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Updated: Jul 14, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Liquid crystalline derivatives of bis(tricarbollide)Fe(II)
Adam Januszko1, Piotr Kaszynski, Bohumír Grüner
1Organic Materials Research Group, Department of Chemistry, Vanderbilt University, Box 1822 Station B, Nashville, Tennessee 37235, USA.
Abstract:
A series of Schiff bases 2[n] with n = 4, 6, 8, 10, 12, and 18 was prepared by the condensation of 9,9'-diaminobis(tricarbollide)Fe(II) (1b) with appropriate 4-alkoxybenzaldehydes (3[n]). Thermal analysis showed that they form nematic and smectic phases with clearing temperatures above 200 degrees C. Comparative studies of series 2[n] and its organic analogs demonstrated that the effectiveness of bis(tricarbollide)Fe(II) in supporting liquid crystalline phases is between that of benzene and biphenyl for n < or = 18 and lower than that of benzene for n = infinity. The photophysical properties were investigated for the butoxy derivative 2[4] and modeled using ZINDO calculations.
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