Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent core molecules
Liquid crystals formed by acute-angle bent core (ABC) molecules with a 1,7 naphthalene central core show an intriguing phase behavior with the nematic phase accompanied by poorly understood additional phases. In this work, we characterize the physical properties of an ABC material, such as birefring...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-09-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033371 |
| _version_ | 1827286015811780608 |
|---|---|
| author | Bing-Xiang Li Yuriy A. Nastishin Hao Wang Min Gao Sathyanarayana Paladugu Ruipeng Li Masafumi Fukuto Quan Li Sergij V. Shiyanovskii Oleg D. Lavrentovich |
| author_facet | Bing-Xiang Li Yuriy A. Nastishin Hao Wang Min Gao Sathyanarayana Paladugu Ruipeng Li Masafumi Fukuto Quan Li Sergij V. Shiyanovskii Oleg D. Lavrentovich |
| author_sort | Bing-Xiang Li |
| collection | DOAJ |
| description | Liquid crystals formed by acute-angle bent core (ABC) molecules with a 1,7 naphthalene central core show an intriguing phase behavior with the nematic phase accompanied by poorly understood additional phases. In this work, we characterize the physical properties of an ABC material, such as birefringence, dielectric permittivities, elastic constants, and surface alignment and present x-ray diffraction and transmission electron microscopy studies of their ordering. The ABC molecular shape resembling the letter λ yields a very small splay elastic constant in the uniaxial nematic phase and results in the formation of a tetragonal positionally ordered columnar phase consisting of alternating polar and apolar molecular columns with a uniform uniaxial director that can be bent but not splayed. |
| first_indexed | 2024-04-24T10:24:24Z |
| format | Article |
| id | doaj.art-f9cf877b79e7423a80ae276c5e3dfa3c |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:24:24Z |
| publishDate | 2020-09-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-f9cf877b79e7423a80ae276c5e3dfa3c2024-04-12T17:00:11ZengAmerican Physical SocietyPhysical Review Research2643-15642020-09-012303337110.1103/PhysRevResearch.2.033371Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent core moleculesBing-Xiang LiYuriy A. NastishinHao WangMin GaoSathyanarayana PaladuguRuipeng LiMasafumi FukutoQuan LiSergij V. ShiyanovskiiOleg D. LavrentovichLiquid crystals formed by acute-angle bent core (ABC) molecules with a 1,7 naphthalene central core show an intriguing phase behavior with the nematic phase accompanied by poorly understood additional phases. In this work, we characterize the physical properties of an ABC material, such as birefringence, dielectric permittivities, elastic constants, and surface alignment and present x-ray diffraction and transmission electron microscopy studies of their ordering. The ABC molecular shape resembling the letter λ yields a very small splay elastic constant in the uniaxial nematic phase and results in the formation of a tetragonal positionally ordered columnar phase consisting of alternating polar and apolar molecular columns with a uniform uniaxial director that can be bent but not splayed.http://doi.org/10.1103/PhysRevResearch.2.033371 |
| spellingShingle | Bing-Xiang Li Yuriy A. Nastishin Hao Wang Min Gao Sathyanarayana Paladugu Ruipeng Li Masafumi Fukuto Quan Li Sergij V. Shiyanovskii Oleg D. Lavrentovich Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent core molecules Physical Review Research |
| title | Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent core molecules |
| title_full | Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent core molecules |
| title_fullStr | Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent core molecules |
| title_full_unstemmed | Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent core molecules |
| title_short | Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent core molecules |
| title_sort | liquid crystal phases with unusual structures and physical properties formed by acute angle bent core molecules |
| url | http://doi.org/10.1103/PhysRevResearch.2.033371 |
| work_keys_str_mv | AT bingxiangli liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT yuriyanastishin liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT haowang liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT mingao liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT sathyanarayanapaladugu liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT ruipengli liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT masafumifukuto liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT quanli liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT sergijvshiyanovskii liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules AT olegdlavrentovich liquidcrystalphaseswithunusualstructuresandphysicalpropertiesformedbyacuteanglebentcoremolecules |