US4719286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Class of conductive polymers
Assignee: Northrop Grumman Corp
•
Filing: 1985-03-14
•
Granted: 1988-01-12
•
Expires: 2005-03-14
Abstract
Abstract A conductive polymer is set forth which comprises a plurality of interconnected units. Each unit comprises a generally centrally positioned moiety and a ligand or set of ligands having a total dentation capability of three or more non-coplanar dentations and being positioned about the centrally positioned moiety, at least two of the dentations being parts of conjugated systems. The units are interconnected by having at least one ligand in common and the conjugation of the conjugated systems extend from one centrally positioned moiety to an adjacent centrally positioned moiety. Through proper selection of ligands and centrally positioned moieties, conductive polymers of various desired characters including intrinsically conductive polymers, p-type semiconductor polymers, n-type semiconductor polymers, p-type metal conducting polymers and a n-type metal conducting polymers can be constructed.
Inventors
- 👤 Sheldon L. Matlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:29
CPC Classifications
C; C08; C08G; C08G79/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
161 words
A conductive polymer comprising a plurality of interconnected units positioned in a three-dimensional array, each of which units comprises: a generally centrally positioned moiety, said moiety being a metal atom or ion, a phosporo halide, or a sulfuro halide and having valence level d-orbitals or f-orbitals; and a ligand or set of ligands having a total dentation capability of three or more non-coplanar dentations and being positioned about said centrally positioned moiety, at least two of said dentations being parts of conjugated systems, said ligand or set of ligands being dentated to said centrally positioned moiety via π-bonding of C, N or O atoms of said ligand or set of ligands, said C, N or O atoms having available p-orbitals for π-bonding; and wherein said units are interconnected by having at least one ligand in common and wherein the conjugation of said conjugated systems is via π-bonding and extends three-dimensionally from one centrally positioned moiety to an adjacent centrally positioned moiety.
Claim 2
Dependent Claim
161 words
A conductive polymer comprising a plurality of interconnected units positioned in a three-dimensional array, each of which units comprises: a generally centrally positioned moiety, said moiety being a metal atom or ion, a phosporo halide, or a sulfuro halide and having valence level d-orbitals or f-orbitals; and a ligand or set of ligands having a total dentation capability of three or more non-coplanar dentations and being positioned about said centrally positioned moiety, at least two of said dentations being parts of conjugated systems, said ligand or set of ligands being dentated to said centrally positioned moiety via π-bonding of C, N or O atoms of said ligand or set of ligands, said C, N or O atoms having available p-orbitals for π-bonding; and wherein said units are interconnected by having at least one ligand in common and wherein the conjugation of said conjugated systems is via π-bonding and extends three-dimensionally from one centrally positioned moiety to an adjacent centrally positioned moiety.
Claim 3
Dependent Claim
51 words
A conductive polymer as set forth in claim 1, wherein a band gap, defined as the energy difference between the valence band and the conduction band, is sufficiently small so that large numbers of valence band electrons are in the conduction band at ambient temperature whereby the polymer is intrinsically conducting.
Claim 4
Dependent Claim
18 words
A conductive polymer as set forth in claim 1, wherein said moiety is a metal atom or ion.
Claim 5
Dependent Claim
44 words
A conductive polymer as set forth in claim 3, wherein the centrally positioned metal atom or ion has an available d- or f-orbital which is empty and which lies slightly above a top of the valence band whereby the polymer exhibits p-type semiconductor behavior.
Claim 6
Dependent Claim
44 words
A conductive polymer as set forth in claim 3, wherein the centrally positioned metal atom or ion has an available d- or f-orbital which is occupied and which lies slightly below a bottom of the conduction band whereby the polymer exhibit n-type semiconductor behavior.
Claim 7
Dependent Claim
41 words
A conductive polymer as set forth in claim 3, wherein the centrally positioned metal atom or ion has an available d- or f-orbital which is empty and which lies in the valence band whereby the polymer exhibits p-type metal conductor behavior.
Claim 8
Dependent Claim
41 words
A conductive polymer as set forth in claim 3, wherein the centrally positioned metal atom or ion has an available d- or f-orbital which is occupied and which lies in the conduction band whereby the polymer exhibits n-type metal conductor behavior.
Claim 9
Dependent Claim
62 words
A conductive polymer as set forth in claim 1, wherein said two dentations which are parts of said conjugated systems each include an atomic orbital which is a part of a respective one of the conjugated systems of said two dentations, said atomic orbitals overlapping sufficiently so that the overlap integral of said atomic orbitals is greater than or equal to 0.1.
References Cited (Backward Citations)
US3245965A
Cited
US3023164A
Cited
US3267115A
Cited
US3060189A
Cited
US3218205A
Cited
US3293075A
Cited
US3615558A
Cited
US3408310A
Cited
US3543394A
Cited
US3903107A
Cited
US3896184A
Cited
US4104466A
Cited
US4204216A
Cited
US4175981A
Cited
US4269738A
Cited
US4359411A
Cited
US4376659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |