Polarizable photoactive and electroactive polymers and light emitting devices
AssigneeLucent Technologies Inc.
InventorsZhenan Bao, Karl R. Amundson, Xiaochen Linda Chen
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Abstract
The invention relates to poly(phenylene vinylene) polymers substituted with dendritic sidechains to enhance main-chain separation in the solid state. The polymers are synthesized by the Heck polymerization and have a weight-average molecular weight of 20,000 to 60,000 Daltons. The polymers are self-ordering in the solid state and have thermotropic liquid crystalline phases. The polymers show enhanced photoconductivity, better charge transport capability and improved polarized light emission.
Claims37
A method for forming a compound having a repeating unit of the formula:
- said method comprising:
- reacting a monomer having the formula:
- with a divinyl benzene to form said compound,
- where R is independently selected from of the group consisting of R1, R2, R3 and methyl, provided that at least one R group is R1, R2 or R3, wherein R1 is a substituent of the formula:
- and R2 is a substituent of the formula:
- and R3 is a substituent of the formula:
- and where n is an integer from about 5 to about 25.
A method for forming a compound having a repeating unit of the formula:
- said method comprising:
- reacting a monomer having the formula:
- with a divinyl benzene to form said compound,
- where R is independently selected from of the group consisting of R1, R2, R3 and methyl, provided that at least one R group is R1, R2 or R3, wherein R1 is a substituent of the formula:
- and R2 is a substituent of the formula:
- and R3 is a substituent of the formula:
- where n is an integer from about 5 to about 25 and R4 is independently selected from a C2-C18 alkyl group.
Dependencies are inferred from the claim text.