233661-07-9Relevant articles and documents
Smectic and columnar liquid crystalline phases through charge-transfer interactions
Goldmann, Daniela,Nordsieck,Janietz, Dietmar,Frese, Thomas,Schmidt, Claudia,Wendorff, Joachim H.
, p. 337/[1379]-344/[1386] (2004)
New heterocyclic electron donors based on a 1,3,5-triazine nucleus are presented. Three phenyl rings are grafted to the triazine core either via secondary amino groups or by a direct C,C-linkage and a specific number of decyloxy chains is attached to the
Molecular design of benzothienobenzothiophene-cored columnar mesogens: Facile synthesis, mesomorphism, and charge carrier mobility
Liu, Chun-Xia,Wang, Hu,Du, Jun-Qi,Zhao, Ke-Qing,Hu, Ping,Wang, Bi-Qin,Monobe, Hirosato,Heinrich, Beno?t,Donnio, Bertrand
supporting information, p. 4471 - 4478 (2018/05/04)
Benzothienobenzothiophene (BTBT) liquid-crystalline semiconductors are arousing a lot of interest due to their long-range ordered, self-organizational abilities and high-charge carrier transport properties. In this work, we report the design and the straightforward synthesis of a homologous series of compounds containing the BTBT substructure by the successive Suzuki cross-coupling and FeCl3 oxidative Scholl cyclodehydrogenation reaction. Target π-conjugated aromatic, H-shaped sanidic mesogens self-organize into a classical hexagonal columnar mesophase over wide temperature ranges as deduced from polarized optical microscopy (POM), differential scanning calorimetry (DSC), and small-angle X-ray scattering (SAXS) investigations. UV/Vis absorption and photoluminescence spectra, measured in both solution and films, revealed strong photoluminescence with high quantum yields. The charge carrier mobility measured by the time-of-flight (TOF) technique showed a balanced ambipolar hole and electron mobility in the range of 10-3 cm2 V-1 s-1 between 100 and 230 °C in the mesophase. These BTBT-based columnar liquid crystals may represent attractive candidates to be incorporated within one-dimensional organic optoelectronic devices.
Thermotropic properties and molecular packing of discotic tristriazolotriazines with rigid substituents
Rieth, Thorsten,Marszalek, Tomasz,Pisula, Wojciech,Detert, Heiner
, p. 5000 - 5006 (2014/05/06)
Tristriazolotriazines with a threefold dialkoxyaryl substitution have been prepared by Huisgen reaction of cyanuric chloride and the corresponding tetrazoles. Although these dyes show a negative or inverted solvatochromism of the UV/Vis absorption, their
Columnar and smectic liquid crystals based on crown ethers
Steinke, Nelli,Frey, Wolfgang,Baro, Angelika,Laschat, Sabine,Drees, Christina,Nimtz, Manfred,Haegele, Constanze,Giesselmann, Frank
, p. 1026 - 1035 (2007/10/03)
Unsymmetrical benzo[15]-crown-5 ethers 5 with one lateral ortho-terphenyl unit bearing alkoxy side chains of varying chain lengths (C5-C14) were prepared from 3,4-dialkoxyphenylbromides 2. Complexation with metal salts MX (M = Na, Cs) afforded the corresp