Zwitterionic pyridinium derivatives of [closo-1-CB_9H_10]− and [closo-1-CB_11H_12]− as high Δε additives to a nematic host
| dc.contributor.author | Pecyna, Jacek | |
| dc.contributor.author | Pociecha, Damian | |
| dc.contributor.author | Kaszynski, Piotr | |
| dc.date.accessioned | 2016-03-31T09:19:59Z | |
| dc.date.available | 2016-03-31T09:19:59Z | |
| dc.date.issued | 2013 | |
| dc.identifier.uri | http://hdl.handle.net/11089/17589 | |
| dc.description.abstract | Substituted closo-carbaborate–pyridinium zwitterions were prepared in 35–50% yield by reacting 1-amino-closo-1-carbaborates with 4-alkoxypyrylium triflates. Two of the new materials, 1[6]d and 2[10]b, exhibit a high temperature SmA phase, whose stability is driven by dipolar interactions. Solution studies in a nematic host, ClEster, demonstrated high positive dielectric anisotropy of these new compounds (Δε ≈ +50) resulting from a longitudinal molecular dipole moment of about 20 D. | pl_PL |
| dc.description.sponsorship | This work was supported by the NSF grant DMR-1207585. We are grateful to Professor Roman Dąbrowski of Military University of Technology (Warsaw, Poland) for the gift of ClEster. We thank Ms. Amanda Doody for help with chiral HPLC analysis of 1[6]c. | pl_PL |
| dc.language.iso | en | pl_PL |
| dc.publisher | Royal Society of Chemistry | pl_PL |
| dc.relation.ispartofseries | Journal of Materials Chemistry C;9 | |
| dc.rights | Uznanie autorstwa 3.0 Polska | * |
| dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
| dc.title | Zwitterionic pyridinium derivatives of [closo-1-CB_9H_10]− and [closo-1-CB_11H_12]− as high Δε additives to a nematic host | pl_PL |
| dc.type | Article | pl_PL |
| dc.page.number | 1585-1591 | pl_PL |
| dc.contributor.authorAffiliation | Vanderbilt University, Department of Chemistry | pl_PL |
| dc.contributor.authorAffiliation | University of Warsaw, Department of Chemistry | pl_PL |
| dc.contributor.authorAffiliation | University of Łódź, Faculty of Chemistry | pl_PL |
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| dc.contributor.authorEmail | piotr.kaszynski@vanderbilt.edu | pl_PL |
| dc.identifier.doi | 10.1039/C3TC32351J | |
| dc.date.defence | 2014 | |
| dc.relation.volume | 2 | pl_PL |
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