Induced polymer assemblies
The invention provides compositions and methods for inducing and enhancing order and nanostructures in block copolymers and surfactants by certain nonpolymeric additives, such as nanoparticles having an inorganic core and organic functional groups capable of hydrogen bonding. Various compositions having lattice order and nanostructures have been made from a variety of copolymers or surfactants that are mixed with nonpolymeric additives. Particularly, a variety of nanoparticles with an inorganic core and organic functional groups have been discovered to be effective in introducing or enhancing the degree of orders and nanostructures in diverse block copolymers and surfactants.
1. A composition comprising:
a block copolymer wherein a block comprises a hydrogen bond donor or a hydrogen bond acceptor; and
a pre-formed non-polymeric additive comprising an inorganic core and one or more organic functional groups that comprise a hydrogen bond acceptor or a hydrogen bond donor,
wherein the pre-formed non-polymeric additive and the copolymer are associated by hydrogen bonds formed therebetween such that the resulting copolymer-additive composite exhibits a more ordered nanostructure than in the absence of the pre-formed non-polymeric additive,
wherein the copolymer is a tri-block copolymer comprising a poly(propylene oxide) block and a poly(ethylene oxide) block, and
wherein the pre-formed non-polymeric additive comprises an amino, phenol or carboxylic acid group.
2. The composition of claim 1 , wherein the pre-formed non-polymer additive comprises a nanoparticle capable of hydrogen-bonding.
3. The composition of claim 1 , wherein the pre-formed non-polymer additive comprises a fullerene functionalized with organic groups capable of hydrogen bonding.
4. The composition of claim 1 , wherein the pre-formed non-polymer additive comprises a poly(oligosilsesquioxane) functionalized with organic groups capable of hydrogen bonding.
5. The composition of claim 1 , wherein the pre-formed non-polymeric additive comprises two carboxylic acid groups.
6. An ordered copolymer blend composition with periodic nanostructures, the copolymer blend being obtained in bulk quantity from a composition comprising a block copolymer and a pre-formed non-polymeric additive, wherein the pre-formed non-polymeric additive comprising an inorganic core with a plurality of hydrogen bonding sites thereon capable of forming hydrogen bonding with the block copolymer,
wherein the copolymer is a tri-block copolymer comprising a poly(propylene oxide) block and a poly(ethylene oxide) block, and
wherein the pre-formed non-polymeric additive comprises an amino, phenol or carboxylic acid group.
7. The composition of claim 6 , wherein the pre-formed non-polymeric additive comprises a nanoparticle capable of hydrogen-bonding.
8. The composition of claim 6 , wherein the pre-formed non-polymeric additive comprises a fullerene functionalized with organic groups capable of hydrogen bonding.
9. A composition comprising:
a block copolymer wherein a block comprises a hydrogen bond donor or a hydrogen bond acceptor; and
a fullerene compound or derivative functionalized with one or more hydrogen bond donor or acceptor groups,
wherein the fullerene compound and the block copolymer are associated by hydrogen bonds formed therebetween so as to result in an ordered nanostructure,
wherein the copolymer is a tri-block copolymer comprising a poly(propylene oxide) block and a poly(ethylene oxide) block.
10. The composition of claim 9 wherein the fullerene compound comprises an amino group, a phenol group, or a carboxylic acid group.