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Issue 3, 2012
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Stable organic radical stacked by in situ coordination to rare earth cations in MOF materials

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Abstract

With the correct choice of the solvothermal conditions, we have achieved the unprecedented in situ formation of the free radical form of the anthraquinone-1,5-disulfonate molecule, and its favorable organization. The semiquinone radicals are coordinated to rare-earth cations to produce a 2D framework with a very high charge mobility and electric conductivity through the π–π-interactions. The existence of AQDS3−˙ anion radicals is proven on the base of: i) the electrical neutrality: elemental analyses for the different lanthanide RPF-8 bulks, the maximum residual electron densities in the structure, rule out the existence of any other neutralizing ion, ii) the geometrical modifications in the antraquinone molecules, and iii) although less definitive, due to the low magnetic moment μ = 0.39 μB, the exhibited paramagnetism for the La (3+) with no unpaired electrons.

Graphical abstract: Stable organic radical stacked by in situ coordination to rare earth cations in MOF materials

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Publication details

The article was received on 13 Jul 2011, accepted on 02 Oct 2011 and first published on 24 Nov 2011


Article type: Paper
DOI: 10.1039/C1RA00447F
RSC Adv., 2012,2, 949-955

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    Stable organic radical stacked by in situ coordination to rare earth cations in MOF materials

    F. Gándara, N. Snejko, A. D. Andrés, J. R. Fernandez, J. C. Gómez-Sal, E. Gutierrez-Puebla and A. Monge, RSC Adv., 2012, 2, 949
    DOI: 10.1039/C1RA00447F

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