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    High functionalization density graphene
    31.
    发明授权
    High functionalization density graphene 有权

    公开(公告)号：US11505467B2

    公开(公告)日：2022-11-22

    申请号：US16182371

    申请日：2018-11-06

    Applicant: Massachusetts Institute of Technology

    Inventor： Intak Jeon ,  Timothy M. Swager

    IPC: C01B32/225 ,  C01B32/21 ,  C01B32/194 ,  G01N27/327 ,  G01N33/53 ,  B82Y40/00 ,  B82Y30/00

    Abstract: Carbon-based materials, and associated methods and articles, are generally provided. In some embodiments, a carbon-based material comprises a carbon-based portion and a functional group bonded to the carbon-based portion. The functional group may be capable of forming a reversible covalent bond with a species. Carbon may make up greater than or equal to 30 wt % of the carbon-based portion. The carbon-based portion may comprise graphene, and a ratio of a total number of functional groups in a plurality of functional groups bonded to the graphene to a total number of carbon atoms in the plurality of carbon atoms of the graphene may be greater than or equal to 1:50. The carbon-based portion may comprise graphene, and greater than or equal to 70% of the graphene sheets may be spaced apart from their nearest neighbors by a distance of greater than or equal to 10 Å. A method may comprise applying a voltage to a carbon-based material. The voltage may be applied in the presence of a combination of solvents comprising a dissolved species. The combination of solvents may comprise a solvent stable at voltages of greater than or equal to −3.15 V and less than or equal to −2.2 V and/or may comprise a solvent with a surface tension within 25% of a surface tension of the carbon-based material. The voltage may be a decreasing voltage that decreases at a rate of greater than or equal to 2 μV/s and less than or equal to 40 μV/s and has a value of greater than or equal to −2.2 V and less than or equal to −3.15 V at at least one point in time.

    SYSTEMS INCLUDING JANUS DROPLETS
    37.
    发明申请
    SYSTEMS INCLUDING JANUS DROPLETS 审中-公开

    公开(公告)号：US20190170736A1

    公开(公告)日：2019-06-06

    申请号：US16201961

    申请日：2018-11-27

    Applicant: Massachusetts Institute of Technology

    Inventor： Timothy M. Swager ,  Qifan Zhang

    IPC: G01N33/543 ,  G01N21/59 ,  C12Q1/6834 ,  G01N21/77

    Abstract: Embodiments described herein may be useful in the detection of analytes. The systems and methods may allow for a relatively simple and rapid way for detecting analytes such as chemical and/or biological analytes and may be useful in numerous applications including sensing, food manufacturing, medical diagnostics, performance materials, dynamic lenses, water monitoring, environmental monitoring, detection of proteins, detection of DNA, among other applications. For example, the systems and methods described herein may be used for determining the presence of a contaminant such as bacteria (e.g., detecting pathogenic bacteria in food and water samples which helps to prevent widespread infection, illness, and even death). Advantageously, the systems and methods described herein may not have the drawbacks in current detection technologies including, for example, relatively high costs, long enrichment steps and analysis times, and/or the need for extensive user training. Another advantageous feature provided by the systems and methods described herein includes fabrication in a relatively large scale. In some embodiments, the systems and methods may be used in conjunction with a detector including handheld detectors incorporated with, for example, smartphones (e.g., for the on-site detection of analytes such as pathogenic bacteria).

    Mechanochemical synthesis of iptycenes
    38.
    发明授权
    Mechanochemical synthesis of iptycenes 有权

    公开(公告)号：US10160715B2

    公开(公告)日：2018-12-25

    申请号：US15249061

    申请日：2016-08-26

    Applicant: Massachusetts Institute of Technology

    Inventor： Timothy M. Swager ,  Yanchuan Zhao ,  Silvia Veleirinho de Oliveira Rocha

    IPC: C07C67/293 ,  C07C69/604 ,  B01D53/02 ,  B01J20/26

    Abstract: Methods for mechanochemically synthesizing compositions comprising bridged bicyclic-based compounds such as iptycene-based compounds are generally provided. In some cases, two or more polycyclic aromatic hydrocarbons may be mechanochemically reacted such that the product comprises the bridged bicyclic-based compound. In some embodiments, the product (e.g., the bridged bicyclic compound) may comprise two or more [2.2.2] bicyclic cores. In certain embodiments, the mechanochemical reactions described herein may produce higher order bridged bicyclic-based compounds such as oligoiptcyenes or poly-iptycenes. In certain embodiments, the bridged bicyclic based compound comprises a molecular cage.

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