05-12-2013 дата публикации
Номер: US20130324666A1
Принадлежит:
The invention provides a class of copolymers having useful properties, including brush block copolymers, wedge-type block copolymers and hybrid wedge and polymer block copolymers. In an embodiment, for example, block copolymers of the invention incorporate chemically different blocks comprising polymer size chain groups and/or wedge groups that significantly inhibit chain entanglement, thereby enhancing molecular self-assembly processes for generating a range of supramolecular structures, such as periodic nanostructures and microstructures. The present invention also provides useful methods of making and using copolymers, including block copolymers. 1. A copolymer comprising:at least 10 first repeating units; wherein each of said first repeating units of said copolymer comprises a first polymer backbone group covalently linked to a first wedge group or a first polymer side chain group; andat least 10 second repeating units; wherein each of said second repeating units of said copolymer block comprises a second polymer backbone group covalently linked to a second wedge group or a second polymer side chain group that is different than said first wedge group or said first polymer side chain group;wherein said first and second repeating units are directly or indirectly covalently linked along a backbone of said copolymer; {'br': None, 'i': 'R', 'sup': 'x', '∝MW\u2003\u2003(E1).'}, 'wherein a size (R) of the copolymer increases substantially linearly with molecular weight (MW) of said copolymer pursuant to the expression (E1) wherein 0.85
Подробнее
