Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1517484 | Journal of Physics and Chemistry of Solids | 2010 | 5 Pages |
Abstract
The dynamics and orientation of dimers accompanying the formation and destruction of hydrogen bonds in the nematic phases of 4-n-hexylbenzoic acid (6BA) were studied by 13C and 2H NMR. The orientational order parameter S in the nematic phase was estimated from the quadrupole splitting of the 2H NMR spectrum. The intermolecular interaction energy for the molecular order in the nematic phase decreased with increasing temperature. The flexibility of dimers due to the destruction of the hydrogen bond is closely related to a decrease in the intermolecular interaction energy. The proportion of 2H NMR spin-lattice relaxation time (T1) to S, which reveals the coupling of the orientational fluctuations with the hydrogen bonding processes, was observed.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
You Suzuki, Takashi Uta, Tomonori Ida, Motohiro Mizuno, Miwa Murakami, Masataka Tansho, Tadashi Shimizu,