期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 38, 页码 11552-11556出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201606388
关键词
bent-shaped molecule; liquid crystals; nematic phase; phase transition; tetragonal symmetry
资金
- Ministry of Education, Culture, Sports, Science and Technology in Japan [26410086]
- Grants-in-Aid for Scientific Research [26410086] Funding Source: KAKEN
We synthesized a novel banana-shaped molecule based on a 1,7-naphthalene central core that exhibits a distinct mesomorphism of the nematic-to-nematic phase transition. Both the X-ray profile and direct imaging of atomic force microscopy (AFM) investigations clearly indicates the formation of an anomalous nematic phase possessing a two-dimensional (2D) tetragonal lattice with a large edge (ca. 59 angstrom) directed perpendicular to the director in the low-temperature nematic phase. One plausible model is proposed by an analogy of skyrmion lattice in which two types of cylinders formed from left- and right-handed twist-bend helices stack into a 2D tetragonal lattice, diminishing the inversion domain wall.
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