289706-67-8Relevant academic research and scientific papers
METHOD FOR PRODUCING (1,1':4'1'')-TERPHENYL COMPOUNDS
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Page 9, (2010/02/06)
The invention relates to a method for producing [1,1':4',1'']-terphenyl compounds of the formulawhich comprises reacting a metal aryl of the formulawith a boric ester at -80 to 40° C. in the presence of an inert solvent, converting the reaction product by
Toward boronate ester mesogenic structures
Belloni, Maura,Manickam,Wang, Zehn-He,Preece, Jon A.
, p. 93 - 114 (2007/10/03)
This article describes efforts toward the development of a new core for calamitic mesogens based upon the introduction of an extended heteroaromatic boroncontaining ring. A series of tri-catenar mesogenic boronate ester derivatives of the 2-phenyl-1,3,2-benzodioxaborole has been synthesized and characterized. The flat central core appeared to be a suitable feature for these derivatives to support anisotropic alignment. Additionally, these derivatives should possess an inherent dipole in the core. However, thermal analysis (polarized optical microscopy and differential scanning calorimetry) did not reveal any mesophases.
The X-ray crystal structures and computational analysis of NH...π hydrogen bonded banana-shaped carbazole derivatives and thermal analysis of higher mesogenic homologues
Belloni, Maura,Manickam,Ashton, Peter R.,Kariuki, Benson M.,Preece, Jon A.,Spencer, Neil,Wilkie, John
, p. 17 - 35 (2007/10/03)
The synthesis of a series of banana-shaped mesogenic structures has been carried out, in which the bend unit is formed by the 3,6-substitution of carbazole by 4-alkoxyphenyl moieties. The crystal structures of the methoxy and propyloxy derivatives are reported with an analysis of the N-H...π interactions that are observed in the crystalline state. This analysis was aided by semi-empirical molecular orbital calculations. Additionally, the thermal analysis of the complete series has been carried out in order to investigate the phase properties of these materials. The 4-nonyloxyphenyl derivative displays two melting points by DSC and normal light microscopy, but yields non-birefringent liquids. The incorporation of photorefractive molecular units, such as carbazole. into anisotropic materials may offer many advantages over conventional electrical poling of photorefractive polymers.
