Polyphosphazene polymers are prepared which contain units represented by the formulas: wherein X is a nitrogen-containing radical represented by the formulas -NIIIIIICOOR or or in which R and R are selected from the group consisting of alkyl groups containing from 1 to 12 carbon atoms, cyclo...
Furthermore, a lowering in pH induces degradation of the polymers, and fine-tuning of the degradation can be exploited to control the rate of release of the drugs. When highly hydrophilic drugs are loaded, the release rate can be reduced by manipulating the number of polyacetals used in the...
What are the applications of transparent polymers? What are the test methods for calculating the transparency of polymers? What are the light transmittance values of several plastics? Transparent Polymers — Definition and Examples Transparency or transmission of visible light is characterized by light tr...
It is well known that the values of D in octahedral cobalt(II) complexes calculated by the DFT methodology are often much smaller than the real ones, in contrast to what occurs through post-Hartree Fock, complete active space (CAS) and second-order N-electron valence state perturbation theory...
Supramolecular polymers exhibit fascinating structures, and their properties, and thus applications, depend both on the strength and dynamics of the non-covalent bonds and on the functional properties of the monomeric building blocks. In this Review, we
Hundreds of compounds are released from roots from long sugar polymers to central metabolites47,48. The mechanisms that regulate the production and spatial patterns of rhizodeposits are largely differentiated based on the molecular weight of their outputs. For the secretion of low molecular weight exuda...
With the development of nanotechnologies, novel nanocarriers are gradually replacing the viral vectors. The commonly found nano-vehicles for NA therapies transportation are summarized in Supplementary Fig.1and are based on lipids (liposomes, solid lipid nanoparticles…), polymers (micelles, dendrimers, na...
In humans, the three types of cone cells that perceive R, G, and B wavelengths are termed short (S), medium (M), and long (L) cones, respectively30. Each type of cone is sensitive to a particular wavelength band and possesses unique sensitivity levels, forming what is known as a ...
This process requires the use of polymers with fairly low melting temperatures (i.e., <150° C.), glass transition temperatures above room temperature, and core materials which are thermo-stable. In solvent evaporation microencapsulation, the polymer is typically dissolved in a water immiscible ...
Segmented polymers having a linear polymeric backbone with linear polymer branches attached thereto through ureido groups and process for preparing the same United States Patent 2882259 Application Number: US55527155A Publication Date: 04/14/1959