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Nuclear magnetic resonance study of the smectic-cholesteric phase transition in a dimesogenic liquid crystal |
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| Authors: | Jun Hee Han JS Kim Jun Kue Park Kyu Won Lee J-I Jin EH Choi Cheol Eui Lee |
| Institution: | 1. Department of Physics, Korea University, Seoul 136-713, Republic of Korea;2. Department of Chemistry, Korea University, Seoul 136-713, Republic of Korea;3. Department of Electrophysics, Kwangwoon University, Seoul 130-701, Republic of Korea |
| Abstract: | Nuclear magnetic resonance (NMR) spectroscopy has provided a unique opportunity to study the characteristic smectic-A to chiral nematic phase transition in a dimesogenic liquid crystal (“KI-5S”). The order parameters in the liquid crystalline phases were obtained from the 2H NMR quadrupole splitting and 13C NMR chemical shift measurements, manifesting a first-order smectic-nematic phase transition. |
| Keywords: | Dimesogenic liquid crystal Smectic to chiral nematic phase transition Order parameters Deuterium NMR and carbon NMR |
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