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n-Type thiophene semiconductors

  • US 6,991,749 B2
  • Filed: 06/30/2003
  • Issued: 01/31/2006
  • Est. Priority Date: 07/24/2000
  • Status: Expired due to Fees
First Claim
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1. An n-type polythiophene composition having the structural formula embedded imagewherein R1, R2 and R3 are selected from the substituent group consisting of fluoroalkyl moieties, CnH2n+1 and where n is about 1–

  • 12, H, F and (CH2)aX and where a is about 1–

    12 and X is selected from the group consisting of amino, hydroxy and carboxylic acid functionalities;

    x is an integer selected from the group of integers consisting of 1 and integers greater than 1; and

    y is an integer selected from the group consisting of 0 and integers greater than 0, providing said composition comprises at least one perfluorophenyl component; and

    z is an integer selected from the group of integers consisting of 0 and integers greater than 0.

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