78435-17-3Relevant academic research and scientific papers
Design and synthesis of novel calamitic and discotic materials based on the photorefractive carbazole unit
Manickam,Iqbal,Spencer,Ashton,Kumar,Donovan,Preece
experimental part, p. 84 - 100 (2011/05/03)
The incorporation of photorefractive molecular units, such as carbazole, into anisotropic materials (liquid crystals) may offer many advantages over conventional electrical poling of photorefractive polymers. Thus, a series of symmetric 3,6-disubstituted
Rewritable color recording media consisting of leuco dye and biphenyl developer with a long alkyl chain
Naito, Katsuyuki
, p. 1379 - 1384 (2007/10/03)
Media formulated using two compounds (a leuco dye and 4-alkoxyl-4′-hydroxybiphenyl) were colored in the amorphous state and colorless in the crystalline state. As the alkyl chain length of the biphenyl compound increased, the contrast ratio and thermal stability of the amorphous states increased. Additionally, the crystallization velocity increased for the media with a long alkyl chain. Leuco dyes with a high glass transition temperature also produced thermally stable amorphous states. The origin of the long alkyl chain effects is discussed.
Selective etherification of polyhydroxybenzenes using PEG 200 as solvent or cosolvent
Berdague, P.,Perez, F.,Courtieu, J.,Bayle, J. P.
, p. 475 - 480 (2007/10/02)
The monoalkylation of hydroquinone is performed using PEG 200 as a solvent or a cosolvent.The effect on the selectivity of the base strength, the temperature, and the percentage of cosolvent are discussed.The substituted phenols were found to behave differently upon etherification.When a carboxylic function is present in the ring, the hydroxybenzoic acids were selectively etherified using pure PEG and sodium hydroxyde as a base.Substituted diphenols were selectively etherified using a mixture of PEG and dioxan and potassium hydrogencarbonate as a base.Keywords - etherification / selectivity / polyhydroxybenzenes / polyethylene glycol
