Patent
US 8,999,529NITROGEN-CONTAINING GRAPHENE STRUCTURE AND PHOSPHOR DISPERSION
Hiroyuki Tetsuka
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 8,999,529Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 B is a schematic view of a zigzag edge-face structure; F IG. 2 is a mass spectrum of the nitrogen-containing 7 graphene structure synthesized in Example …
FIG. 2 that a nitrogen-containing graphene structure having an average mass of 1483 m/z has been formed. The spectrum is a regularly repeated pattern of the m …
FIG. 3A is an XPS (X-ray photoelectron spectroscopy) spectrum showing a binding state of an oxygen-containing functional group (C 1 s) of each of the …
FIG. 4 is a fluorescence spectrum of the nitrogen-containing graphene structure synthesized in
FIG. 5 that a nitrogen-containing graphene structure having an average mass of 1512 m/z has been formed. The spectrum shows a r egularly repeated pattern of …
FIG. 6B are XPS spectra showing binding states of the oxygen-containing functional group (C 1 s) and the nitrogen-containing functional group (N 1 s spectrum) …
FIG. 7 is a fluorescence spectrum of the nitrogen-containing graphene structure obtained in Example 2. The structure obtained in Example 2 has a peak position …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 9 that a nitrogen-containing graphe n e structure having an average thickness of about 2 nm and an average size of about 10 nm has been formed. 41
FIG. 10 is a fluorescence spectrum of the nitrogen-containing graphene structure obtained in Exampl e 11. The graphene structure obtained in Example 11 had a …
FIG. 11 that a nitrogen-containing graphene structure having an average thickness of about 10 nm and an average size of about 200 nm has been formed.
FIG. 12 is a fluorescence spectrum of the nitrogen-containing graphene structure synthesized in Example 12. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A nitrogen-containing graphene structure, comprising: a graphene structure having a sheet portion comprised of a monolayer or multilayer graphene nanosheet; and nitrogen introduced into the graphene structure, wherein: the sheet portion comprises, at an edge portion thereof, an armchair edge-face portion and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith, a nd the nitrogen comprises nitrogen introduced into the graphene structure in the form of one or more amino groups and amide groups a bound to one or more carbon atoms selected from: (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion including the carbon atom on the side shared with the terminal six-membered ring, a nd the nitro g en-containin g grap hene structure has an avera ge mass of 1000 m/z to 50000 m/z, the nitrogen-containing graphene structure has a nitrogen content of 5 wt% to 50 wt%. and the nitrogen-containing grap hene structure emits lig ht and has an emission efficiency of 15% or gr eater. 2-5.
The nitrogen-containing graphene structure according to claim 1, not containing, in the structure thereof, an oxygen-containing functional group having an oxygen atom directly bound to the carbon atom constituting the sheet portion or the terminal six-membered ring.
The nitrogen-containing graphene structure according to claim 1, obtained by dispersing graphite oxide and/or graphene oxide in an aqueous solution having a nitrogen-containing compound dissolved therein and then heating the resulting aqueous solution at 60 " C or greater.
A phosphor dispersion obtained by dispersing the nitrogen-containing graphene structure according to claim 1 in a solvent. 9-15.
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Materials described outside the worked examples.
nitrogen-containing graphene structure
graphite oxide/graphene oxide
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3A is an XPS (X-ray photoelectron spectroscopy) spectrum showing a binding state of an oxygen-containing functional group (C 1 s) of each of the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
emission efficiency (claimed range) | ≥ 15 % | nitrogen-containing graphene structure |
average mass (m/z) range | 1000–50000 m/z |
Table 1
SVG
obtained in Example 1 had emission efficiency of 24 %, much higher than that of Non-patent Document 1 (refer to Table 1).
p. 15
Table 2
43 SVG
Example 11 had emission efficiency of 24 %, which was much higher than that of Non-patent Document 1 (refer to Table 2).
p. 18
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,999,529Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 B is a schematic view of a zigzag edge-face structure; F IG. 2 is a mass spectrum of the nitrogen-containing 7 graphene structure synthesized in Example …
FIG. 2 that a nitrogen-containing graphene structure having an average mass of 1483 m/z has been formed. The spectrum is a regularly repeated pattern of the m …
FIG. 3A is an XPS (X-ray photoelectron spectroscopy) spectrum showing a binding state of an oxygen-containing functional group (C 1 s) of each of the …
FIG. 4 is a fluorescence spectrum of the nitrogen-containing graphene structure synthesized in
FIG. 5 that a nitrogen-containing graphene structure having an average mass of 1512 m/z has been formed. The spectrum shows a r egularly repeated pattern of …
FIG. 6B are XPS spectra showing binding states of the oxygen-containing functional group (C 1 s) and the nitrogen-containing functional group (N 1 s spectrum) …
FIG. 7 is a fluorescence spectrum of the nitrogen-containing graphene structure obtained in Example 2. The structure obtained in Example 2 has a peak position …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 9 that a nitrogen-containing graphe n e structure having an average thickness of about 2 nm and an average size of about 10 nm has been formed. 41
FIG. 10 is a fluorescence spectrum of the nitrogen-containing graphene structure obtained in Exampl e 11. The graphene structure obtained in Example 11 had a …
FIG. 11 that a nitrogen-containing graphene structure having an average thickness of about 10 nm and an average size of about 200 nm has been formed.
FIG. 12 is a fluorescence spectrum of the nitrogen-containing graphene structure synthesized in Example 12. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A nitrogen-containing graphene structure, comprising: a graphene structure having a sheet portion comprised of a monolayer or multilayer graphene nanosheet; and nitrogen introduced into the graphene structure, wherein: the sheet portion comprises, at an edge portion thereof, an armchair edge-face portion and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith, a nd the nitrogen comprises nitrogen introduced into the graphene structure in the form of one or more amino groups and amide groups a bound to one or more carbon atoms selected from: (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion including the carbon atom on the side shared with the terminal six-membered ring, a nd the nitro g en-containin g grap hene structure has an avera ge mass of 1000 m/z to 50000 m/z, the nitrogen-containing graphene structure has a nitrogen content of 5 wt% to 50 wt%. and the nitrogen-containing grap hene structure emits lig ht and has an emission efficiency of 15% or gr eater. 2-5.
The nitrogen-containing graphene structure according to claim 1, not containing, in the structure thereof, an oxygen-containing functional group having an oxygen atom directly bound to the carbon atom constituting the sheet portion or the terminal six-membered ring.
The nitrogen-containing graphene structure according to claim 1, obtained by dispersing graphite oxide and/or graphene oxide in an aqueous solution having a nitrogen-containing compound dissolved therein and then heating the resulting aqueous solution at 60 " C or greater.
A phosphor dispersion obtained by dispersing the nitrogen-containing graphene structure according to claim 1 in a solvent. 9-15.
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
nitrogen-containing graphene structure
graphite oxide/graphene oxide
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3A is an XPS (X-ray photoelectron spectroscopy) spectrum showing a binding state of an oxygen-containing functional group (C 1 s) of each of the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
emission efficiency (claimed range) | ≥ 15 % | nitrogen-containing graphene structure |
average mass (m/z) range | 1000–50000 m/z |
Table 1
SVG
obtained in Example 1 had emission efficiency of 24 %, much higher than that of Non-patent Document 1 (refer to Table 1).
p. 15
Table 2
43 SVG
Example 11 had emission efficiency of 24 %, which was much higher than that of Non-patent Document 1 (refer to Table 2).
p. 18
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,999,529Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 B is a schematic view of a zigzag edge-face structure; F IG. 2 is a mass spectrum of the nitrogen-containing 7 graphene structure synthesized in Example …
FIG. 2 that a nitrogen-containing graphene structure having an average mass of 1483 m/z has been formed. The spectrum is a regularly repeated pattern of the m …
FIG. 3A is an XPS (X-ray photoelectron spectroscopy) spectrum showing a binding state of an oxygen-containing functional group (C 1 s) of each of the …
FIG. 4 is a fluorescence spectrum of the nitrogen-containing graphene structure synthesized in
FIG. 5 that a nitrogen-containing graphene structure having an average mass of 1512 m/z has been formed. The spectrum shows a r egularly repeated pattern of …
FIG. 6B are XPS spectra showing binding states of the oxygen-containing functional group (C 1 s) and the nitrogen-containing functional group (N 1 s spectrum) …
FIG. 7 is a fluorescence spectrum of the nitrogen-containing graphene structure obtained in Example 2. The structure obtained in Example 2 has a peak position …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 9 that a nitrogen-containing graphe n e structure having an average thickness of about 2 nm and an average size of about 10 nm has been formed. 41
FIG. 10 is a fluorescence spectrum of the nitrogen-containing graphene structure obtained in Exampl e 11. The graphene structure obtained in Example 11 had a …
FIG. 11 that a nitrogen-containing graphene structure having an average thickness of about 10 nm and an average size of about 200 nm has been formed.
FIG. 12 is a fluorescence spectrum of the nitrogen-containing graphene structure synthesized in Example 12. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A nitrogen-containing graphene structure, comprising: a graphene structure having a sheet portion comprised of a monolayer or multilayer graphene nanosheet; and nitrogen introduced into the graphene structure, wherein: the sheet portion comprises, at an edge portion thereof, an armchair edge-face portion and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith, a nd the nitrogen comprises nitrogen introduced into the graphene structure in the form of one or more amino groups and amide groups a bound to one or more carbon atoms selected from: (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion including the carbon atom on the side shared with the terminal six-membered ring, a nd the nitro g en-containin g grap hene structure has an avera ge mass of 1000 m/z to 50000 m/z, the nitrogen-containing graphene structure has a nitrogen content of 5 wt% to 50 wt%. and the nitrogen-containing grap hene structure emits lig ht and has an emission efficiency of 15% or gr eater. 2-5.
The nitrogen-containing graphene structure according to claim 1, not containing, in the structure thereof, an oxygen-containing functional group having an oxygen atom directly bound to the carbon atom constituting the sheet portion or the terminal six-membered ring.
The nitrogen-containing graphene structure according to claim 1, obtained by dispersing graphite oxide and/or graphene oxide in an aqueous solution having a nitrogen-containing compound dissolved therein and then heating the resulting aqueous solution at 60 " C or greater.
A phosphor dispersion obtained by dispersing the nitrogen-containing graphene structure according to claim 1 in a solvent. 9-15.
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
nitrogen-containing graphene structure
graphite oxide/graphene oxide
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3A is an XPS (X-ray photoelectron spectroscopy) spectrum showing a binding state of an oxygen-containing functional group (C 1 s) of each of the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
emission efficiency (claimed range) | ≥ 15 % | nitrogen-containing graphene structure |
average mass (m/z) range | 1000–50000 m/z |
Table 1
SVG
obtained in Example 1 had emission efficiency of 24 %, much higher than that of Non-patent Document 1 (refer to Table 1).
p. 15
Table 2
43 SVG
Example 11 had emission efficiency of 24 %, which was much higher than that of Non-patent Document 1 (refer to Table 2).
p. 18
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,999,529Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 B is a schematic view of a zigzag edge-face structure; F IG. 2 is a mass spectrum of the nitrogen-containing 7 graphene structure synthesized in Example …
FIG. 2 that a nitrogen-containing graphene structure having an average mass of 1483 m/z has been formed. The spectrum is a regularly repeated pattern of the m …
FIG. 3A is an XPS (X-ray photoelectron spectroscopy) spectrum showing a binding state of an oxygen-containing functional group (C 1 s) of each of the …
FIG. 4 is a fluorescence spectrum of the nitrogen-containing graphene structure synthesized in
FIG. 5 that a nitrogen-containing graphene structure having an average mass of 1512 m/z has been formed. The spectrum shows a r egularly repeated pattern of …
FIG. 6B are XPS spectra showing binding states of the oxygen-containing functional group (C 1 s) and the nitrogen-containing functional group (N 1 s spectrum) …
FIG. 7 is a fluorescence spectrum of the nitrogen-containing graphene structure obtained in Example 2. The structure obtained in Example 2 has a peak position …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 9 that a nitrogen-containing graphe n e structure having an average thickness of about 2 nm and an average size of about 10 nm has been formed. 41
FIG. 10 is a fluorescence spectrum of the nitrogen-containing graphene structure obtained in Exampl e 11. The graphene structure obtained in Example 11 had a …
FIG. 11 that a nitrogen-containing graphene structure having an average thickness of about 10 nm and an average size of about 200 nm has been formed.
FIG. 12 is a fluorescence spectrum of the nitrogen-containing graphene structure synthesized in Example 12. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A nitrogen-containing graphene structure, comprising: a graphene structure having a sheet portion comprised of a monolayer or multilayer graphene nanosheet; and nitrogen introduced into the graphene structure, wherein: the sheet portion comprises, at an edge portion thereof, an armchair edge-face portion and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith, a nd the nitrogen comprises nitrogen introduced into the graphene structure in the form of one or more amino groups and amide groups a bound to one or more carbon atoms selected from: (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion including the carbon atom on the side shared with the terminal six-membered ring, a nd the nitro g en-containin g grap hene structure has an avera ge mass of 1000 m/z to 50000 m/z, the nitrogen-containing graphene structure has a nitrogen content of 5 wt% to 50 wt%. and the nitrogen-containing grap hene structure emits lig ht and has an emission efficiency of 15% or gr eater. 2-5.
The nitrogen-containing graphene structure according to claim 1, not containing, in the structure thereof, an oxygen-containing functional group having an oxygen atom directly bound to the carbon atom constituting the sheet portion or the terminal six-membered ring.
The nitrogen-containing graphene structure according to claim 1, obtained by dispersing graphite oxide and/or graphene oxide in an aqueous solution having a nitrogen-containing compound dissolved therein and then heating the resulting aqueous solution at 60 " C or greater.
A phosphor dispersion obtained by dispersing the nitrogen-containing graphene structure according to claim 1 in a solvent. 9-15.
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
nitrogen-containing graphene structure
graphite oxide/graphene oxide
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3A is an XPS (X-ray photoelectron spectroscopy) spectrum showing a binding state of an oxygen-containing functional group (C 1 s) of each of the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
emission efficiency (claimed range) | ≥ 15 % | nitrogen-containing graphene structure |
average mass (m/z) range | 1000–50000 m/z |
Table 1
SVG
obtained in Example 1 had emission efficiency of 24 %, much higher than that of Non-patent Document 1 (refer to Table 1).
p. 15
Table 2
43 SVG
Example 11 had emission efficiency of 24 %, which was much higher than that of Non-patent Document 1 (refer to Table 2).
p. 18
Related documents with shared materials, methods, properties, or citations.
nitrogen-containing compound (aqueous solution)
solvent
FIG. 6B are XPS spectra showing binding states of the oxygen-containing functional group (C 1 s) and the nitrogen-containing functional group (N 1 s spectrum) …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 9 that a nitrogen-containing graphe n e structure having an average thickness of about 2 nm and an average size of about 10 nm has been formed. 41
FIG. 11 that a nitrogen-containing graphene structure having an average thickness of about 10 nm and an average size of about 200 nm has been formed.
nitrogen content (claimed range) | 5–50 wt% | nitrogen-containing graphene structure |
Duration | 1–20 hours | — |
nitrogen-containing compound (aqueous solution)
solvent
FIG. 6B are XPS spectra showing binding states of the oxygen-containing functional group (C 1 s) and the nitrogen-containing functional group (N 1 s spectrum) …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 9 that a nitrogen-containing graphe n e structure having an average thickness of about 2 nm and an average size of about 10 nm has been formed. 41
FIG. 11 that a nitrogen-containing graphene structure having an average thickness of about 10 nm and an average size of about 200 nm has been formed.
nitrogen content (claimed range) | 5–50 wt% | nitrogen-containing graphene structure |
Duration | 1–20 hours | — |
nitrogen-containing compound (aqueous solution)
solvent
FIG. 6B are XPS spectra showing binding states of the oxygen-containing functional group (C 1 s) and the nitrogen-containing functional group (N 1 s spectrum) …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 9 that a nitrogen-containing graphe n e structure having an average thickness of about 2 nm and an average size of about 10 nm has been formed. 41
FIG. 11 that a nitrogen-containing graphene structure having an average thickness of about 10 nm and an average size of about 200 nm has been formed.
nitrogen content (claimed range) | 5–50 wt% | nitrogen-containing graphene structure |
Duration | 1–20 hours | — |
nitrogen-containing compound (aqueous solution)
solvent
FIG. 6B are XPS spectra showing binding states of the oxygen-containing functional group (C 1 s) and the nitrogen-containing functional group (N 1 s spectrum) …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 8 is an infrared absorption spectrum showing a vibrational state of the functional group contained in the nitrogen-containing graphene structure obtained …
FIG. 9 that a nitrogen-containing graphe n e structure having an average thickness of about 2 nm and an average size of about 10 nm has been formed. 41
FIG. 11 that a nitrogen-containing graphene structure having an average thickness of about 10 nm and an average size of about 200 nm has been formed.
nitrogen content (claimed range) | 5–50 wt% | nitrogen-containing graphene structure |
Duration | 1–20 hours | — |