title: Polycatenar Mesogens with Various Degree of Flexibility of Molecular Structure.
abstract: A series of newly synthesised rod-like polycatenar mesogens forms columnar phases, with the number of molecules in the column cross section depending on the core rigidity. For non-symmetric molecules, an additional density modulation, namely helical arrangement of molecules with a periodicity of approximately 10 molecular distances develops along the columns. For one of the compounds, a new type of columnar liquid crystal phase with 3D positional order is observed. Introducing a stilbene unit in the mesogenic core enhances the fluorescent properties of the compounds. In the hexagonal columnar phase, polarised light emission is observed.
authors.affiliation: Department of Chemistry, Warsaw University, Pasteura 1, 02-093, Warsaw, Poland. jokos@chem.uw.edu.pl.
authors.forename: Joanna M
authors.initials: JM
authors.lastname: Wolska
authors.affiliation: Department of Chemistry, Warsaw University, Pasteura 1, 02-093, Warsaw, Poland.
authors.forename: Neha
authors.initials: N
authors.lastname: Topnani
authors.affiliation: Department of Chemistry, Warsaw University, Pasteura 1, 02-093, Warsaw, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Gorecka
authors.affiliation: Department of Chemistry, Warsaw University, Pasteura 1, 02-093, Warsaw, Poland.
authors.forename: Jozef
authors.initials: J
authors.lastname: Mieczkowski
authors.affiliation: Department of Chemistry, Warsaw University, Pasteura 1, 02-093, Warsaw, Poland.
authors.forename: Damian
authors.initials: D
authors.lastname: Pociecha
keywords: columnar phases; fluorescence; liquid crystals; monoclinic phase; polycatenar