dc.creator | Lehmann, Matthias | |
dc.creator | Jahr, Michael | |
dc.creator | Donnio, Bertrand | |
dc.creator | Graf, Robert | |
dc.creator | Gemming, Sibylle | |
dc.creator | Popov, Igor | |
dc.date.accessioned | 2022-04-05T14:17:51Z | |
dc.date.available | 2022-04-05T14:17:51Z | |
dc.date.issued | 2008 | |
dc.identifier.issn | 0947-6539 | |
dc.identifier.uri | http://rimsi.imsi.bg.ac.rs/handle/123456789/291 | |
dc.description.abstract | Star-shaped mesogens with a phloroglucinol or a trimesic acid core and oligobenzoate arms with up to five repeating units have been synthesised. non-conventional mesogens form various columnar mesophases over a broad temperature range. The liquid-crystal phases were characterised by optical microscopy, differential scanning calorimetry, X-ray diffraction, dilatometry and solid-state NMR spectroscopy. In addition to the high-temperature hexagonal columnar phases, the columnar self-assemblies undulate upon cooling and consequently form higher-ordered body-centred orthorhombic columnar 3D structures. A model of E-shaped folded conformers helically displaced along the columns is proposed. Helical preorganisation in the hexagonal phase precedes the transition to the low-temperature phases. Space filling and nano-segregation compete in the self-organisation process, thus aliphatic chains and the polar oligobenzoate scaffold are not perfectly separated in these star-shaped mesogens. | en |
dc.publisher | Wiley-V C H Verlag Gmbh, Weinheim | |
dc.rights | restrictedAccess | |
dc.source | Chemistry-A European Journal | |
dc.subject | x-ray diffraction | en |
dc.subject | star-shaped mesogens | en |
dc.subject | solid-state NMR spectroscopy | en |
dc.subject | oligobenzoates | en |
dc.subject | liquid crystals | en |
dc.title | Star-shaped oligobenzoates: Non-conventional mesogens forming columnar helical mesophases | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 3576 | |
dc.citation.issue | 12 | |
dc.citation.other | 14(12): 3562-3576 | |
dc.citation.rank | aM21 | |
dc.citation.spage | 3562 | |
dc.citation.volume | 14 | |
dc.identifier.doi | 10.1002/chem.200700922 | |
dc.identifier.pmid | 18300216 | |
dc.identifier.scopus | 2-s2.0-45449113523 | |
dc.identifier.wos | 000255702800011 | |
dc.type.version | publishedVersion | |