摘要:
Described herein are methods for electrodepositing a variety of different polymers on metal substrates. The polymers are strongly adhered to the substrates. The substrates produced herein can be used in a number of different applications such as, for example, medical devices and biosensors. For example, the biosensors can be composed of one or more electrodes, where the electrodes have the same or different polymers electrochemically deposited on them. Finally, the methods described herein permit the evaluation of the electrodeposition process as well as monitor the ability of biomolecules to bind to the electrodeposited polymers.
摘要:
Described herein is the synthesis of adhesive complex coacervates and their use thereof. The adhesive complex coacervates are composed of a mixture of one or more polycations and one or more polyanions. The polycations and polyanions in the adhesive complex coacervate are crosslinked with one another by covalent bonds upon curing. The adhesive complex coacervates have several desirable features when compared to conventional bioadhesives, which are effective in water-based applications. The adhesive complex coacervates described herein exhibit good interfacial tension in water when applied to a substrate (i.e., they spread over the interface rather than being beaded up). Additionally, the ability of the complex coacervate to crosslink intermolecularly increases the cohesive strength of the adhesive complex coacervate. They have numerous biological applications as bioadhesives and drug delivery devices and are particularly useful in underwater applications and situations where water is present such as, for example, physiological conditions.
摘要:
Described herein is the synthesis of adhesive complex coacervates and their use thereof. The adhesive complex coacervates are produced by reacting (a) at least one poly anion comprising a plurality of activated ester groups, and (b) at least one polycation comprising a plurality of nucleophilic groups, wherein the nucleophilic groups react with the activated ester groups to produce a new oovalent bond between the polycation and the polyanion. The adhesive complex coacervates described herein have low interfacial tension with water and wettable substrates. When applied to a wet substrate they spread over the interface rather than beading up. The adhesive complex coacervates have numerous biological applications as bioadhesives and drug delivery devices. In particular, the adhesive complex coacervates described herein are particularly useful in wet or underwater applications and situations where water is present such as, for example, physiological conditions.
摘要:
Described herein is the synthesis of adhesive complex coacervates and their use thereof. The adhesive complex coacervates are composed of a mixture of one or more polycations and one or more polyanions. The polycations and polyanions in the adhesive complex coacervate are crosslinked with one another by covalent bonds upon curing. The adhesive complex coacervates have several desirable features when compared to conventional bioadhesives, which are effective in water-based applications. The adhesive complex coacervates described herein exhibit good interfacial tension in water when applied to a substrate (i.e., they spread over the interface rather than being beaded up). Additionally, the ability of the complex coacervate to crosslink intermolecularly increases the cohesive strength of the adhesive complex coacervate. They have numerous biological applications as bioadhesives and drug delivery devices and are particularly useful in underwater applications and situations where water is present such as, for example, physiological conditions.
摘要:
Described herein is the synthesis of adhesive complex coacervates from electrostatically associated block copolymers, wherein the block copolymers comprise alternating polycationic and polyanionic blocks. Methods for making and the using the adhesive complex coacervates are also described herein.
摘要:
A method and system for separating a selected molecule from a heterogeneous mixture of molecules in aqueous solution are described. The method comprises (a) providing a separation device comprising a loading reservoir and a receiving reservoir coupled by a channel bearing immobilized microtubules aligned parallel to the longitudinal axis thereof the channel; (b) placing an aqueous solution containing the heterogeneous mixture of molecules in the loading reservoir; (c) adding a motor-ligand composition and ATP to the aqueous solution, wherein the motor-ligand composition comprises a motor protein for attaching to microtubules and moving therealong in the presence of ATP and the ligand is capable of binding the selected molecule, such that the ligand binds the selected molecule to form a complex and the complex moves along the immobilized microtubules to the receiving reservoir; and (d) removing the selected molecule from the receiving chamber.
摘要:
Described herein is the synthesis of adhesive from simple adhesive coacervates and their uses thereof. The adhesives are produced by (a) preparing a solution comprising (1) a polyelectrolyte, wherein the polyelectrolyte comprises a polyanion or polycation but not a combination thereof, the polyeletrolyte comprises at least one crosslinking group, and (2) a sufficient amount of a complimentary counterion to produce a simple adhesive coacervate; and (b) crosslinking the simple adhesive coacervate to produce the adhesive. The adhesives have numerous medical and non-medical applications.