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Issue 12, 2018
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Magnetic behaviour of bent-core mesogens derived from the 1,4-dihydrobenzo[e][1,2,4]triazin-4-yl

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Abstract

A series of bent-core mesogens 2[m,n] and 3[4,6][6,n] derived from the 1,4-dihydrobenzo[e][1,2,4]triazin-4-yl radical and containing two partially fluorinated alkyl tails and the non-fluorinated derivative 1[12] were prepared and investigated by optical, thermal, XRD and magnetic methods. All compounds with six CF2 units in each terminal tail (2[6,n]) exhibit a smectic A phase with clearing temperatures in a range of 150–180 °C. Introduction of two different alkyl chain lengths into the molecular structure of 2 depressed the SmA–I transition temperature to about 120 °C in 3[4,6][6,n]. Solid-state EPR and magnetic susceptibility measurements (SQUID) for 3[4,6][6,8] revealed paramagnetic behaviour with weak intermolecular spin–spin interactions in the SmA phase suggesting low organization of the spin containing molecular units.

Graphical abstract: Magnetic behaviour of bent-core mesogens derived from the 1,4-dihydrobenzo[e][1,2,4]triazin-4-yl

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Publication details

The article was received on 29 Jan 2018, accepted on 24 Feb 2018 and first published on 26 Feb 2018


Article type: Paper
DOI: 10.1039/C8TC00487K
Citation: J. Mater. Chem. C, 2018,6, 3079-3088
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    Magnetic behaviour of bent-core mesogens derived from the 1,4-dihydrobenzo[e][1,2,4]triazin-4-yl

    S. Kapuściński, A. Gardias, D. Pociecha, M. Jasiński, J. Szczytko and P. Kaszyński, J. Mater. Chem. C, 2018, 6, 3079
    DOI: 10.1039/C8TC00487K

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