Extended absorbance solar leaf and methods of making

Patent metadata

Field	Value
Publication number	US-10526205-B2
Application number	US-201715848743-A
Country	US
Kind code	B2
Filing date	Dec 20, 2017
Priority date	Dec 20, 2017
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

A photo-absorbing composition having a structure from the group consisting of

wherein DASM is a small molecule comprising one or more electron donor portions and one or more electron acceptor portions and NG is a nanographene structure, and m, n, and o are integers greater than or equal to 1.

First claim

The invention claimed is:

1. A photo-absorbing composition having a structure from the group consisting of

wherein:
DASM is a small molecule comprising one or more electron donor portions and one or more electron acceptor portions, the electron donor portions selected from the group consisting of

and the electron acceptor portions selected from the group consisting of

wherein:
the starred bonds are sites for bonding to other chemical structures;
R is, independently in each instance, an alkyl, alkoxy, vinyl, aryl group, or fluorinated hydrocarbon group;
Q is, independently in each instance, O, S, or Se;
E is, independently in each instance, Si or Ge;
Z is, independently in each instance, a proton or a fluorine atom;
X is, independently in each instance, C or N; and
m, n, and o are integers greater than or equal to 1; and

NG is a nanographene structure selected from the group consisting of

2. The photo-absorbing composition of claim 1 , wherein at least one DASM is cross-linked.

3. The photo-absorbing composition of claim 1 , wherein at least one DASM has more than one donor portion or more than one acceptor portion.

4. The photo-absorbing composition of claim 1 , wherein at least one DASM ends with a terminal donor portion selected from the group consisting of

wherein the terminal donor portion is bonded to the NG by a thiophene group.

5. The photo-absorbing composition of claim 1 , wherein the photo-absorbing composition is a network of DASM and NG groups.

6. The photo-absorbing composition of claim 1 , wherein the photo-absorbing composition includes more than one NG structure.

7. The photo-absorbing composition of claim 1 , wherein at least one DASM ends with a terminal acceptor portion, and the terminal acceptor portion is bonded to the NG by a thiophene group.

8. A photo-absorbing composition having a structure from the group consisting of

wherein:
DASM is a small molecule comprising one or more electron donor portions and one or more electron acceptor portions, the electron donor portions selected from the group consisting of

and the electron acceptor portions selected from the group consisting of

wherein:
the starred bonds are sites for bonding to other chemical structures;
R is, independently in each instance, an alkyl, alkoxy, vinyl, aryl group, or fluorinated hydrocarbon group;
Q is, independently in each instance, O, S, or Se;
E is, independently in each instance, Si or Ge;
Z is, independently in each instance, a proton or a fluorine atom;
X is, independently in each instance, C or N; and
m, n, and o are integers greater than or equal to 1;

NG is a nanographene structure selected from the group consisting of

 and

wherein at least one DASM is cross-linked.

9. The photo-absorbing composition of claim 8 , wherein at least one DASM has more than one donor portion or more than one acceptor portion.

10. The photo-absorbing composition of claim 8 , wherein at least one DASM ends with a terminal donor portion selected from the group consisting of

wherein the terminal donor portion is bonded to the NG by a thiophene group.

11. The photo-absorbing composition of claim 8 , wherein the photo-absorbing composition is a network of DASM and NG groups.

12. The photo-absorbing composition of claim 8 , wherein the photo-absorbing composition includes more than one NG structure.

13. The photo-absorbing composition of claim 8 , wherein at least one DASM ends with a terminal acceptor portion, and the terminal acceptor portion is bonded to the NG by a thiophene group.

14. A photo-absorbing composition having a structure from the group consisting of

wherein:
DASM is a small molecule comprising one or more electron donor portions and one or more electron acceptor portions, the electron donor portions selected from the group consisting of

and the electron acceptor portions selected from the group consisting of

wherein:
the starred bonds are sites for bonding to other chemical structures;
R is, independently in each instance, an alkyl, alkoxy, vinyl, aryl group, or fluorinated hydrocarbon group;
Q is, independently in each instance, O, S, or Se;
E is, independently in each instance, Si or Ge;
Z is, independently in each instance, a proton or a fluorine atom;
X is, independently in each instance, C or N; and
m, n, and o are integers greater than or equal to 1;

NG is a nanographene structure selected from the group consisting of

at least one DASM is cross-linked; and
wherein at least one DASM ends with a terminal donor portion selected from the group consisting of

wherein the terminal donor portion is bonded to the NG by a thiophene group.

15. The photo-absorbing composition of claim 14 , wherein at least one DASM has more than one donor portion or more than one acceptor portion.

16. The photo-absorbing composition of claim 14 , wherein the photo-absorbing composition is a network of DASM and NG groups.

17. The photo-absorbing composition of claim 14 , wherein the photo-absorbing composition includes more than one NG structure.

18. The photo-absorbing composition of claim 14 , wherein at least one DASM ends with a terminal acceptor portion, and the terminal acceptor portion is bonded to the NG by a thiophene group.

Assignees

• IBM

Inventors

• Kobilka Brandon M
• Wertz Jason T
• Kuczynski Joseph
• King Scott B

Classifications

• H01G9/2059

  comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution · CPC title

• C07D513/04

  Ortho-condensed systems · CPC title

• C07D409/14

  containing three or more hetero rings · CPC title

• C01B32/194 Primary

  After-treatment · CPC title

• C07D257/08

  Six-membered rings · CPC title