feb 2018


Article type: Edge Article
DOI: 10.1039/C7SC05493A
Citation: Chem. Sci., 2018,9, 3395-3400
  • Open access: Creative Commons BY license
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    Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons

    J. Wang, G. Kim, M. E. Sandoval-Salinas, H. Phan, T. Y. Gopalakrishna, X. Lu, D. Casanova, D. Kim and J. Wu, Chem. Sci., 2018, 9, 3395
    DOI: 10.1039/C7SC05493A

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