A new, 19 π-delocalized electrons planar Blatter radical building block was developed and used to obtain paramagnetic bent-core liquid crystals. The mesogens were investigated by optical, thermal, powder XRD and DFT methods in the pure form and as binary mixtures. Comparison of their properties with those of the classical Blatter radical analogues revealed that planarization of the central angular element results in a significantly higher stability of the mesophases and increased molecular organization suitable for the formation of ordered banana and columnar mesophases with tighter π-π interactions. These results indicate access to a new, potentially rich class of functional paramagnetic soft materials.

Department of Chemistry Middle Tennessee State University Murfreesboro TN 37132 USA

Faculty of Chemistry University of Łódź Tamka 12 91 403 Łódź Poland

Faculty of Chemistry University of Warsaw Zwirki i Wigury 101 02089 Warsaw Poland

Institute of Physics of the Czech Academy of Sciences Na Slovance 1999 2 182 21 Prague Czech Republic

Polish Academy of Sciences Sienkiewicza 112 90 363 Łódź Poland

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