Compositions for preparing graphene and methods for preparing graphene using the same

1. A composition for preparing a graphene comprising:

a nitrogen-containing organic compound represented by the following Formula 2;

an oxidizer; and

an acid:

wherein,

X 21 is N (nitrogen atom) or CR 21 , X 22 is N or CR 22 , X 23 is N or CR 23 , X 24 is N or CR 24 , X 25 is N or CR 25 , X 26 is N or CR 26 , X 27 is N or CR 27 , and X 28 is N or CR 28 ;

at least three of groups among X 21 to X 28 are selected as N; and

R 21 to R 28 are each independently selected from hydrogen, a substituted or non-substituted C 1 -C 60 alkyl, a substituted or non-substituted C 3 -C 10 cycloalkyl, a substituted or non-substituted C 6 -C 60 aryl, and a substituted or non-substituted C 2 -C 60 heteroaryl.

2. The composition for preparing a graphene of claim 1 , wherein the nitrogen-containing organic compound represented by Formula 2 is represented by the following Formula 2A:

wherein in Formula 2A,

R 21 to R 24 and R 27 are each independently selected from hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, n-pentyl, cyclopentyl, cyclohexyl, phenyl, naphthyl, and pyridinyl; and

methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, n-pentyl, cyclopentyl, cyclohexyl, phenyl, naphthyl, and pyridinyl which are substituted by at least one selected from the group consisting of deuterium, halogen atom, cyano, nitro, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, phenyl, naphthyl, and pyridinyl.

3. The composition for preparing a graphene of claim 1 , wherein the nitrogen-containing organic compound represented by Formula 2 is 1,2,4-benzotriazine.

4. The composition for preparing a graphene of claim 1 , wherein the composition for preparing a graphene further comprises copper (I) ion or copper (II) ion.

5. The composition for preparing a graphene of claim 1 , wherein the composition for preparing a graphene comprises about 0.2% by weight to about 3% by weight of the nitrogen-containing organic compound represented by Formula 2, about 1% by weight to about 5% by weight of the oxidizer, about 2% by weight to about 10% by weight of the acid, and a balance of a solvent.

6. The composition for preparing a graphene of claim 4 , wherein the composition for preparing graphene comprises about 0.2% by weight to about 3% by weight of the nitrogen-containing organic compound, about 1% by weight to about 5% by weight of the oxidizer, about 2% by weight to about 10% by weight of the acid, about 0.1% by weight to about 1.0% by weight of the copper (I) ion or copper (II) ion, and a balance of a solvent.

7. A method for preparing a graphene comprising:

doping a graphene with a composition for preparing a graphene to obtain a doped graphene, the composition for preparing a graphene comprising a nitrogen-containing organic compound represented by the following Formula 2; an oxidizer; and an acid,

wherein,

X 21 is N (nitrogen atom) or CR 21 , X 22 is N or CR 22 , X 23 is N or CR 23 , X 24 is N or CR 24 , X 25 is N or CR 25 , X 26 is N or CR 26 , X 27 is N or CR 27 , and X 28 is N or CR 28 ;

at least three of groups among X 21 to X 28 are selected as N; and

R 21 to R 28 are each independently selected from hydrogen, a substituted or non-substituted C 1 -C 60 alkyl, a substituted or non-substituted C 3 -C 10 cycloalkyl, a substituted or non-substituted C 6 -C 60 aryl, and a substituted or non-substituted C 2 -C 60 heteroaryl.

8. The method for preparing a graphene of claim 7 , wherein the composition for preparing a graphene further comprises copper (I) ion or copper (II) ion.

9. A method for preparing a graphene comprising:

forming a graphene on at least one side of a metal catalyst; and

removing the metal catalyst and doping the graphene at the same time by using a composition for preparing a graphene so as to obtain a doped graphene, the composition for preparing a graphene comprising a nitrogen-containing organic compound represented by the following Formula 2, an oxidizer, and an acid,

wherein,

X 21 is N (nitrogen atom) or CR 21 , X 22 is N or CR 22 , X 23 is N or CR 23 , X 24 is N or CR 24 , X 25 is N or CR 25 , X 26 is N or CR 26 , X 27 is N or CR 27 , and X 28 is N or CR 28 ;

at least three of groups among X 21 to X 28 are selected as N; and

R 21 to R 28 are each independently selected from hydrogen, a substituted or non-substituted C 1 -C 60 alkyl, a substituted or non-substituted C 3 -C 10 cycloalkyl, a substituted or non-substituted C 6 -C 60 aryl, and a substituted or non-substituted C 2 -C 60 heteroaryl.

10. The method for preparing graphene of claim 9 , wherein the composition for preparing a graphene further comprises copper (I) ion or copper (II) ion.