US4111850A
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Organic photoconductors and methods
Assignee: TE Connectivity Corp
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Filing: 1977-02-16
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Granted: 1978-09-05
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Expires: 1997-02-16
Abstract
Abstract Carbazole-based molecular photoconductive charge-transfer complexes are synthesized which are easily applied to electrode substrates. The carbazole-based complexes comprise 3-substituted carbazoles complexed with an electron acceptor molecule such as 2,4,7-trinitrofluorenone. In addition, the photoconductive response of polyvinylcarbazole-trinitrofluorenone complexes is improved by substitution of certain functional groups on the aromatic portions of the polymer. Also provided are methods for constructing photoconductive elements on thin semitransparent flexible substrates for use in many areas such as light sensitive switching functions, the photoconductors being applied from solution or suspension in a fast drying liquid onto an electrode assembly attached to a flexible plastic substrate.
Inventors
- 👤 William David Kwalwasser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:30
CPC Classifications
H; H10; H10K; H10K85/00; H10K85/10; H10K85/141; H10K85/146; H10K85/60; H10K85/649; H10K85/657; H10K85/6572; H10K30/00; H10K30/451; H10K30/50
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR4## wherein R is ethyl and X is nitro.
Claim 2
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR4## wherein R is ethyl and X is nitro.
Claim 3
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR5## wherein R is ethyl and X is acetylamino.
Claim 4
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR5## wherein R is ethyl and X is acetylamino.
Claim 5
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR6## wherein R is ethyl and X is dibenzylamino.
Claim 6
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR6## wherein R is ethyl and X is dibenzylamino.
Claim 7
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR7## wherein R is ethyl and X is iodo.
Claim 8
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR7## wherein R is ethyl and X is iodo.
Claim 9
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR8## wherein R is ethyl and X is diphenylamino.
Claim 10
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR8## wherein R is ethyl and X is diphenylamino.
Claim 11
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR9## wherein R is ethyl and X is cyano.
Claim 12
Dependent Claim
38 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR9## wherein R is ethyl and X is cyano.
Claim 13
Dependent Claim
43 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR10## wherein X 1 is hydrogen, Y 1 is iodo and n is 3.
Claim 14
Dependent Claim
43 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR10## wherein X 1 is hydrogen, Y 1 is iodo and n is 3.
Claim 15
Dependent Claim
42 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR11## where X 1 and Y 1 are methyl, and n is 3.
Claim 16
Dependent Claim
42 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR11## where X 1 and Y 1 are methyl, and n is 3.
Claim 17
Dependent Claim
43 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR12## where X 1 is hydrogen, Y 1 is methoxy, and n is 3.
Claim 18
Dependent Claim
43 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR12## where X 1 is hydrogen, Y 1 is methoxy, and n is 3.
Claim 19
Dependent Claim
74 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR13## wherein X 2 is selected from the group consisting of bromo, iodo, nitro, amino, N-acetylamino, N,N-dibenzylamino, cyano, diphenylamino, formyl, acetyl, methyl, and methoxy, X 3 is hydrogen, or bromo when X 2 is bromo, and m is an integer indicating the polymer chain length.
Claim 20
Dependent Claim
74 words
A photoconductive, charge-transfer material comprising a complex of an electron acceptor molecule selected from the group consisting of 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone, with a carbazole compound of the following formula: ##STR13## wherein X 2 is selected from the group consisting of bromo, iodo, nitro, amino, N-acetylamino, N,N-dibenzylamino, cyano, diphenylamino, formyl, acetyl, methyl, and methoxy, X 3 is hydrogen, or bromo when X 2 is bromo, and m is an integer indicating the polymer chain length.
Claim 21
Dependent Claim
15 words
A charge-transfer material according to claim 10 where X 2 and X 3 are bromo.
Claim 22
Dependent Claim
17 words
A charge-transfer material according to claim 10 where X 2 is iodo and X 3 is hydrogen.
Claim 23
Dependent Claim
17 words
A charge-transfer material according to claim 10 where X 2 is nitro and X 3 is hydrogen.
Claim 24
Dependent Claim
17 words
A charge-transfer material according to claim 10 where X 2 is acetylamino and X 3 is hydrogen.
Claim 25
Dependent Claim
3 words
The compound, 3-Dibenzylamino-N-ethylcarbazole.
Claim 26
Dependent Claim
3 words
The compound, 3-Dibenzylamino-N-ethylcarbazole.
Claim 27
Dependent Claim
3 words
The compound, 3-Diphenylamino-N-ethylcarbazole.
Claim 28
Dependent Claim
3 words
The compound, 3-Diphenylamino-N-ethylcarbazole.
Claim 29
Dependent Claim
3 words
The compound, Bis-1,3-(N-3'-iodocarbazolyl)propane.
Claim 30
Dependent Claim
3 words
The compound, Bis-1,3-(N-3'-iodocarbazolyl)propane.
Claim 31
Dependent Claim
3 words
The compound, Bis-1,3-(N-3'-methoxy-carbazolyl)propane.
Claim 32
Dependent Claim
3 words
The compound, Bis-1,3-(N-3'-methoxy-carbazolyl)propane.
Claim 33
Dependent Claim
3 words
The compound, Bis-1,3(N-3',6'-dibromocarbazolyl)propane.
Claim 34
Dependent Claim
3 words
The compound, Bis-1,3(N-3',6'-dibromocarbazolyl)propane.
References Cited (Backward Citations)
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US3287119A
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US3849130A
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US3811879A
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US3871880A
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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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |