Nova Patents
CA2950331C

Compositions and applications of three component benzo[1,2-b:4,5-b] dithiophene-thienothiophene randomly substituted polymers for organic solar cells

Abstract

A polymer having two different sets of repeat units consisting essentially of: (Formula 1) and Additionally, in the polymer R1 can be selected from the group consisting of alkyl group, alkoxy group, aryl groups and combinations thereof. In the polymer, n and m can be greater than 1. In the polymer, x and y can be different from each other and independently selected from the group consisting of: an alkoxy group, a substituted alkoxy group, an aryl group, an alkyl group, a substituted alkyl group, (Formula 2), where y = 1-3, (Formula 3) where y = 0-12, (Formula 4) where R2 is selected from the group consisting of H, alkyl groups, and aryl groups, (Formula 5) where R3 is selected from the group consisting of H, alkyl groups, and aryl groups, (Formula 6) where R4 and R5 are independently selected from the group consisting of H, alkyl groups, and aryl groups, --NR6R7 where R6 and R7 are independently selected from the group consisting of H, alkyl groups, and aryl groups.

CA2950331C, drawing sheet 1
Sheet 1 of 22

Term

8.7 yearsleft in the term

Expires 28 May 2035.

  1. Priority
  2. Filed
  3. Granted
  4. Today
  5. Expires

10 claims: 2 independent, 8 dependent

  1. 1
    CLAIMS:1. A polymer having two different sets of repeat units consisting essentially of: and wherein the two sets of repeat units are a benzo[l,2-b:4,5-b']dithiophene with a 2ethylhexyl substituted 3-fluorothieno[3,4-b]thiophene and a benzofl,2-b:4,5-b 'Jdithiophene with a propyl substituted 3-fluorothieno[3,4-b]thiophene, wherein Ri is selected from the group consisting of alkyl group, alkoxy group, aryl group, O —^CF.sjCFj A where zi = 1-3, Z2 where Z2 = 0-12, ' °~ R 2 wherein R2 is selected from the group consisting of H, alkyl groups, and aryl groups, where R3 O .A is selected from the group consisting of H, alkyl groups, and aryl groups, NR 4 R 5 where R4 and R 3 are independently selected from the group consisting H, alkyl groups, and aryl groups, and ” “ N R 6 R 7 w | icrc R6 and ^7 are independently selected from the group consisting of H, alkyl groups, and aryl groups;n and m are greater than 1 ;CA 2950331 2017-08-03 X is selected from the group consisting of a 2-ethylhexyl, a 2-ethylhexyl substituted alkoxy group, 2-ethylhexyl substituted aryl group, and ;and Y is selected from the group consisting of a propyl, a propyl substituted alkoxy group, propyl substituted aryl group, o c 3 h ? , and
  2. 10
    11. A polymer having two different sets of repeat units consisting essentially of:and CA 2950331 2017-08-03 wherein the two sets of repeat units are a benzo[l,2-b:4,5-b']dithiophene with 2-ethyl-l(3-fluorothieno[3,4-b]thiophen-2-yl)hexan-l-one and a benzo[l,2-b:4,5-b']dithiophene with l-(3-fluorothieno[3,4-b]thiophen-2-yl)butan-l-one, wherein Ri is selected from the group consisting of alkyl group, alkoxy group, aryl group, O 'όΑΆ -(cF^CFj Ά Z1 where zj = 1-3, Z2 where z2 = 0-12, υ K 2 wherein R2 is A selected from the group consisting of H, alkyl groups, and aryl groups, R s where R3 0 is selected from the group consisting of H, alkyl groups, and aryl groups, ' NR 4 R 6 where R4 and R 5 are independently selected from the group consisting H, alkyl groups, and aryl groups, and ~ NR s R 7 where R6 and R7 are independently selected from the group consisting of H, alkyl groups, and aryl groups;n and m are greater than 1 ;CA 2950331 2017-08-03
Independent claims2