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.
Claims116
A compound having a repeating unit of the formula:
- 22
- wherein A is selected from the group consisting of,
- 23
- wherein B is selected from the following:
- 24
- wherein X is a dendritic substituent or a methyl group;
- wherein D is selected from:
- 25
- wherein R comprises a dendritic substituent, an alkoxy substituent or a an alkyl substituent, provided that at least one R group is a dendritic substituent;
- and
- n is an integer from about 5 to about 25.
A compound having a repeating unit of the formula:
- 29
- where R comprises a dendritic substituent or a methyl group, provided that at least one R group is a dendritic substituent.
A compound having a repeating unit of the formula:
- 33
- where R comprises at least one substituent selected from the group
- 34
- consisting of R1, R2, R3 and methyl, wherein R1 is a substituent of the formula:
- and R2 is a substituent of the formula:
- 35
- and R3 is a substituent of the formula:
- 36
- where n is an integer from about 5 to about 25, provided that at least one R group is selected from R1, R2 or R3.
A compound having a repeating unit of the formula:
- 37
- where R comprises a substituent of the formula:
- 38
- and where n is an integer from about 5 to about 25.
A compound having a repeating unit of the formula:
- 39
- where R comprises a substituent of the formula:
- 40
- and where n is an integer from about 5 to about 25.
A compound having a repeating unit of the formula:
- 41
- where R comprises a substituent of the formula:
- 42
- and where n is an integer from about 5 to about 25.
The compound according to claim 539, wherein the compound has a molecular weight of from about 20,000 to about 60,000 Daltons.
A method for forming a compound having a repeating unit of the formula:
- 43
- said method comprising:
- reacting a monomer having the formula
- 44
- 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
- 45
- a substituent of the formula:
- and R2 is a substituent of the formula:
- 46
- and R3 is a substituent of the formula:
- 47
- 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:
- 48
- said method comprising:
- reacting a monomer having the formula
- 49
- 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 W is a substituent of the formula:
- 50
- and R2 is a substituent of the formula:
- 51
- and R3 is a substituent of the formula:
- 52
- where n is an integer from about 5 to about 25 and R4 is independently selected from a C2-C18 alkyl group.
A light emitting device including a conjugated polymer having a repeating unit of the formula:
- 53
- where R comprises a substituent selected from the group consisting of R1, R2, R3 and a methyl group, provided that at least one R group is R1, R2 or R3, wherein R1 is a substituent of the formula:
- 54
- R2 is a substituent of the formula:
- 55
- R3 is a substituent of the formula:
- 56
- and 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.