US6025462A
Expired / Lapsed
US
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Reflective and conductive star polymers
Assignee: EIC Laboratories Inc
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Filing: 1998-03-03
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Granted: 2000-02-15
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Expires: 2018-03-03
Abstract
Abstract Conductive polymers having a star structure comprising a central core with multiple attachment sites and conjugated charge transporting arms radiating therefrom. The cores are derived from hyperbranched polymers, dendrimers, or other molecules with a multiplicity of attachment sites. The arms are derived from conjugated oligomers and polymers such as polythiophene, polyaniline or polyphenylene. The subject polymers allow assembly of the macromolecules in all three dimensions in the solid state. A ramification of the compact assembly is the realization of highly reflective, smooth coatings simply applied from solution. A preferred embodiment having a 1,3,5 hyperbranched polyphenylene core and poly (3-hexylthiophene) arms provides lustrous reflective gold coatings.
Inventors
- 👤 Fei Wang
- 👤 R. David Rauh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:01
CPC Classifications
C; C08; C08L; C08L65/00; C08L65/02; C08G; C08G61/00; C08G61/02; C08G61/12; C08G61/122; C08G61/123; C08G61/126; C08G83/00; C08G83/002; C08G83/005; H; H10; H10K; H10K85/00; H10K85/791; C08G2261/00; C08G2261/30; C08G2261/31; C08G2261/312; H10K50/00; H10K50/10; H10K50/11; H10K85/10; H10K85/111; H10K85/113
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
61 words
An electrically conductive polymer comprising a) a hyperbranched polymer core structure providing a multiplicity of attachment points and b) nonbranching conjugated backbone chains radiating from the attachment points in three dimensions said polymers exhibiting improved properties chosen from the properties group of lower melting temperature, higher electrical conductivity and lower surface roughness compared to polymers comprising the conjugated backbone chains alone.
Claim 2
Dependent Claim
61 words
An electrically conductive polymer comprising a) a hyperbranched polymer core structure providing a multiplicity of attachment points and b) nonbranching conjugated backbone chains radiating from the attachment points in three dimensions said polymers exhibiting improved properties chosen from the properties group of lower melting temperature, higher electrical conductivity and lower surface roughness compared to polymers comprising the conjugated backbone chains alone.
Claim 3
Dependent Claim
39 words
The polymers of claim 1 wherein the core structure providing a multiplicity of branching points is a 1,3,5 hyperbranched polyphenylene and said conjugated backbone chain is chosen from the group of conjugated chains consisting of polythiophene and oligothiophene chains.
Claim 4
Dependent Claim
17 words
The polymers of claim 2 wherein the thiophene chains are substituted in the 3-position with alkyl groups.
Claim 5
Dependent Claim
11 words
The polymers of claim 3 wherein the alkyl groups are hexyl.
Claim 6
Dependent Claim
12 words
The polymers of claim 1 wherein the conjugated structural units are regioregular.
Claim 7
Dependent Claim
21 words
A coating made of the electrically conductive polymer of claim 1 with a specular reflectance at its wavelength maximum exceeding 0.1.
Claim 8
Dependent Claim
9 words
The coating of claim 6 prepared by solution casting.
Claim 9
Dependent Claim
25 words
The electrically conductive polymers of claim 1 doped by treatment with an oxidizing or reducing agent and further incorporating a source of charge compensating ions.
Claim 10
Dependent Claim
18 words
The electrically conductive polymers of claim 1 doped electrochemically and further incorporating a source of charge compensating ions.
Claim 11
Dependent Claim
17 words
The polymers of claim 1 wherein the conjugated backbone chains are made from polyaniline or polyaniline derivatives.
Claim 12
Dependent Claim
11 words
The polymers of claim 10 doped by treatment with an acid.
Claim 13
Dependent Claim
17 words
The polymers of claim 11 wherein the conjugated backbone chains are made from polyphenylene or substituted polyphenylene.
Claim 14
Dependent Claim
10 words
The polymers of claim 12 wherein the substituents are hexyloxy.
Claim 15
Dependent Claim
60 words
An electrically conductive polymer comprising a) a dendrimer core structure providing a multiplicity of attachment points and b) nonbranching conjugated backbone chains radiating from the attachment points in three dimensions said polymers exhibiting improved properties chosen from the properties group of lower melting temperature, higher electrical conductivity and lower surface roughness compared to polymers comprising the conjugated backbone chains alone.
Claim 16
Dependent Claim
60 words
An electrically conductive polymer comprising a) a dendrimer core structure providing a multiplicity of attachment points and b) nonbranching conjugated backbone chains radiating from the attachment points in three dimensions said polymers exhibiting improved properties chosen from the properties group of lower melting temperature, higher electrical conductivity and lower surface roughness compared to polymers comprising the conjugated backbone chains alone.
Claim 17
Dependent Claim
60 words
An electrically conductive polymer comprising a) a fullerene core structure providing a multiplicity of attachment points and b) nonbranching conjugated backbone chains radiating from the attachment points in three dimensions said polymers exhibiting improved properties chosen from the properties group of lower melting temperature, higher electrical conductivity and lower surface roughness compared to polymers comprising the conjugated backbone chains alone.
Claim 18
Dependent Claim
60 words
An electrically conductive polymer comprising a) a fullerene core structure providing a multiplicity of attachment points and b) nonbranching conjugated backbone chains radiating from the attachment points in three dimensions said polymers exhibiting improved properties chosen from the properties group of lower melting temperature, higher electrical conductivity and lower surface roughness compared to polymers comprising the conjugated backbone chains alone.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-14 | 2003-08-16 | 2004-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-14 | 2007-08-16 | 2008-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-14 | 2011-08-16 | 2012-02-15 | $7700.00 | Window Closed / Lapsed |