摘要:
Two-dimensional nanomaterials are produced in a process comprising the steps of (a) providing (a1) a mixture comprising graphene oxide particles, water and at least one cationic surfactant and/or nonionic surfactant or (a2) a mixture comprising graphene particles, at least one solvent useful for solution exfoliation of graphite and at least one cationic surfactant and/or nonionic surfactant, (b) adding at least one sol precursor compound to the mixture from step (a), (c) reacting the mixture from step (b) in a sol/gel process to form gel from the at least one sol precursor compound on the graphene oxide particles or, respectively, the graphene particles, (d) removing the at least one surfactant, and (e) optionally heating the gel-coated graphene oxide particles for at least 1 min to at least 500° C. under inert gas atmosphere to reduce the graphene oxide to graphene.
摘要:
The present invention relates to polymers comprising repeating unit(s) of the formula (I), and their use in electronic devices. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high charge carrier mobilities and high temperature stability of the emission color are observed, if the polymers according to the invention are used in polymer light emitting diodes (PLEDs).
摘要:
The invention relates to a process for coating nanoparticles with graphene, comprising the steps of (a) providing a suspension comprising a suspension medium and nanoparticles with positive surface charge, (b) adding graphene oxide particles to the suspension from step (a), the graphene oxide particles accumulating on the nanoparticles, and (c) converting the graphene oxide particles accumulated on the nanoparticles to graphene, to graphene-coated nanoparticles comprising at least one metal, a semimetal, a metal compound and/or a semimetal compound, and to the use of these graphene-coated nanoparticles in electrochemical cells and supercapacitors, and to supercapacitors and electrochemical cells comprising these nanoparticles.
摘要:
The invention relates to a process for coating nanoparticles with graphene, comprising the steps of (a) providing a suspension comprising a suspension medium and nanoparticles with positive surface charge, (b) adding graphene oxide particles to the suspension from step (a), the graphene oxide particles accumulating on the nanoparticles, and (c) converting the graphene oxide particles accumulated on the nanoparticles to graphene, to graphene-coated nanoparticles comprising at least one metal, a semimetal, a metal compound and/or a semimetal compound, and to the use of these graphene-coated nanoparticles in electrochemical cells and supercapacitors, and to supercapacitors and electrochemical cells comprising these nanoparticles.
摘要:
The present invention provides a micelle comprising an amphiphilic block copolymer, said amphiphilic block copolymer consisting of (a) a hydrophobic polymer attached to the 5′ end of a first nucleic acid molecule, wherein said first nucleic acid molecule is hybridized with a second nucleic acid molecule, wherein a targeting unit capable of selectively binding to a specific cell type and/or tissue is attached to the 5′ end of said second nucleic acid molecule; and/or (b) a hydrophobic polymer attached to the 3′ end of a first nucleic acid molecule, wherein said first nucleic acid molecule is hybridized with a second nucleic acid molecule, wherein a targeting unit capable of selectively binding to a specific cell type and/or tissue is attached to the 3′ end of said second nucleic acid molecule.
摘要:
The present invention provides a compound of formula The compound of formula (1) is suitable for use as semiconducting material, in particular in electronic devices.
摘要:
Two-dimensional nanomaterials are produced in a process comprising the steps of (a) providing (a1) a mixture comprising graphene oxide particles, water and at least one cationic surfactant and/or nonionic surfactant or (a2) a mixture comprising graphene particles, at least one solvent useful for solution exfoliation of graphite and at least one cationic surfactant and/or nonionic surfactant, (b) adding at least one sol precursor compound to the mixture from step (a), (c) reacting the mixture from step (b) in a sol/gel process to form gel from the at least one sol precursor compound on the graphene oxide particles or, respectively, the graphene particles, (d) removing the at least one surfactant, and (e) optionally heating the gel-coated graphene oxide particles for at least 1 min to at least 500° C. under inert gas atmosphere to reduce the graphene oxide to graphene.
摘要:
The present invention relates to polymers comprising repeating unit(s) of the formula (I), and their use in electronic devices. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high charge carrier mobilities and high temperature stability of the emission color are observed, if the polymers according to the invention are used in polymer light emitting diodes (PLEDs).
摘要:
A supported catalyst for olefin polymerization comprises A) as support material, a copolymer comprising the monomer units I, II and III, where the monomer units I have the formula (I) and the monomer units II have the formula (II), where the variables have the following meanings: R1 is hydrogen, C1-C4-alkyl or phenyl, R2 is substituted or unsubstituted aryl or branched or unbranched alkyl or alkenyl, A1 is a direct chemical bond or a substituted or unsubstituted phenylene group, R3 are identical or different and are each hydrogen, C1-C10-alkyl or substituted or unsubstituted phenyl, p is an integer from 0 to 8, and R4 to R7 are hydrogen, C1-C10-alkyl or substituted or unsubstituted phenyl, and the monomer units III have polar groups, and B) at least one metallocene complex and C) at least one compound capable of forming metallocenium ions. A process for preparing such supported catalysts, copolymers suitable as support material and a process for the polymerization of olefins in the presence of a catalyst according to the present invention are also provided.