US 8,557,987 B2 · Benzodithiophene organic semiconductive material and its preparation method and use

Abstract

The present invention relates to optoelectronic materials field, and it discloses a benzodithiophene organic semiconductive material with the following structural formula (P): wherein, x+y=2; 1≦x<2, 0<y≦1; 1<n≦100; R1, R2 are C1-C20alkyl; R3 is selected from C1-C20alkyl; R4, R5 are hydrogen, phenyl, C1-C20 alkyl or phenyl substituted by C1-C20 alkoxy. The present invention is also provided with preparation method and use of the benzodithiophene organic semiconductive material. The benzodithiophene containing bisphenyl siloles unit has good dissolution property, high carrier mobility, strong absorbance, wide optical absorption range, and improved utilization of sunlight, and its preparation process is simple, with high yield, and easy to operate and control.

Claims10

Dependent claims

A benzodithiophene organic semiconductive material with the following structural formula(P):

wherein, x+y=2;
1≦x<2, 0<y≦1;
1<n≦100;
R1, R2 are C1-C20 alkyl;
R3 is selected from C1-C20 alkyl;
R4, R5 are hydrogen, phenyl, C1-C20 alkyl or phenyl substituted by C1-C20 alkoxy.

3 more elements

A method for preparing a benzodithiophene organic semiconductive material, wherein the method comprises the following steps:

in oxygen free environment, with the presence of the first catalyst and the first organic solvent, conducting Stille coupling reaction by using 2,7-bis(trimethyltin) -benzo[2,1-b :3,4-b′] dithiophene with a structural formula of
2,7-dibromo-benzo[2,1-b:3,4-b′] dithiophene with a structural formula of
and 5,8-di-(5-bromo-2-thienyl)-2,3-disubstituted-quinoxaline with a structural formula of
to obtain a reactant mixture containing the benzodithiophene organic semiconductive material with a structural formula of
wherein, x+y=2;
1≦x<2, 0<y≦1;
1<n ≦100;
R1, R2 are C1-C20 alkyl;
R3 is selected from C1-C20 alkyl;
R4, R5 are hydrogen, phenyl, C1-C20 alkyl or phenyl substituted by C1-C20 alkoxy.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/821,629Filed 10 Sep 2010

Published

US 2013/0165655 A127 Jun 2013

Granted

15 Oct 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification29 codes

C07D 495/04
In which the condensed system contains two hetero rings: ortho-condensed systems
C07D 401/04
Containing two hetero rings: directly linked by a ring-member-to-ring-member bond
C07D 491/04
In which the condensed system contains two hetero rings: ortho-condensed systems
C07D 495/22
Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms: in which the…

Benzodithiophene organic semiconductive material and its preparation method and use

Life of this patent

Benzodithiophene organic semiconductive material and its preparation method and use

Life of this patent

Abstract

Claims10