Thermotropic Liquid-Crystalline Properties of Viologens Containing 4-n-alkylbenzenesulfonates†
AbstractA series of viologens containing 4-n-alkylbenzenesulfonates were synthesized by the metathesis reaction of 4-n-alkylbenzenesulfonic acids or sodium 4-n-alkylbezenesulfonates with the respective viologen dibromide in alcohols. Their chemical structures were characterized by Fourier Transform Infrared, 1H and 13C Nuclear Magnetic Resonance spectra and elemental analysis. Their thermotropic liquid-crystalline (LC) properties were examined by differential scanning calorimetry and polarizing optical microscopy. They formed LC phases above their melting transitions and showed isotropic transitions. As expected, all the viologen salts had excellent stabilities in the temperature range of 278–295 °C as determined by thermogravimetric analysis. View Full-Text
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Bhowmik, P.K.; Chang, A.; Kim, J.; Dizon, E.J.; Principe, R.C.G.; Han, H. Thermotropic Liquid-Crystalline Properties of Viologens Containing 4-n-alkylbenzenesulfonates. Crystals 2019, 9, 77.
Bhowmik PK, Chang A, Kim J, Dizon EJ, Principe RCG, Han H. Thermotropic Liquid-Crystalline Properties of Viologens Containing 4-n-alkylbenzenesulfonates. Crystals. 2019; 9(2):77.Chicago/Turabian Style
Bhowmik, Pradip K.; Chang, Anthony; Kim, Jongin; Dizon, Erenz J.; Principe, Ronald C.G.; Han, Haesook. 2019. "Thermotropic Liquid-Crystalline Properties of Viologens Containing 4-n-alkylbenzenesulfonates." Crystals 9, no. 2: 77.
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