Abstract:
A composition of matter useful in an electrolyte, comprising a polymer including: a repeat unit, the repeat unit including a backbone section; and a side chain attached to the backbone section, wherein the side chain includes a ligand moiety configured to ionically bond to a lithium ion. The polymer has a glass transition temperature (e.g., less than room temperature) wherein the polymer is in a solid state during operation of a lithium ion battery comprising an electrolyte including the polymer.
Abstract:
The invention provides compositions and methods for inducing and enhancing order and nanostructures in organosilicon block copolymers compositions by including certain organic additives in such compositions that include one or more moieties comprising a hydrogen bond acceptor or a hydrogen bond donor. Such block copolymer compositions may be used, for example, as a mask for lithographic patterning as is used, for example, during various stages of semiconductor device fabrication.
Abstract:
The invention provides methods for making and using end-functionalized conjugated polymers. Embodiments of the invention comprise performing a coupling polymerization in the presence of AA monomers, BB monomers and an end capping compound that can react with a monomer and which is selected to include a functional group. The functional end groups can, for example, comprise polymers or small molecules selected for their ability to produce conjugated polymers that self-assemble into thermodynamically ordered structures. In certain embodiments of the invention, nano-scale morphology of such conjugated polymer compositions can be driven by the phase separation of two covalently bound polymer blocks. These features make the use of conjugated polymers an appealing strategy for exerting control over active layer morphology in semiconducting polymer materials systems.
Abstract:
A compound of formula (I): can be used as a monomer for making an underwater adhesive polymer. The compound of formula (I) can be prepared using eugenol as a starting material.
Abstract:
Disclosed herein is an article comprising a substrate; a first region having a first brush polymer chemically bonded to the substrate; where the first brush polymer comprises repeat units of a first ethylenically unsaturated monomer and a second ethylenically unsaturated monomer; where the first ethylenically unsaturated monomer comprises a first electroactive moiety and where the second ethylenically unsaturated monomer comprises a second electroactive moiety that is different from the first electroactive moiety; where at least one of the first electroactive moiety or the second electroactive moiety is an emitter moiety and where the repeat units of the first ethylenically unsaturated monomer are covalently bonded to repeat units of the second ethylenically unsaturated monomer.
Abstract:
Junction-functionalized block copolymers can be used in forming nanostructures. A junction-functionalized block copolymer can include a first polymer block joined to a second polymer block by a junction, where the junction includes one or more electrostatically charged moieties. The block copolymer can include a moiety of formula (I): A-J-B (I) where A is a first polymer block, B is a second polymer block, where the A block and the B block are chemically dissimilar, and J is a junction linking the A block to the B block, and including one or more electrostatically charged moieties.
Abstract:
The invention disclosed herein provides highly efficient methods and materials useful for surface patterning via polymerization reactions. In particular, by using a light-mediated radical polymerization procedure, brush formation from a surface can be regulated spatially by controlling the area of irradiation. In embodiments of the invention, polymer chain length (and/or film thickness) can be effectively controlled by either the amount of time a surface is irradiated with light (temporal control) or by the intensity of light allowed to reach the surface. Such light-mediated control allows artisans to use the disclosed processes to form complex 3-dimensional structures on a variety of surfaces. Moreover, the simplicity of the disclosed polymerization processes allows them to be adapted for use in a wide range of technologies.
Abstract:
Disclosed herein are star-shaped macromolecular structures comprising a hyper-branched silicon containing core grafted with a well-defined and controllable number of alkyl (methyl)acrylate (co)polymer arms. The presence of the robust inorganic core provides additional resilience against mechanical degradation and therefore enhanced additive life time. Control over the additive architecture was complemented by tunability of the length of the grafted polymers by making use of controlled radical based polymerization techniques. The performance of these novel inorganic-organic star-shaped hybrids were compared to traditional fully organic lubricant additives. Detailed analysis revealed the multi-functional character of the hybrids by simultaneously performing as bulk viscosity modifiers, boundary lubricant, and wear protectants while being dispersed in a commercially available base oil for automotive lubrication purposes.
Abstract:
The invention provides compositions and methods for inducing and enhancing order and nanostructures in organosilicon block copolymers compositions by including certain organic additives in such compositions that include one or more moieties comprising a hydrogen bond acceptor or a hydrogen bond donor. Such block copolymer compositions may be used, for example, as a mask for lithographic patterning as is used, for example, during various stages of semiconductor device fabrication.
Abstract:
The instant application teaches methods, compositions and devices useful in forming an active layer in photovoltaic cell devices. In typical embodiments of the invention, the active layer in photovoltaic cell devices is formed by selecting and combining certain constellations of complimentary donor and acceptor compounds.