Synthesis, mesomorphic and dielectric properties of 4-(cyanomethoxy)phenyl 4-alkoxybenzoates, 4-(cyanomethoxy)-4′-alkoxyazo- and -azoxybenzenes
摘要:
Preparation methods were developed for homologs of 4-(cyanomethoxy)phenyl 4-alkoxybenzoates (C-7, C-8, C-9), 4-(cyanomethoxy)-4'-alkoxyazo (C-2, C-3, C-6), -azoxybenzenes (C-3, C-6) whose composition and structure were proved by elemental analysis and H-1 NMR spectra. 4-(Cyanomethoxy) group destabilizes the mesophase, consequently, only four among the compounds obtained exhibit the thermotropic nematic mesomorphism.
A series of 4-substituted phenylguanidinium derivatives was synthesized and its antimicrobial activity was evaluated in vitro against eight potentially pathogenic strains of fungi.
Griffin, A. C.; Vaidya, S. R., Molecular Crystals and Liquid Crystals (1969-1991), 1989, vol. 173, p. 85 - 88
作者:Griffin, A. C.、Vaidya, S. R.
DOI:——
日期:——
High-Density Noncovalent Functionalization of DNA by Electrostatic Interactions
作者:Wei Chen、Jennifer Y. Gerasimov、Pei Zhao、Kai Liu、Andreas Herrmann
DOI:10.1021/jacs.5b05432
日期:2015.10.14
Preserving DNA hybridization in organic solvents could someday serve to significantly extend the applicability of DNA-based technologies. Here, we present a method that can be used to solubilize double-stranded DNA at high concentrations in organic media. This method requires first precipitating a DNA molecule from the aqueous environment with an anilinium derivative and subsequently exchanging this moiety with an amine-containing surfactant in organic solvent. We demonstrate that this method yields complete exchange of the surfactant and allows for the modification of DNA with hydrophobic primary, secondary, and tertiary alkylamines and ordered functional lcsystems. Using this approach, we fabricate a multichromophoric light harvesting system that would be unattainable by traditional methods. Additionally, this method makes it possible to use small, hydrophilic molecules to solubilize DNA in organic solvents, which reduces the shielding around the macromolecule more accessible for further chemical modification. We believe that this approach will prove beneficial in expanding the scope of DNA-based nano- and biotechnologies. DNA and makes the tremendously
Synthesis, mesomorphic and dielectric properties of 4-(cyanomethoxy)phenyl 4-alkoxybenzoates, 4-(cyanomethoxy)-4′-alkoxyazo- and -azoxybenzenes
作者:S. A. Kuvshinova、V. A. Burmistrov、I. V. Novikov、K. M. Litov、V. V. Aleksandriiskii、O. I. Koifman
DOI:10.1134/s1070428014050017
日期:2014.5
Preparation methods were developed for homologs of 4-(cyanomethoxy)phenyl 4-alkoxybenzoates (C-7, C-8, C-9), 4-(cyanomethoxy)-4'-alkoxyazo (C-2, C-3, C-6), -azoxybenzenes (C-3, C-6) whose composition and structure were proved by elemental analysis and H-1 NMR spectra. 4-(Cyanomethoxy) group destabilizes the mesophase, consequently, only four among the compounds obtained exhibit the thermotropic nematic mesomorphism.