Two-dimensional polymeric fullerene and preparation method thereof

1 . A two-dimensional polymeric fullerene, in which adjacent fullerene molecules are connected with each other through covalent bonds, showing a regular topological structure of repeated arrangement;

wherein, each fullerene cluster is connected with four fullerene clusters, and is connected with two of the fullerene clusters through one C—C single bond respectively, while is connected with the other two of the fullerene clusters through two C—C single bonds respectively, and the four carbon atoms in the two C—C single bonds form a quaternary ring structure.

2 . The two-dimensional polymeric fullerene according to claim 1 , wherein the two-dimensional polymeric fullerene has a thin layer structure with a thickness less than 100 nm.

3 . The two-dimensional polymeric fullerene according to claim 2 , wherein the two-dimensional polymeric fullerene has a thickness of 0.5-3 nm.

4 . The two-dimensional polymeric fullerene according to claim 1 , wherein the two-dimensional polymeric fullerene has stable chemical properties and does not decompose under ambient pressure.

5 . The two-dimensional polymeric fullerene according to claim 1 , wherein the two-dimensional polymeric fullerene is two-dimensional polymeric C 60 .

6 . A preparation method for two-dimensional polymeric fullerene, comprising the following steps:

providing metal intercalated polymeric fullerene; and

replacing metal ions in the metal intercalated polymeric fullerene with quaternary ammonium salts;

wherein in the two-dimensional polymeric fullerene, adjacent fullerene molecules are connected with each other through covalent bond, showing a regular topological structure of repeated arrangement.

7 . The preparation method according to claim 6 , wherein in the metal intercalated polymeric fullerene, the metal is one of magnesium, lithium, potassium, and sodium.

8 . The preparation method according to claim 7 , wherein the structural formula of the quaternary ammonium salts is as follows:

wherein R 1 , R 2 , R 3 and R 4 are independently selected from alkyl groups containing 1-8 carbon atoms, with X − being one of salicylate ions, fluoride ions, bromine ions, 8-hydroxyquinoline anions and other anions with coordination ability with metal ions, and the metal ions are one of magnesium ions, lithium ions, potassium ions, and sodium ions.

9 . A polymeric fullerene crystal, in which adjacent fullerene molecules are connected by covalent bonds, showing a regular topological structure of a repeating arrangement of carbon clusters, without metal intercalated,

wherein, each fullerene cluster is connected with four fullerene clusters, and is connected with two of the fullerene clusters through one C—C single bond respectively, while is connected with the other two of the fullerene clusters through two C—C single bonds respectively, and the four carbon atoms in the two C—C single bonds form a quaternary ring structure.

10 . The polymeric fullerene crystal according to claim 9 , wherein the polymeric fullerene has stable chemical properties and does not decompose under ambient pressure.

11 . An electronic device comprising a two-dimensional polymeric fullerene;

wherein in the two-dimensional polymeric fullerene, adjacent fullerene molecules are connected with each other through covalent bond, showing a regular topological structure of repeated arrangement, and

wherein, each fullerene cluster is connected with four fullerene clusters, and is connected with two of the fullerene clusters through one C—C single bond respectively, while is connected with the other two of the fullerene clusters through two C—C single bonds respectively, and the four carbon atoms in the two C—C single bonds form a quaternary ring structure.