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Issue 26, 2014
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Tuning of the ground state in electron doped anthracene

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Abstract

High quality bulk samples of anthracene (AN) doped with potassium (K) in 1 : 1 and 2 : 1 stoichiometries were successfully prepared by a method involving a room temperature solid-state mechanical diffusion process prior to intercalation reactions during heat treatment, and their physical properties were studied using both magnetic and optical measurements. The transfer of almost one electron from K to AN in K1(AN) was confirmed by SQUID and ESR measurements. A pronounced magnetic hump centered at 150 K associated with antiferromagnetic interactions was observed, which can most likely be interpreted in terms of on-site Coulomb repulsions of the Mott insulating states. Optical spectra of K1(AN) clearly showed the insulating states, as well as the electron occupation of the LUMO-derived band of AN. Our results demonstrated tuning of the ground state of a typical bulk hydrocarbon by alkali metal intercalation.

Graphical abstract: Tuning of the ground state in electron doped anthracene

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Article information


Submitted
08 Jan 2014
Accepted
10 Apr 2014
First published
10 Apr 2014

Dalton Trans., 2014,43, 10040-10045
Article type
Paper

Tuning of the ground state in electron doped anthracene

Q. T. N. Phan, S. Heguri, Y. Tanabe, H. Shimotani, T. Nakano, Y. Nozue and K. Tanigaki, Dalton Trans., 2014, 43, 10040
DOI: 10.1039/C4DT00071D

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