Synthesis and properties of hydroxylated core-fluorinated diamines and polyurethanes based on them with azobenzene nonlinear optical chromophores in the backbone
摘要:
We report on the synthesis of core-fluorinated phenylene- and biphenyldianilines, which was accomplished by diazotization reaction of diamines followed by coupling of the obtained diazonium salts with 2-[ethyl(phenyl)aminol-ethanol. Two types of core-fluorinated aromatic units were used in a molecular design of azo-chromophore monomers with enhanced second order nonlinear optical (NLO) properties: octafluorobiphenyl (OFB) and tetrafluorobenzene (TFB) ones. Polymerization of the monomers was performed to obtain polyurethanes with azo-chromophores in the main chain. Comparison of physical and optical properties of these polymers reveals that the main factor influencing the observed NLO activity of the latter is the inherent isomery of the macromolecular chains rather than a variation of the structure of electron-accepting groups. (C) 2013 Elsevier Ltd. All rights reserved.
Reaction of polyfluoroaromatics with o- and p- aminophenols in DMF
作者:T. N. Gerasimova、E. F. Kolchina、I. Yu. Kargapolova
DOI:10.1007/bf00957246
日期:1987.12
KOLCHINA, E. F.;GERASIMOVA, T. N., J. FLUOR. CHEM., 41,(1988) N, C. 345-356
作者:KOLCHINA, E. F.、GERASIMOVA, T. N.
DOI:——
日期:——
GERASIMOVA, T. N.;KOLCHINA, E. F.;KARGAPOLOVA, N. YU., IZV. AN CCCP. CEP. XIM.,(1987) N 12, 2814-2819
作者:GERASIMOVA, T. N.、KOLCHINA, E. F.、KARGAPOLOVA, N. YU.
DOI:——
日期:——
Interaction of polyfluoroaromatic compounds with o-aminophenol. The Smiles rearrangement in the polyfluoroaromatic series
作者:E.F. Kolchina、T.N. Gerasimova
DOI:10.1016/s0022-1139(00)81035-0
日期:1988.12
The reactions of polyfluoroaromatic compounds containing an electron-attractingsubstituent other than fluorine in the aromatic ring with o-aminophenol proceed at the amino or hydroxy group and lead to the corresponding hydroxydiarylamines (in neutral media) or aminodiaryl ethers (in alkaline media). The latter compounds, unlike 2,3,4,5,6-pentafluoro- 2'-aminodiphenyl ether, are transformed in dimethylformamide
Synthesis and properties of hydroxylated core-fluorinated diamines and polyurethanes based on them with azobenzene nonlinear optical chromophores in the backbone
We report on the synthesis of core-fluorinated phenylene- and biphenyldianilines, which was accomplished by diazotization reaction of diamines followed by coupling of the obtained diazonium salts with 2-[ethyl(phenyl)aminol-ethanol. Two types of core-fluorinated aromatic units were used in a molecular design of azo-chromophore monomers with enhanced second order nonlinear optical (NLO) properties: octafluorobiphenyl (OFB) and tetrafluorobenzene (TFB) ones. Polymerization of the monomers was performed to obtain polyurethanes with azo-chromophores in the main chain. Comparison of physical and optical properties of these polymers reveals that the main factor influencing the observed NLO activity of the latter is the inherent isomery of the macromolecular chains rather than a variation of the structure of electron-accepting groups. (C) 2013 Elsevier Ltd. All rights reserved.