Busson, P. published the artcilePreparation of Mesogen-Functionalized Dendrimers for Second-Order Nonlinear Optics, Application In Synthesis of 50670-76-3, the publication is Macromolecules (2002), 35(5), 1663-1671, database is CAplus.
Liquid crystalline dendrimers with peripheral mesogen-containing units have been prepared Multistep synthesis with several selective reactions was used in the preparation of the mesogen-containing mols., 4”-[10-(hydroxycarbonyl)decyloxy]phenyl 4-[4′-(2-(R)-octyloxy)-3′-nitrophenyl]benzoate and 4”-[10-(hydroxycarbonyl)decyloxy]biphenyl 4-[4′-(2-(R)-octyloxy)-3′-nitrophenyl]benzoate. Both mols. possessed an electron-accepting nitro group placed perpendicular to the long axis of the mols. in order to enhance the nonlinear optical activity. A second generation hydroxyl functional aliphatic dendrimer based on the dihydroxy acid, 2,2-bis(hydroxymethyl)propionic acid, was used as dendritic scaffold and was subsequently functionalized with the aforementioned groups. The purity and structure of the two liquid crystalline dendrimers were determined by 1H NMR spectroscopy, size exclusion chromatog., and elemental anal. The synthesis of both the mesogen-containing units and the liquid crystalline dendrimers is described in detail. Investigation of the liquid crystalline properties of the materials by differential scanning calorimetry and optical microscopy showed that they exhibited different mesophases, including the chiral smectic C phase. Ferroelec. switching was observed in this tilted phase, and electrooptical properties, including tilt angle and spontaneous polarization measurements, were investigated. Finally, the nonlinear optical properties of one of the materials were preliminary characterized.
Macromolecules published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, Application In Synthesis of 50670-76-3.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics