New room temperature nematogens by cyano tail termination of alkoxy and alkylcyanobiphenyls and their anchoring behavior on metal salt-decorated surface
| Autor: | Nanqi Bao, Jake I. Gold, Nicholas L. Abbott, Kunlun Wang, Manos Mavrikakis, Huaizhe Yu, Prabin Rai, Robert J. Twieg, Tibor Szilvási |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science 010405 organic chemistry Mesogen Salt (chemistry) Anchoring 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Metal chemistry Liquid crystal visual_art Polymer chemistry visual_art.visual_art_medium Alkoxy group General Materials Science 0210 nano-technology Alkyl |
| DOI: | 10.6084/m9.figshare.9912437 |
| Popis: | A series of cyano tail-terminated alkoxy and alkyl cyanobiphenyl compounds and some cyano-p-terphenyl derivatives were synthesized and mesogenic properties described. Comparison with the K series and M series indicates that the terminal cyano group generally enhances the supercooling of the molecules. Furthermore, several binary LC mixtures formed by the cyano tail-terminated compounds were found exhibiting promising room temperature nematic phases ranges comparable to the commercial quaternary mixture E7. The equimolar binary mixture of CN5OCB and CN7OCB shows homeotropic ordering at the metal salts-decorated surfaces and planar ordering at the free surface, which is consistent with GBE values we calculated. As such, these materials are promising candidates for sensor devices which display a rapid response to a variety of analytes. |
| Databáze: | OpenAIRE |
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