Methods For Purification Of Trimetallic Nitride Endohedral Metallofullerenes And Related Fullerene Derivatives
First Claim
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1. A method for increasing the purity of trimetallic nitride endohedral metallofullerenes, comprising the steps of:
- contacting reaction soot containing trimetallic nitride endohedral metallofullerenes with a carbon nanomaterial reactive agent;
binding empty cage fullerenes to the carbon nanomaterial reactive agent; and
removing unbound trimetallic nitride endohedral metallofullerenes from the carbon nanomaterial reactive agent.
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Abstract
Methods for separating and purifying carbon nanomaterials such as trimetallic nitride endohedral metallofullerenes are described. In certain embodiments, carbon nanomaterials are contacted with a carbon nanomaterial reactive agent. The reactive agent binds empty cage fullerenes, nanotubes, and endohedral metallofullerenes without appreciably binding trimetallic nitride endohedral metallofullerenes. According to some embodiments, purified forms of trimetallic nitride endohedral metallofullerenes may be prepared.
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Citations
19 Claims
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1. A method for increasing the purity of trimetallic nitride endohedral metallofullerenes, comprising the steps of:
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contacting reaction soot containing trimetallic nitride endohedral metallofullerenes with a carbon nanomaterial reactive agent; binding empty cage fullerenes to the carbon nanomaterial reactive agent; and removing unbound trimetallic nitride endohedral metallofullerenes from the carbon nanomaterial reactive agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for removing trimetallic nitride endohedral metallofullerenes from soot, comprising the steps of:
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contacting soot containing trimetallic nitride endohedral metallofullerenes with a carbon nanomaterial reactive agent, the carbon nanomaterial reactive agent comprising a carbon nanomaterial reactive moiety bound to a support, wherein the carbon nanomaterial reactive moiety is a cyclopentadienyl moiety; binding empty cage fullerenes and metal encapsulated fullerenes to the carbon nanomaterial reactive agent; washing the carbon nanomaterial reactive agent with a solvent to remove unbound trimetallic nitride endohedral metallofullerenes; and collecting the solvent containing trimetallic nitride endohedral metallofullerenes. - View Dependent Claims (10, 11, 12)
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13. A method for removing empty cage fullerenes from trimetallic nitride endohedral metallofullerenes, comprising the steps of:
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contacting reaction soot containing trimetallic nitride endohedral metallofullerenes and empty cage fullerenes with a carbon nanomaterial reactive agent; binding empty cage fullerenes to the carbon nanomaterial reactive agent; removing unbound trimetallic nitride endohedral metallofullerenes from the carbon nanomaterial reactive agent; after removing the trimetallic nitride endohedral metallofullerenes from the carbon nanomaterial reactive agent, adding a fullerene release agent to the carbon nanomaterial reactive agent, wherein the fullerene release agent displaces the empty cage fullerenes from the carbon nanomaterial reactive agent; and washing the displaced empty cage fullerenes from the carbon nanomaterial reactive agent. - View Dependent Claims (14)
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15. A method of separating one or more fullerenes, fullerene derivatives, and nanotubes from a soot containing a plurality of fullerenes, fullerene derivatives, and nanotubes, comprising the steps of:
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adding a reaction soot containing a plurality of fullerenes, fullerene derivatives, and nanotubes to a reaction column containing a support material having a carbon nanomaterial reactive moiety chemically bonded thereto, said carbon nanomaterial reactive agent having a different rates of reaction for one or more fullerenes, fullerene derivatives or nanotubes of interest relative to other fullerenes, fullerene derivatives or nanotubes; exposing said reaction soot to said carbon nanomaterial reactive agent for a time and at a temperature sufficient to achieve covalent bonding between said fullerene reactive agent and said other fullerenes, fullerene derivatives or nanotubes, without covalently bonding said one or more fullerenes, fullerene derivative, and nanotubes of interest; and recovering said one or more unbonded fullerenes, fullerene derivatives, and nanotubes of interest from said reaction column. - View Dependent Claims (16, 17, 18, 19)
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Specification