Archives for Chemistry Experiments of 120-21-8

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 120-21-8 is helpful to your research. Computed Properties of C11H15NO.

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 120-21-8, Name is 4-Diethylaminobenzaldehyde, SMILES is O=CC1=CC=C(N(CC)CC)C=C1, belongs to benzoxazole compound. In a document, author is Zhang, Mengting, introduce the new discover, Computed Properties of C11H15NO.

Mesomorphic properties improved via lateral fluorine substituent on benzoxazole-terminated mesogenic compounds

Here, laterally monofluorinated heterocyclic mesogenic compounds, 2-[4-[2-[4-alkoxy-phenyl]ethynyl]-3-fluorophenyl]-benzoxazole derivatives (nPEFPBx) with hydrogen, methyl and nitro terminal substituents (coded as nPEFPBH, nPEFPBM and nPEFPBN, respectively) at 5-position of benzoxazole unit, are synthesised and characterised. They display enantiotropic nematic mesophase with mesophase ranges of 22-30 degrees C and 32-39 degrees C on heating and cooling for nPEFPBH, 67-92 degrees C and 87-115 degrees C for nPEFPBM, 31-84 degrees C and 42-51 degrees C for nPEFPBN (n < 7), respectively, which is better than nonfluorinated and laterally difluorinated analogous. Improved mesophase property is ascribed to reduced dipole moment resulting from introduction of lateral fluorine atom in opposite direction of polar benzoxazole unit. This indicates that monofluorine substituent contributes to improve nematic mesophase for benzoxazole-terminated mesogenic compounds. In addition, the compounds nPEFPBx have high birefringence of 0.513-0.650 because of large p-conjugated mesogenic core composed of benzene, ethynyl and benzoxazole groups, which suggests a possible application in liquid crystal mixture to enhance birefringence. Meanwhile, except nPEFPBN, the compounds nPEFPBx show intense photoluminescence emission at 406-407 nm in methylene chloride solution with exciting them at absorption maxima. [GRAPHICS] . The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 120-21-8 is helpful to your research. Computed Properties of C11H15NO.

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem