摘要:
The design of electrochemically responsive halogen donors in redox-active polymer for switchable electrosorption and release of anions. A redox-active group such as ferrocene acts as an electron-withdrawing group, facilitating the delocalization of the electrons on the halogen atom. Upon the oxidation of the ferrocene moiety, the halogen atom forms a partial-positive charge (σ-hole) on the elongation of the C—I bond, resulting in strong binding with anions in cooperation with the hydrogen bonds on the cyclopentadienyl ring on the oxidized ferrocene. During reduction of ferrocene, halogen bonding is deactivated, releasing the bound anions reversibly.
摘要:
Embodiments of the present invention include a branched aromatic ionomer, and a process of making it, by co-polymerizing a first monomer comprising an aromatic moiety and an unsaturated alkyl moiety and a second monomer represented by the general formula: [R-AZ]y-MX wherein R is a hydrocarbon chain having from 2 to 40 carbons and at least one polymerizable unsaturation; A is an anionic group; M is a cationic group; Z is −1 or −2; X is +1, +2, +3, +4, or +5; and y is an integer having a value of from 1 to 4. The branched aromatic ionomer has a melt flow index ranging from 1.0 g/10 min. to 13 g/10 min. Optionally the melt flow index ranges from 1.3 g/10 min. to 1.9 g/10 min.
摘要:
The field of this invention relates to supramolecular functional materials, particularly to coordination networks, more particularly to coordination polymers, more particularly to metal based one-dimensional coordination polymers. The metal based one-dimensional coordination polymers comprises a repeat unit [L1-M-L2]n where L1 and L2 are one of a plurality of carboxylate ligands and L1 can be the same as L2, M is a metal, particularly a transition metal, and n is an integer from 1 to infinity. The metal based one-dimensional coordination polymers display one or more physico-chemical properties giving at least one functionality to the supramolecular material. Furthermore, a method of forming the metal based one-dimensional coordination polymers is provided by a chemical reaction between said organic ligand and said metal where said method comprises at least one selectable chemical reaction condition from the group comprising: volume of reaction vessel, material composition of reaction vessel, temperature, pressure, humidity and gas defining an atmosphere inside reaction vessel.
摘要:
The present invention provides dipyrrin substituted porphyrinic macrocycles, intermediates useful for making the same, and methods of making the same. Such compounds may be used for purposes including the making of molecular memory devices, solar cells and light harvesting arrays.
摘要:
A bioadhesive composition is disclosed which includes copolymer particles containing as polymerized units, terminally unsaturated acid-containing oligomers and ethylenically unsaturated nonionic monomers. A method of preparing the bioadhesive composition and a method of using the bioadhesive composition are also disclosed.
摘要:
Described herein are water soluble acrylamide containing polymers having an intrinsic viscosity of at least about 15 dl/g. These polymers are suitable for use in water purification.
摘要:
The present invention belongs to the technical field of marine anti-fouling materials, and discloses a self-polishing zwitterionic anti-fouling resin having a main chain degradability and the preparation therefor and the use thereof. The self-polishing zwitterionic anti-fouling resin is formed by copolymerizing the following three monomers (in the total mass of the monomers): 1% to 80% of an olefinic reactive monomer, 1% to 80% of a cycloketene acetal monomer, and 1% to 80% of a betaine type precursor. The anti-fouling resin has a main chain degradability and a side chain hydrolyzability, and the transition of a coating from being hydrophobic to being hydrophilic is achieved by the hydrolysis of a surface to produce a super-hydrophilic zwitterionic surface, in order to further enhance the anti-fouling ability of the system. The material not only overcomes the disadvantages of poor mechanical properties and poor solubility in an organic solvent of a zwitterionic material, but can also effectively control the long-term stable release of an anti-fouling agent, so as to achieve a synergistic anti-fouling effect of the anti-fouling agent and an anti-protein. The method of the present invention is simple, has a relatively low cost, and is suitable for industrial production. The material is used in the field of marine anti-fouling coatings.
摘要:
This invention provides metal nanoparticles (e.g., aluminum, chromium, iron and magnesium) having an epoxide-based oligomer coating, compositions thereof, method of making the same, and methods of use thereof, including for energy related applications.
摘要:
A process for the preparation of lanthanum containing polyacrylates for optical applications. The process consists in dispersing lanthanum oxide in acrylic acid to form a monomer mixture. An aromatic carboxylic acid is added to the monomer mixture and then a cross linking agent is added thereto. Such a monomer mixture is subjected to the step of polymerization by gamma radiation.